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Trailing-Edge - PDP-10 Archives - BB-Y393R-SM_1990 - monitor-sources/comnd.mac
There are 52 other files named comnd.mac in the archive. Click here to see a list.
; *** Edit 7515 to COMND.MAC by RASPUZZI on 1-Sep-87 (TCO 7.1047)
; Fix problem with ^Vs in edit 7413. Make it only for .CMUSR and .CMDIR
; *** Edit 7413 to COMND.MAC by RASPUZZI on 24-Jan-87, for SPR #18873
; Don't allow ^V's in usernames or directory names. Return an error if some
; bozo tries to use it.
; *** Edit 7405 to COMND.MAC by RASPUZZI on 23-Dec-86
; A ^J got turned into a J and therefore, 2 lines were appended. The second
; line was not assembled because it followed a semi-colon 
; *** Edit 7404 to COMND.MAC by RASPUZZI on 16-Dec-86, for SPR #21491
; Prevent ILMNRFs by making GETFUN validate the function it is getting from the
; user's address space
; *** Edit 7394 to COMND.MAC by RASPUZZI on 18-Nov-86
; Add ERJMPs after monitor calls to prevent MONNEJ BUGCHKs
; *** Edit 7325 to COMND.MAC by RASPUZZI on 24-Jun-86, for SPR #18086
; Fix problems with help in .CMTAD function 
; *** Edit 7309 to COMND.MAC by RASPUZZI on 2-Jun-86
; Now install edit 7299 correctly. Sigh. 
; *** Edit 7306 to COMND.MAC by RASPUZZI on 30-May-86
; Remove edit 7299 until it works right 
; *** Edit 7305 to COMND.MAC by RASPUZZI on 30-May-86
; Fix edit 7299 so that we don't eat ESC 
; *** Edit 7301 to COMND.MAC by RASPUZZI on 27-May-86
; Fix typo in edit 7299. Argh! 
; *** Edit 7299 to COMND.MAC by RASPUZZI on 23-May-86, for SPR #17812
; Check for EOL after .CMNUM or .CMNUX and set CM%EOC if there is an EOL 
; *** Edit 7292 to COMND.MAC by RASPUZZI on 7-May-86, for SPR #20832
; Fix ^V, ^W, ^U, ^H weirdness by reapplying edit 1989 
; *** Edit 7260 to COMND.MAC by MRASPUZZI on 11-Mar-86, for SPR #20948
; Return correct error when a null string is passed to function .CMDEV with
; flags CM%NSF and CM%PO set 
; *** Edit 7248 to COMND.MAC by MRASPUZZI on 20-Feb-86, for SPR #19532
; Fix problem with .CMNUX not parsing a '-' correctly in an atom by using the
; 5.1 COMND module slightly modified
;Edit 3150 to COMND.MAC by PRATT on Wed 22-Aug-84, for SPR #15611
;		Make filespec defaults work properly
;Edit 3149 to COMND.MAC by PRATT on Mon 20-Aug-84, for SPR #17658
;		Make .CMQST handle defaults properly for crlf
;Edit 3148 to COMND.MAC by PRATT on Thu 16-Aug-84, for SPR #18336
;		Make .CMTOK handle defaults correctly for crlf
;Edit 3067 to COMND.MAC by PRATT on Thu 5-Jan-84
;		Update comments for edits 3043 and 3045
;Edit 3045 to COMND.MAC by PRATT on Thu 10-Nov-83
;		Fix "section greater than 37" errors for .CMNUX
;Edit 3043 to COMND.MAC by PRATT on Thu 10-Nov-83
;		Add no comment bit for Datatrieve
;Edit 3033 to COMND.MAC by PRATT on Tue 25-Oct-83, for SPR #16487
;		Make ^F work for .CMUQS if it is a break character
;Edit 3022 to COMND.MAC by PRATT on Fri 30-Sep-83, for SPR #13260
;		Fix XCMUQS to understand CMQUES
;Edit 3009 to COMND.MAC by TSANG on Wed 7-Sep-83, for SPR #19417
;		Release extraneous JFNs which exist if an error occurs in  an 
;;		indirect file command.
;Edit 2995 to COMND.MAC by PRATT on Tue 26-Jul-83, for SPR #17334
;		Let user set break mask for switches. Change CFNTAB for .CMSWI
; UPD ID= 232, FARK:<5-1-WORKING-SOURCES.MONITOR>COMND.MAC.5,  18-Nov-82 10:05:28 by DONAHUE
;Edit 2871 - Remove previous edit (most of it)
; UPD ID= 199, FARK:<5-1-WORKING-SOURCES.MONITOR>COMND.MAC.4,   3-Nov-82 16:48:44 by DONAHUE
;Edit 2852 - Add default parsing for CMTOK, also change NPXNMD to NPXNMT
; UPD ID= 47, FARK:<5-WORKING-SOURCES.MONITOR>COMND.MAC.2,  20-May-82 15:54:42 by DONAHUE
;Edit 2620 - Allow ':' within keywords
; UPD ID= 489, SNARK:<5.MONITOR>COMND.MAC.52,  26-Feb-82 11:20:35 by GROUT
;Remove TCO 5.1637
; UPD ID= 459, SNARK:<5.MONITOR>COMND.MAC.51,   3-Feb-82 14:24:23 by GROUT
;TCO 5.1637 - Fix COMND so it doesn't echo CTRL/U and CTRL/H
; UPD ID= 426, SNARK:<5.MONITOR>COMND.MAC.50,  21-Jan-82 10:43:15 by PAETZOLD
;More TCO 5.1687
; UPD ID= 415, SNARK:<5.MONITOR>COMND.MAC.49,  19-Jan-82 08:22:08 by PAETZOLD
;TCO 5.1687 - Fix RDCBP to accept OWGBPs from non-zero section
; UPD ID= 367, SNARK:<5.MONITOR>COMND.MAC.48,  18-Dec-81 16:15:48 by CHALL
;TCO 5.1639 (RETROFIT TCO 6.1036): ADD FDB FLAG CM%NSF (NO SUFFIX NEEDED)
;  TEACH XCMNOD AND XCMDEV TO USE CM%NSF
; UPD ID= 358, SNARK:<5.MONITOR>COMND.MAC.47,  11-Dec-81 15:45:18 by CHALL
;TCO 5.1631 XCMTAD- DON'T COUNT TERMINATOR AS PART OF DATE-TIME
; UPD ID= 281, SNARK:<5.MONITOR>COMND.MAC.46,  21-Oct-81 13:56:21 by GROUT
;TCO 5.1547 - SAVE .CMPTR/.CMCNT FOR .CMINI AFTER INTERRUPT OUT OF COMND
; UPD ID= 246, SNARK:<5.MONITOR>COMND.MAC.45,   6-Oct-81 13:42:43 by MOSER
;TCO 5.1526 MAKE .CMNOI WORK WHEN FIRST IN LIST.
; UPD ID= 156, SNARK:<5.MONITOR>COMND.MAC.44,   9-Sep-81 09:18:52 by CHALL
;TCO 5.1491 XCOM5A- REMOVE TCO 5.1475 UNTIL I GET IT RIGHT (SIGH)
; UPD ID= 136, SNARK:<5.MONITOR>COMND.MAC.43,   1-Sep-81 22:25:25 by DONAHUE
;TCO 5.1484 - Let CTRL/V be seen as a break character
; UPD ID= 120, SNARK:<5.MONITOR>COMND.MAC.40,  25-Aug-81 14:44:44 by CHALL
;TCO 5.1475 XCOM5A- IF THERE'S ONLY ONE KEYWORD (ETC.) OUTPUT IT
; UPD ID= 101, SNARK:<5.MONITOR>COMND.MAC.39,  14-Aug-81 10:28:51 by ZIMA
;TCO 5.1453 - Remove unneeded instructions at RTYP33.
; UPD ID= 53, SNARK:<5.MONITOR>COMND.MAC.38,  20-Jul-81 15:53:52 by MOSER
;TCO 5.1423 LOOK AT TT%LCA AS WELL AS TT%UOC TO DECIDE HOW FAR TO BACK UP.
; UPD ID= 2201, SNARK:<5.MONITOR>COMND.MAC.37,  16-Jun-81 08:22:15 by SCHMITT
;More of TCO 5.1361 - Remove checks for break in default string
; UPD ID= 2193, SNARK:<5.MONITOR>COMND.MAC.36,  12-Jun-81 12:12:13 by SCHMITT
;More of TCO 5.1361 - Make good check for break set supplied at GETBRK
; UPD ID= 2166, SNARK:<5.MONITOR>COMND.MAC.35,  10-Jun-81 15:17:33 by PAETZOLD
;TCO 5.1293 Fix breaks on <CR> for TEXTI
; UPD ID= 2163, SNARK:<5.MONITOR>COMND.MAC.34,  10-Jun-81 09:36:28 by DONAHUE
;TCO 5.1366 - Check if parsing a noise word at NLINE
; UPD ID= 2145, SNARK:<5.MONITOR>COMND.MAC.33,   8-Jun-81 11:52:06 by SCHMITT
;TCO 5.1361 - Check for break characters in default string.
; UPD ID= 2144, SNARK:<5.MONITOR>COMND.MAC.32,   8-Jun-81 10:12:06 by SCHMITT
;TCO 5.1360 - Make .CMCMA terminated with ESC function correctly
; UPD ID= 2114, SNARK:<5.MONITOR>COMND.MAC.31,   1-Jun-81 14:40:58 by SCHMITT
;TCO 5.1357 - in CHKDEF, jump back to XCOMB0 to reset pass 1
; UPD ID= 1940, SNARK:<5.MONITOR>COMND.MAC.30,   5-May-81 16:54:31 by MOSER
;TCO 5.1311 - Make help work as documented if parsing keyword or switch and
; nothing can match.
; UPD ID= 1782, SNARK:<5.MONITOR>COMND.MAC.29,   3-Apr-81 14:03:34 by MURPHY
;Make ^O act like ^R if ever seen in input stream.
; UPD ID= 1742, SNARK:<5.MONITOR>COMND.MAC.28,  19-Mar-81 21:44:18 by MURPHY
;Undo preceding edit.  Put COMNX9 back in.
; UPD ID= 1641, SNARK:<5.MONITOR>COMND.MAC.27,   4-Mar-81 10:38:37 by OSMAN
;tco 6.1004 - Don't fail in .CMINI if end of file encountered in lieu of ^H.
; Note:  As part of this, remove COMNX9 check so that IOX4 is all that need
; be checked for by user's error handler.
; UPD ID= 1532, SNARK:<5.MONITOR>COMND.MAC.26,   7-Feb-81 21:34:22 by GRANT
;REPLACE NTMX4 ERROR CODE WITH COMX21
; UPD ID= 1449, SNARK:<5.MONITOR>COMND.MAC.25,  16-Jan-81 08:50:10 by GRANT
;Initialize T4 at PARNOD
; UPD ID= 1353, SNARK:<5.MONITOR>COMND.MAC.22,  15-Dec-80 14:15:23 by DONAHUE
;TCO 5.1215 - Add routine ECOCHK to check if echoes are on or off (called
;when a '?' is seen)
; UPD ID= 1122, SNARK:<5.MONITOR>COMND.MAC.21,   3-Oct-80 14:17:24 by SCHMITT
;TCO 5.1166 - Fix parsing when .CMTXT is alternate to other functions
;	      Create new bit CMNP1 which will say not to perform pass 1
;	      for certain functions, (.CMTXT) is one.
; UPD ID= 988, SNARK:<5.MONITOR>COMND.MAC.20,   4-Sep-80 15:13:22 by GRANT
;Rewrite PARNOD - add a special entry point for non-ASCIZ strings and
;add DECnet Phase III restriction of at least 1 alphabetic character
; UPD ID= 780, SNARK:<5.MONITOR>COMND.MAC.19,  23-Jul-80 10:56:15 by MURPHY
; ^R after deleting one character after wraparound bug...
; UPD ID= 767, SNARK:<5.MONITOR>COMND.MAC.18,  18-Jul-80 21:19:50 by ZIMA
;TCO 5.1104 - fix typo in RETERR at RDTXT1:+12L
; UPD ID= 748, SNARK:<5.MONITOR>COMND.MAC.17,   9-Jul-80 09:41:23 by OSMAN
;tco 5.1101 - Make "MOU TAP FOO:/VOLID:ABC/WE" give correct error
; UPD ID= 742, SNARK:<5.MONITOR>COMND.MAC.15,   8-Jul-80 10:24:56 by MURPHY
;Fix bug: character left on line when deleting over wraparound
; UPD ID= 740, SNARK:<5.MONITOR>COMND.MAC.13,   7-Jul-80 09:05:22 by OSMAN
;tco 5.1094 - Fix "?" in time/date fields
; UPD ID= 714, SNARK:<5.MONITOR>COMND.MAC.12,  30-Jun-80 16:27:10 by MURPHY
;Fix RD%SUI
; UPD ID= 693, SNARK:<5.MONITOR>COMND.MAC.11,  25-Jun-80 08:46:47 by OSMAN
;tco 5.1076 - Make "SYS ABC^V$^V$<cr>" not beep
; UPD ID= 690, SNARK:<5.MONITOR>COMND.MAC.10,  24-Jun-80 13:33:41 by OSMAN
;tco 5.1075 - Make "SET LOC" do "2102" instead of "L2102"
; UPD ID= 674, SNARK:<5.MONITOR>COMND.MAC.9,  18-Jun-80 17:58:45 by OSMAN
;tco 5.1069 - Prevent "?Device is not a terminal"
; UPD ID= 585, SNARK:<5.MONITOR>COMND.MAC.8,   2-Jun-80 13:52:15 by MURPHY
;MAKE ^U HANDLE MULTIPLE WRAPAROUNDS BETTER
; UPD ID= 584, SNARK:<5.MONITOR>COMND.MAC.7,   2-Jun-80 13:03:22 by MURPHY
;Use clear EOL function instead of clear EOS for speed
; UPD ID= 572, SNARK:<5.MONITOR>COMND.MAC.6,  30-May-80 16:36:30 by MURPHY
;Fix cases where initial <esc> would ding instead of using GTJFN defaults
; UPD ID= 506, SNARK:<5.MONITOR>COMND.MAC.5,   5-May-80 10:52:51 by OSMAN
;tco 5.1032 - Don't return <Cr> after date/time in atom buffer
;Make CMRFLN work as its comment says (rather than nth character being
;break character)
;Make COMND jsys faster by using ADJBP instead of calling DBP
; UPD ID= 491, SNARK:<5.MONITOR>COMND.MAC.4,  30-Apr-80 09:33:52 by OSMAN
;<4.1.EXEC>COMND.MAC.9, 30-Apr-80 09:24:10, EDIT BY OSMAN
;tco 5.1027 - Don't say "ambiguous" when keyword or switch omitted entirely
; UPD ID= 474, SNARK:<5.MONITOR>COMND.MAC.3,  24-Apr-80 15:38:41 by OSMAN
;tco 5.1024 - Don't say "?Ambiguous" if switch input is "/A:" and table
;contains "A:" and "AB:"
;<4.1.MONITOR>COMND.MAC.119, 21-Mar-80 14:55:31, EDIT BY OSMAN
;More 4.2463, 4.2382 - Clear atom buffer if slash not seen for switch, so
;"PRINT XYZ" says "file not found" instead of "not a switch..."
; UPD ID= 340, SNARK:<4.1.MONITOR>COMND.MAC.118,  18-Mar-80 09:21:35 by OSMAN
;tco 4.1.1116 - Don't put in space for last linefeed in indirect file
; UPD ID= 326, SNARK:<4.1.MONITOR>COMND.MAC.117,  12-Mar-80 15:10:34 by OSMAN
;More 4.1.1016 - remove code after ITEXTI that checks for break character
; UPD ID= 206, SNARK:<4.1.MONITOR>COMND.MAC.116,  16-Jan-80 16:47:43 by SCHMITT
; Tco 4.1.1069 - Let '+' & '-' char be valid terminators to .CMNUX
; UPD ID= 96, SNARK:<4.1.MONITOR>COMND.MAC.115,   5-Dec-79 11:31:31 by OSMAN
;tco 4.1.1046 - Prevent double beep on "COPY <esc>"
; UPD ID= 42, SNARK:<4.1.MONITOR>COMND.MAC.114,  28-Nov-79 15:15:20 by OSMAN
;Tco 4.1.1034 - Allow "?" in text lines (like MS subject lines and
;^ESEND commands)
;<4.1.MONITOR>COMND.MAC.113, 14-Nov-79 16:17:50, EDIT BY OSMAN
;more 4.2500 - If chain is .CMNUM, .CMKEY with default string "0",
;and input is "b" which matches a keyword, give keyword return instead
;of trying to put in the default number
;<4.1.MONITOR>COMND.MAC.111, 14-Nov-79 10:28:00, EDIT BY OSMAN
;tco 4.1.1019 - Save and restore user's AC4 correctly in .CMTAD
;<4.1.MONITOR>COMND.MAC.110, 13-Nov-79 10:57:49, EDIT BY OSMAN
;TCO 4.1.1016 - Allow formfeed as end-of-line character
;<4.1.MONITOR>COMND.MAC.109, 12-Nov-79 15:50:32, EDIT BY OSMAN
;tco 4.1.1015 - give "does not begin with slash" error appropriately
;more 4.2463 - Give correct error for switch/filespec choice
;<4.MONITOR>COMND.MAC.107, 29-Oct-79 13:44:17, EDIT BY OSMAN
;more 4.2500
;<4.MONITOR>COMND.MAC.106, 22-Oct-79 18:23:02, EDIT BY OSMAN
;more 4.2500 - fix "build<osman>" (without the space!)
;<4.MONITOR>COMND.MAC.105, 18-Oct-79 15:19:53, EDIT BY OSMAN
;TCO 4.2500 - IF .CMUSR FOLLOWED BY .CMDIR IN CHAIN, AND INPUT IS "ME:"
;AND "ME" IS A USER AND "ME:" IS A LOGICAL NAME, RETURN THE LOGICAL NAME
;tco 4.2514 - Turn off ^O before reprompting after help messages
;<4.MONITOR>COMND.MAC.103,  3-Oct-79 12:57:45, EDIT BY ZIMA
;More 4.2493 - move .CMCFM list check to last to allow .CMFIL test to
; occur first for those who depend on it.
;<4.MONITOR>COMND.MAC.102, 27-Sep-79 16:44:23, EDIT BY ZIMA
;More 4.2161 - make ^V-<crlf> not a continuation line
;<4.MONITOR>COMND.MAC.101, 27-Sep-79 15:28:17, EDIT BY ZIMA
;TCO 4.2495 - assure correct error code returned if NOUT fails in CMNUMH.
;<4.MONITOR>COMND.MAC.100, 27-Sep-79 15:10:43, EDIT BY ZIMA
;TCO 4.2494 - Avoid incorrect leading "or" text from DOHLP by setting
; the CMQUE2 flag properly in CMRTYP.
;<4.MONITOR>COMND.MAC.99, 27-Sep-79 15:01:27, EDIT BY ZIMA
;TCO 4.2493 - recognize .CMCFM in the list on initial CRLF at NLINE
;<4.MONITOR>COMND.MAC.98, 13-Sep-79 09:51:09, EDIT BY OSMAN
;tco 4.2463 - Give correct error on "DISMOUNT CURDS:"
;<4.MONITOR>COMND.MAC.97, 13-Aug-79 16:24:30, EDIT BY OSMAN
;More of 4.2382 - First try broke "REWIND" command!!!
;<4.MONITOR>COMND.MAC.96, 10-Aug-79 13:41:10, EDIT BY OSMAN
;tco 4.2382 - Give better error on "TERMINAL TYPE VT06" error
;Say "not a switch or keyword" instead of "First non-space is not a digit"
;<4.MONITOR>COMND.MAC.95, 10-Aug-79 12:41:18, EDIT BY OSMAN
;MAKE THE SOURCE FILE SHORTER
;<4.MONITOR>COMND.MAC.94,  1-Aug-79 16:07:05, EDIT BY OSMAN
;tco 4.2365 - Don't clobber user's AC4 on .CMTAD function
;<4.MONITOR>COMND.MAC.93,  1-Aug-79 15:24:44, EDIT BY OSMAN
;tco 4.2364 - Close indirect file if bombout due to space exhaustion in CMDIBQ
;<4.MONITOR>COMND.MAC.92, 26-Jul-79 08:49:35, EDIT BY OSMAN
;MORE OF 4.2299 - UPDATE FLAG WORD WITH QUOTEF
;<4.MONITOR>COMND.MAC.91, 25-Jul-79 15:24:59, EDIT BY R.ACE
;FIX SETZM IN XCMIFI THAT FAILS IF USER NOT IN SECTION 0
;<4.MONITOR>COMND.MAC.90, 25-Jul-79 08:57:23, EDIT BY SCHMITT
;TCO 4.2341-call long form GTJFN all the time
;<4.MONITOR>COMND.MAC.89, 25-Jul-79 08:55:56, EDIT BY SCHMITT
;TCO 4.2340-allow parse if default name in GTJFN block present
;<4.MONITOR>COMND.MAC.88, 20-Jul-79 09:36:32, EDIT BY OSMAN
;MORE TCO 4.2299 - Use FLG2, DDT was doing ^U wrong
;<4.MONITOR>COMND.MAC.87, 20-Jun-79 16:08:23, EDIT BY OSMAN
;tco 4.2299 - Don't reject CTRL/V if char count is 1
;<4.MONITOR>COMND.MAC.86, 14-Jun-79 15:40:34, EDIT BY OSMAN
;tco 4.2288 Strip ESC after parse-only user name
;<4.MONITOR>COMND.MAC.85, 12-May-79 12:59:38, EDIT BY MILLER
;MORE FIXES
;<4.MONITOR>COMND.MAC.84, 11-May-79 14:34:53, EDIT BY MILLER
;<4.MONITOR>COMND.MAC.83, 11-May-79 14:25:56, EDIT BY MILLER
;MAKE DPCTL APPLY PARITY BIT IF NECESSARY
;<4.MONITOR>COMND.MAC.82, 27-Apr-79 17:05:12, EDIT BY OSMAN
;MAKE QUOTED CHARACTER (CTRL/V PRECEDES IT) NEVER BE A BREAK CHARACTER
;<4.MONITOR>COMND.MAC.81, 13-Apr-79 10:26:12, EDIT BY OSMAN
;USE SPECIAL MASK FOR ACCOUNT STRINGS
;<4.MONITOR>COMND.MAC.80, 13-Apr-79 10:06:44, EDIT BY OSMAN
;HONOR CM%BRK FOR .CMTXT AND NOT FOR .CMNOD
;<4.MONITOR>COMND.MAC.79,  4-Apr-79 09:51:44, EDIT BY OSMAN
;more of 4.2227
;<4.MONITOR>COMND.MAC.77, 30-Mar-79 15:36:27, EDIT BY OSMAN
;tco 4.2230 - Fix "!!OPR" to exec.  (Comments on filespecs failed)
;<4.MONITOR>COMND.MAC.76, 29-Mar-79 13:25:01, EDIT BY OSMAN
;tco 4.2228 - Make CTRL/H work after "SUBMIT /DEP:-15<esc>" (it was causing a second error!)
;<4.MONITOR>COMND.MAC.75, 28-Mar-79 16:50:59, EDIT BY OSMAN
;tco 4.2227 - reparse more often
;<4.MONITOR>COMND.MAC.74, 27-Mar-79 17:23:11, EDIT BY OSMAN
;FIX "OPR> SHOW STATUS P?" WHICH WAS GIVING ERROR
;<4.MONITOR>COMND.MAC.73, 21-Mar-79 11:05:37, EDIT BY OSMAN
;tco 4.2221 - Prevent cr after filespec in atom buffer
;<4.MONITOR>COMND.MAC.72, 16-Mar-79 16:56:09, EDIT BY OSMAN
;CLEAR ATOM BUFFER IF .CMCFM FAILS, SO BETTER ERROR CHOICE RESULTS
;<4.MONITOR>COMND.MAC.71, 12-Mar-79 09:48:39, EDIT BY OSMAN
;TCO 4.2213 - CHeck for null device name and return DEVX7
;<4.MONITOR>COMND.MAC.69,  4-Mar-79 14:46:31, Edit by KONEN
;UPDATE COPYRIGHT FOR RELEASE 4
;<4.MONITOR>COMND.MAC.68,  1-Mar-79 09:14:27, EDIT BY OSMAN
;Before reading next character in TEXTI, deposit a null at end of buffer
;<4.MONITOR>COMND.MAC.67, 21-Feb-79 10:36:54, EDIT BY OSMAN
;FIX SUFFIX CODE IN CMRFL0 (BROKE WHILE PUTTING IN COLON STUFF)
;<4.MONITOR>COMND.MAC.66, 20-Feb-79 13:39:26, EDIT BY OSMAN
;turn on colons after node names
;FIX SWITCH DEFAULTING
;<4.MONITOR>COMND.MAC.64, 14-Feb-79 16:32:35, EDIT BY OSMAN
;CALL CHKBLP AT DELIN3 INSTEAD OF WITHIN DELIN LOOP (SO ^U CAUSES RD%BEG TO
;WIN EVEN IF NO INPUT BEFORE THE ^U
;<4.MONITOR>COMND.MAC.63, 14-Feb-79 09:55:08, EDIT BY OSMAN
;TCO 4.2188 - REQUIRE DOUBLE COLONS ON NODE NAMES
;<4.MONITOR>COMND.MAC.62, 29-Jan-79 09:19:13, EDIT BY OSMAN
;demand that node exist for .CMNOD unless CM%PO on
;<4.MONITOR>COMND.MAC.61, 16-Jan-79 17:07:16, EDIT BY OSMAN
;tco 4.2165 - Give VACCX1 if account string too long
;<4.MONITOR>COMND.MAC.60, 13-Jan-79 18:14:39, EDIT BY ZIMA
;TCO 4.2161 - IMPROVE HANDLING OF CONTINUATION LINES AT CMCIN
;<4.MONITOR>COMND.MAC.59,  9-Jan-79 17:23:27, EDIT BY DBELL
;TCO 4.2158 - MAKE .CMUQS FUNCTION WORK PROPERLY IF BREAK MASK INCLUDES
;THE SPECIAL EDITING CHARACTERS ("?", ALTMODE, CONTROL-F).
;<4.MONITOR>COMND.MAC.58,  3-Jan-79 17:53:55, EDIT BY DBELL
;TCO 4.2147 - MAKE ALTMODES AND ^F'S WORK PROPERLY IN QUOTED STRINGS
;<4.MONITOR>COMND.MAC.57, 27-Dec-78 15:14:47, EDIT BY BERKOWITZ
;TCO 4.2134 - Do not Type "one of the following" on help if only 1 element
;		in the switch or keyord table
;<4.MONITOR>COMND.MAC.55, 20-Dec-78 16:56:29, EDIT BY OSMAN
;tco 4.2128 - Get rid of escape and put in space if ESC typed on indirect filespec
;<4.MONITOR>COMND.MAC.54, 20-Dec-78 16:03:39, EDIT BY OSMAN
;tco 4.2126 - indirect files, indirect file errors, best error code
;<4.MONITOR>COMND.MAC.53, 15-Dec-78 16:52:28, EDIT BY OSMAN
;tco 4.2122 - Guarantee that the BIN reading the CTRL/H wakes up on it.
;MAKE ^R CAUSE RETURN IF RD%BEG IS ON (CALL CHKBLP AT RTYPE)
;<4.MONITOR>COMND.MAC.52,  7-Dec-78 16:18:58, EDIT BY OSMAN
;tco 4.2112 - Make comments before guidewords work right.
;<4.MONITOR>COMND.MAC.51, 16-Nov-78 10:45:02, EDIT BY DBELL
;TCO 4.2089 - FIX FNDLIN SO ^G^G^U DOESN'T MOVE CURSOR UP A LINE
;<4.MONITOR>COMND.MAC.50,  4-Nov-78 02:09:47, EDIT BY OSMAN
;tcO 4.2078 - make TBADD understand flags in table entry
;<4.MONITOR>COMND.MAC.49, 30-Oct-78 16:57:47, EDIT BY OSMAN
;TCO 4.2074 - ALLOW $ AND _ IN DEVICE NAMES
;<4.MONITOR>COMND.MAC.47, 27-Oct-78 17:33:17, EDIT BY OSMAN
;MAKE PARNDU RETURN LENGTH IN A
;<4.MONITOR>COMND.MAC.37, 24-Oct-78 17:41:45, EDIT BY OSMAN
;ADD PARNDU
;<4.MONITOR>COMND.MAC.36, 18-Oct-78 13:09:51, EDIT BY OSMAN
;<4.MONITOR>COMND.MAC.35, 17-Oct-78 11:27:45, EDIT BY OSMAN
;<4.MONITOR>COMND.MAC.34, 16-Oct-78 17:47:17, EDIT BY OSMAN
;TCO 4.2046 - ADD RD%BEG
;<4.MONITOR>COMND.MAC.33, 30-Sep-78 20:55:38, EDIT BY DBELL
;TCO 4.2027 - CHECK FOR ^Z ON INDIRECT FILES FOR TERMINALS
;<4.MONITOR>COMND.MAC.32, 28-Sep-78 15:07:43, EDIT BY DBELL
;TCO 4.2026 - IGNORE NULLS READ FROM AN INDIRECT FILE
;<4.MONITOR>COMND.MAC.31, 22-Sep-78 13:18:27, EDIT BY OSMAN
;tco 4.2019 - Beep instead of error if ESC typed at beginning of quoted string
;<4.MONITOR>COMND.MAC.30, 21-Sep-78 11:04:26, EDIT BY KIRSCHEN
;<4.MONITOR>COMND.MAC.29, 21-Sep-78 11:03:32, EDIT BY KIRSCHEN
;<4.MONITOR>COMND.MAC.28, 19-Sep-78 15:40:02, EDIT BY KIRSCHEN
;DISALLOW NULL NODE NAMES
;<4.MONITOR>COMND.MAC.27, 12-Sep-78 17:07:29, EDIT BY OSMAN
;FIX BREAK SET LOOKUP CODE
;<4.MONITOR>COMND.MAC.25,  6-Sep-78 17:17:00, EDIT BY OSMAN
;CHANGED NAMES OF BREAK MASKS IN MONSYM (TO HAVE DOTS IN NAMES)
;<4.MONITOR>NCOMND.MAC.1,  3-Sep-78 12:01:21, EDIT BY OSMAN
;ALLOW CUSTOM BREAK MASKS
;<4.MONITOR>COMND.MAC.23, 18-Aug-78 13:14:37, EDIT BY OSMAN
;PUT SQUARE BRACKETS BACK INTO FILESPEC BREAK SET
;<4.MONITOR>COMND.MAC.22, 11-Aug-78 09:11:26, EDIT BY OSMAN
;WHEN MOVING CURSOR UP ON SCREENS, DECREMENT LINE COUNTER (.MOSLC)
;<HEMPHILL.EXEC>COMND.MAC.3,  7-Aug-78 12:53:49, Edit by HEMPHILL
;TCO 1975 -- MAKE ESCAPE AFTER TOKEN WORK
;<HEMPHILL.EXEC>COMND.MAC.2,  7-Aug-78 12:48:19, Edit by HEMPHILL
;TCO 1974 -- MAKE ESCAPE AFTER COLON IN DEVICE NAMES WORK
;<OSMAN>COMND.MAC.4,  7-Aug-78 09:30:24, EDIT BY OSMAN
;MAKE SO ^R DOESN'T GO UP SCREENS MORE THAN IT SHOULD.
;<OSMAN>COMND.MAC.2,  7-Aug-78 08:59:17, EDIT BY OSMAN
;RESTORE TEXTI TO ALWAYS PERFORM ^U ^R ETC. REGARDLESS OF USER'S BREAK MASK
;<4.EXEC>COMND.MAC.4,  4-Aug-78 15:11:32, EDIT BY OSMAN
;MAKE TEXTI ONLY WAKE ON ITS EDITING CHARACTERS, RATHER THAN ALL CONTROL CHARACTERS
;<4.EXEC>1COMND.MAC.3,  4-Aug-78 14:49:44, EDIT BY OSMAN
;PREVENT TEXTI FROM WAKING ON EVERYTHING AFTER EXECUTING ^W ON SCREENS
;<OSMAN>COMND.MAC.1,  3-Aug-78 20:42:05, EDIT BY OSMAN
;MAKE COMND ONLY WAKE ON ^F $ ? LF
;<4.MONITOR>COMND.MAC.18,  3-Aug-78 11:01:08, EDIT BY R.ACE
;TCO #1966 - FIX BUG IF NODE NAME FIELD TERMINATED WITH ALTMODE
;<4.MONITOR>COMND.MAC.17, 27-Jul-78 15:31:20, EDIT BY OSMAN
;TCO #1960 - ALLOW CM%PO ON .CMDEV FUNCTION
;FIX INPUT OF NEGATIVE NUMBERS (BROKE IN CONJUNCTION WITH "-" STUFF
;WHEN CRLF LOGIC FIXED)
;<3A.MONITOR>COMND.MAC.11, 20-Jun-78 16:29:47, EDIT BY OSMAN
;FIX THE CRLF LOGIC
;<4.MONITOR>COMND.MAC.13,  2-Jun-78 15:26:10, EDIT BY R.ACE
;TCO #1918 - MAKE CTRL/W TREAT CRLF AS A PUNCTUATION CHARACTER
;TCO #1917 - CHANGE ERROR CODE RETURNED BY TEXTI WHEN ARG BLK TOO SHORT
;<OSMAN>COMND.MAC.1, 30-May-78 13:29:59, EDIT BY OSMAN
;PUT CRLF IN COMND BUFFER INSTEAD OF JUST LF
;<OSMAN>3ANEW.MAC.7, 12-Apr-78 17:16:19, Edit by OSMAN
;<4.MONITOR>COMND.MAC.11, 25-Apr-78 10:47:29, EDIT BY OSMAN
;IN .CMFIL FUNCTION, MAKE SURE GJ%CFM IS OFF IN GTJFN BLOCK
;<OSMAN>4MNEW.MAC.5, 12-Apr-78 17:17:07, Edit by OSMAN
;<OSMAN>NEWCOM.MAC.3, 12-Apr-78 11:33:21, EDIT BY OSMAN
;IF LINE WRAPS AND USER TYPES EOL AND RUBS IT OUT, MAKE REPAINT OVERPRINT ORIGINAL LINE
;<4.MONITOR>COMND.MAC.9, 10-Apr-78 15:27:33, EDIT BY OSMAN
;MAKE SURE NULL AT END OF COMMAND IN CMGJ1 LOOP
;<4.MONITOR>COMND.MAC.8, 28-Mar-78 16:39:16, EDIT BY OSMAN
;ON SCREEN, PREVENT REPAINT OF LINE WHEN DELETING TAB AS FIRST CHAR OF SUBSEQUENT LINE
;<OSMAN>NEW4M.MAC.3, 17-Mar-78 16:18:42, Edit by OSMAN
;<OSMAN>NEW4M.MAC.2, 17-Mar-78 15:55:01, Edit by OSMAN
;<OSMAN>COMND.MAC.18, 17-Mar-78 15:22:59, Edit by OSMAN
;<OSMAN>COMND.MAC.17, 17-Mar-78 15:21:08, Edit by OSMAN
;<OSMAN>COMND.MAC.16, 17-Mar-78 15:05:03, Edit by OSMAN
;<OSMAN>COMND.MAC.15, 17-Mar-78 14:57:31, Edit by OSMAN
;<OSMAN>COMND.MAC.14, 17-Mar-78 14:52:05, Edit by OSMAN
;make so no repainting happens on deleting tabs
;<OSMAN>COMND.MAC.13, 17-Mar-78 11:28:35, Edit by OSMAN
;<OSMAN>COMND.MAC.12, 17-Mar-78 10:56:46, Edit by OSMAN
;<OSMAN>COMND.MAC.11, 17-Mar-78 10:47:58, Edit by OSMAN
;DON'T REPAINT WHEN ERASING LAST CHAR ON LINE
;<OSMAN>COMND.MAC.10, 16-Mar-78 17:02:22, Edit by OSMAN
;DON'T CLEAR TO END OF PAGE AFTER ^W, ONLY DURING IF NECESSARY
;<OSMAN>COMND.MAC.4, 16-Mar-78 11:19:57, Edit by OSMAN
;<OSMAN>COMND.MAC.3, 16-Mar-78 10:59:32, Edit by OSMAN
;<OSMAN>COMND.MAC.2, 15-Mar-78 16:24:29, Edit by OSMAN
;CAUSE LESS REPAINTING BY NOT DOING SO ON $ FOR ALTMODE OR FLAGGED CHARACTERS OR UPARROWED CONTROLS
;<OSMAN>COMND.MAC.1, 15-Mar-78 15:22:08, Edit by OSMAN
;<4.MONITOR>COMND.MAC.6,  9-Mar-78 09:35:42, Edit by ENGEL
;ADD SUPPORT FOR THE FULL 128-CHARACTER WAKE UP MASK
;<4.MONITOR>COMND.MAC.5, 31-Jan-78 11:20:43, Edit by ENGEL
;TCO #1881 - CHANGE VERTICAL TAB FROM PUNCTUATION TO TOPS-10 WAKE-UP CLASS
;<4.MONITOR>COMND.MAC.4, 10-Jan-78 10:46:00, EDIT BY HELLIWELL
;CHECK FOR NULL OR MISSING DEFAULT POINTER WHEN CM%DPP SET AND IGNORE
;<4.MONITOR>COMND.MAC.3,  9-Jan-78 15:57:57, EDIT BY OSMAN
;DON'T WRITE NULL IN CMDIB (TOO INEFFICIENT).  INSTEAD, CALLER SHOULD DO IT AT END OF STRING
;<4.MONITOR>COMND.MAC.2,  4-Jan-78 14:40:27, EDIT BY OSMAN
;<3.SM10-RELEASE-3>COMND.MAC.2,  4-Jan-78 14:40:09, EDIT BY OSMAN
;REPREVENT TRAILING SPACE FROM APPEARING ON EXEC COMMANDS LIKE "PRINT /LIM$" AFTER THE ":" (DON'T ASSUME CMDIB PRESERVES T1!)
;<4.MONITOR>COMND.MAC.1, 18-Dec-77 16:46:35, EDIT BY OSMAN
;PREVENT UNEXPECTED "?GENERATION NUMBER IS NOT NUMERIC" WHEN
;LPT: HAS BEEN DEFINED AS DSK: AND THEN "LIST SNARK:[HALL]FOO.BAR<CR>
;LIST $" IS TYPED TO THE DUMPER PROGRAM (DEPOSIT NULL AFTER CHAR IN CMDIBQ)
;THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
;  OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
;
;COPYRIGHT (C) 1976,1977,1978,1979 BY DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.

	SEARCH PROLOG
	TTITLE COMND
	SWAPCD

;THIS FILE CONTAINS THE COMMAND AND TEXT INPUT SYSTEM, I.E.
;COMND, TBLUK, AND TEXTI.  THESE ARE EFFECTIVELY LIBRARY
;ROUTINES BUT ARE IN THE MONITOR FOR CONVENIENT ACCESS.

;NO SPECIAL AC DEFINITIONS ARE USED HEREIN.

;THE COMMAND SCANNER JSYS.  THIS ATTEMPTS TO PARSE THE NEXT FIELD
;OF AN INPUT COMMAND LINE.  IT READS ADDITIONAL INPUT IF NECESSARY,
;AND ATTEMPTS TO RECOGNIZE THE FIELD SPECIFIED BY 'FN'.
; T1/ PTR TO COMND STATE BLOCK
; T2/ PTR TO LIST OF FUNCTION DESCRIPTOR BLOCKS
;	COMND
; RETURNS +1 ALWAYS,
;  T1/ FLAGS,,BLK PTR
;  T2/ FUNCTION-SPECIFIC RESULT
;  T3/ PTR TO FN BLOCK USED IF SUCCESSFUL PARSE
;  QUANTITIES UPDATED IN STATE BLOCK.  IF INPUT COULD NOT BE PARSED,
;  CM%NOP IS SET AND THE CURRENT POINTER POINTS TO THE UNPARSED INPUT.

;FORMAT OF COMND STATE BLOCK:

.CMFLG==:0			;USER FLAGS,,REPARSE DISPATCH ADDRESS
.CMIOJ==:1			;INJFN,,OUTJFN
.CMRTY==:2			;^R BUFFER POINTER
.CMBFP==:3			;PTR TO TOP OF BUFFER
.CMPTR==:4			;PTR TO NEXT INPUT TO BE PARSED
.CMCNT==:5			;COUNT OF SPACE LEFT IN BUFFER AFTER PTR
.CMINC==:6			;COUNT OF CHARACTERS FOLLOWING PTR
.CMABP==:7			;ATOM BUFFER POINTER
.CMABC==:10			;ATOM BUFFER SIZE
.CMGJB==:11			;ADR OF GTJFN ARG BLOCK
 CM%GJB==:777777		;ADR OF GTJFN ARG BLOCK

;FUNCTION DESCRIPTOR BLOCK

.CMFNP==:0			;FUNCTION AND POINTER
 CM%FNC==:777B8			;FUNCTION CODE
 CM%FFL==:777B17		;FUNCTION-SPECIFIC FLAGS
 CM%LST==:777777		;LIST POINTER
.CMDAT==:1			;DATA FOR FUNCTION
.CMHLP==:2			;HELP TEXT POINTER
.CMDEF==:3			;DEFAULT STRING POINTER

;FLAGS

CM%ESC==:1B0			;ESC SEEN
CM%NOP==:1B1			;NO PARSE
CM%EOC==:1B2			;END OF COMMAND SEEN
CM%RPT==:1B3			;REPEAT PARSE NEEDED
CM%SWT==:1B4			;SWITCH TERMINATED WITH ":"
CM%PFE==:1B5			;PREVIOUS FIELD ENDED WITH ESC
CM%RAI==:1B6			;RAISE INPUT
CM%XIF==:1B7			;NO INDIRECT FILES
CM%WKF==:1B8			;WAKEUP AFTER EACH FIELD

;**;[3067]	Add the [3043] comment   JMP  5-JAN-84
;**;[3043]	Add 1 line   JMP  10-NOV-83
CM%NOC==:1B11			;SEMI COLON DOES NOT START COMMENT
;CM%NSF==:1B12			;THE SUFFIX IS NOT NEEDED (BUT LEGAL IF THERE)
;CM%BRK==:1B13			;BREAK SET IS SUPPLIED
;CM%PO ==:1B14			;PARSE-ONLY - DON'T VERIFY
CM%HPP==:1B15			;HELP PTR PRESENT
CM%DPP==:1B16			;DEFAULT PTR PRESENT
CM%SDH==:1B17			;SUPPRESS DEFAULT HELP MESSAGE
;FLAGS FOR CMTAD FUNCTION

CM%IDA==:1B0			;INPUT DATE
CM%ITM==:1B1			;INPUT TIME
CM%NCI==:1B2			;NO CONVERT TO INTERNAL FORMAT

;FLAGS IN KEYWORD TABLE (FIRST WORD OF STRING IF B0-6 = 0)

CM%INV==:1B35			;INVISIBLE
CM%NOR==:1B34			;NO-RECOGNIZE (PLACE HOLDER)
CM%ABR==:1B33			;ABBREVIATION
CM%FW==:1B7			;FLAG WORD (ALWAYS SET)

;LOCAL MACRO FOR NOPARSE RETURNS

DEFINE NOPARS (CODE)<
	MOVEI T1,CODE
	CALL XCOMNE		;;"CALL" INSTEAD OF "JRST" TO HELP DEBUGGING
   >

;BIT DEFENITIONS FOR THE TEXTI BREAK SETS

CM%CZE==0,,001400		;CTRL/Z ESC
CM%TOP==2360,,001400		;TOPS-10 CODES
CM%PU0==375417,,306360		;TEXTI PUNCTUATION WORD 0
CM%PU1==777774,,001760		; WORD 1
CM%PU2==400000,,000760		; WORD 2
CM%PU3==400000,,00740		; WORD 3
CM%BEL==220,,0			;CARRIAGE RETURN, LINE FEED
;LOCAL FLAGS (RH OF F)

CMQUES==1B18			;? TYPED
CMSWF==1B19			;BEG OF SWITCH SEEN
CMUSRF==1B20			;USER NAME REQUIRED
CMDEFF==1B21			;DEFAULT FIELD GIVEN
CMCFF==1B22			;^F RECOGNIZED FIELD
CMQUE2==1B23			;IN SECOND OR SUBSEQUENT HELP POSSIBILITY
CMBOL==1B24			;FIELD IS AT BEG OF LINE
CMTF1==1B25			;INTERNAL TEMP FLAG
CMINDF==1B26			;DOING GTJFN ON INDIRECT FILE
CMINDT==1B27			;INDIRECT FILE IS A TERMINAL
CMCLCV==1B28			;LAST CHARACTER WAS ^V (UNLESS ^V^V) FOR CMCIN
CMPS1F==1B29			;PASS1 (FIND LONGEST STRING)
CMPS2F==1B30			;PASS2 (REJECT FUNCTIONS NOT YIELDING LONGEST STRING)
CMQCAN==1B31			;HELP CANDIDATE
CMILLF==1B32			;LINEFEED LAST FLAG DURING INDIRECT

;FLAGS IN FUNCTION DISPATCH TABLE
;NOTE:	ONLY THE LEFT HALF IS AVAILABLE

CMNOD==1B0			;NO DEFAULT POSSIBLE
CMSBF==1B1			;SPECIAL BREAK MASK ALLOWED
CMNP1==1B2			;NO PASS ONE FOR THIS FUNCTION FLAG

NOIBCH=="("			;NOISE WORD BEG CHARACTER
NOIECH==")"			;NOISE WORD END CHARACTER
CMSWCH=="/"			;SWITCH CHARACTER
CMSWTM==":"			;SWITCH TERMINATOR
CMHLPC=="?"			;HELP CHARACTER
CMCOM1=="!"			;COMMENT CHARACTER
CMCOM2==";"			;FULL LINE COMMENT CHARACTER
CMDEFC=="#"			;DEFAULT FIELD CHARACTER
CMFREC=="F"-100			;FIELD RECOGNITION CHARACTER
CMINDC=="@"			;INDIRECT FILE CHARACTER
CMRDOC=="H"-100			;REDO COMMAND CHARACTER
CMQTCH==""""			;CHARACTER FOR QUOTED STRINGS
CMCONC=="-"			;LINE CONTINUATION CHARACTER
CMQUOT=="V"-100			;CHARACTER TO QUOTE NEXT CHARACTER

;LOCAL AC USAGE
; F/ FLAGS
; P1/ ORIGINAL,,CURRENT  POINTER TO FUNCTION DESCRIPTOR BLOCK
; P2/ POINTER TO STATE BLOCK (T1 OF CALL)
; P3/ REMAINING FREE SPACE COUNT OF USER'S BUFFER
; P4/ CURRENT POINTER
; P5/ COUNT OF VALID CHARACTERS FOLLOWING CURRENT POINTER
; P6/ TRVAR
.COMND::MCENT
	CALL XCOMND		;DO THE WORK
	XCTU [HRRZ T4,.CMFLG(P2)] ;GET REPARSE DISPATCH ADDRESS IF ANY
	JUMPE T4,COMN1
	TXNE F,CM%RPT		;REPARSE NEEDED?
	HRRM T4,-1(P)		;YES, EFFECT TRANSFER
COMN1:	MRETNG

;**;[7515] Change 1 line at XCOMND:+0L	MDR	1-SEP-87
;**;[3009]	Modify 1L at XCOMND+0L		YKT	SEP-06-83
;**;[7292] Change 1 line at XCOMND:+0L	MDR	30-APR-86
;**;[7325] Change 1 line at XCOMND:+0L	MDR	20-JUN-86
XCOMND::TRVAR <TDSAV4,EXPLEN,XTRALN,PRECHR,PREERR,FSLEN,BSTLEN,BSTERR,<CNODE,WPN>,<SPCMSK,4>,ATBPTR,ATBSIZ,STKFEN,FNARG,<CMCCM,2>,<OCMCCM,2>,PWIDTH,TABSIZ,DATPT,TABDON,CURSOR,CURPOS,KEYSIZ,BIGSIZ,RCFLGS,CMRBRK,SUFPTR,SUFPT0,ATBSUF,INDFLG,TADCNT,CHAR>	;[3009] [7292] [7325] [7515]
	;...

;NOTE: THE REASON THIS LIST IS SO LONG IS THAT MANY OF THESE VARIABLES COULD
;APPROPRIATELY BE STKVARED IN LOCAL ROUTINES USED WITHIN XCOMND.  HOWEVER, EACH
;STKVAR CALL TAKES TWO EXTRA MEMORY WORDS, SO THIS SINGLE TRVAR SEEMS
;LIKE A GOOD WAY TO DO IT.
		;TDSAV4 - SAVED USER'S AC4 DURING TIME/DATE PARSING
		;EXPLEN - EXPECTED LENGTH OF INPUT
		;XTRALN - EXTRA LENGTH, LIKE 1 FOR COLON IN DEVICES
		;	  OR 2 FOR DOUBLE COLON ON NODE NAMES
		;PRECHR - PREFIX CHARACTER FOR CMRFLD
		;PREERR - ERROR CODE FOR CMRFLD
		;FSLEN - FILESPEC LENGTH
		;BSTLEN - LONGEST ATOM BUFFER THAT HAS FAILED
		;BSTERR - ERROR CODE ASSOCIATED WITH BSTLEN
		;CNODE - NODE NAME IN ASCII
		;SPCMSK - CUSTOM USER BREAK MASK FOR FIELD
		;ATBPTR - ATOM BUFFER POINTER
		;ATBSIZ - ATOM BUFFER SIZE
		;STKFEN - STACK FENCE
		;FNARG -  DATA FOR FUNCTION
		;CMCCM - SAVED CC MODE WORDS
		;PWIDTH - TERMINAL WIDTH
		;TABSIZ - TAB SIZE LARGER THAN LARGEST KEYWORD
		;DATPT - POINTER USED DURING CMTAD
		;TABDON - END OF TAB FOR "?" ON KEYWORD
		;CURSOR - LINE POSITION (KEYWORD "?")
		;CURPOS - "	"		"
		;KEYSIZ - KEYWORD LENGTH ("?")
		;BIGSIZ - LENGTH OF LONGEST KEYWORD
		;RCFLGS - RCDIR/RCUSR RETURNED FLAGS
		;CMRBRK - BREAK CONTROL FOR FIELD ROUTINE
		;SUFPTR - POINTER TO SUFFIX STRING
		;SUFPT0 - POINTER TO BEGINNING OF SUFFIX STRING
		;ATBSUF - POINTER TO WHERE SUFFIX BEGINS IN
		;	  ATOM BUFFER
;**;[7325] Add 3 lines at XCOMB0:-33L	MDR	20-JUN-86
		;[7325] OCMCCM - Old CCOC words for ^V, ^W, ^U, ^H weirdness
		;[7325] TADCNT - Counter/Flag for help when in .CMTAD so
		;[7325]          that we are not overly helpful
;**;[7515] Add 1 line at XCOMB0:-30L	MDR	1-SEP-87
		;[7515] CHAR - Temp spot for quote character

;**;[3009]	Add 1 line at XCOMND+2L		YKT	SEP-06-83
	SETZM INDFLG		;[3009]
	MOVEM T1,P2		;SAVE BLOCK PTR
	HRL P1,T2		;KEEP BEGINNING OF FUNCTION CHAIN IN P1
	MOVEM P,STKFEN		;SAVE CURRENT STACK AS FENCE
	MOVEI T1,[COMX11,,.CMRTY ;LIST OF BYTE POINTERS TO CHECK
		COMX12,,.CMBFP
		COMX13,,.CMPTR
		COMX14,,.CMABP
		0]		;MARK OF END OF LIST
	CALL CHKABP		;CHECK ALL BYTE PTRS
	UMOVE P3,.CMCNT(P2)	;SET UP ACTIVE VARIABLES
	UMOVE P4,.CMPTR(P2)
	UMOVE P5,.CMINC(P2)
	XCTU [HLLZ F,.CMFLG(P2)] ;GET 'GIVEN' FLAGS
	TXZ F,CM%PFE!CMPS2F
	TXZE F,CM%ESC		;PREVIOUS FIELD HAD ESC?
	TXO F,CM%PFE		;YES
	XCTU [HRRZ T1,.CMIOJ(P2)] ;GET OUTPUT JFN
	RFCOC			;GET CC MODES
	DMOVEM T2,CMCCM		;SAVE THEM
	TXZ T2,3B<CMFREC*2+1>	;NO ECHO ^F
	TXO T2,3B<.CHLFD*2+1>	;PROPER HANDLING OF NL
;**;[7292] Replace 1 line with 3 lines at XCOMB0:-6L	MDR	30-APR-86
	ANDCM T3,[3B1+3B7+3B9+3B11+3B19] ;[7292] No echo for ^R, ^U, ^V, ^W, & escape
	CAMN T2,CMCCM		;[7292] Change only if necessary
	CAME T3,1+CMCCM		;[7292]
	SFCOC
;**;[7292] Add 1 line at XCOMB0:-1L	MDR	20-APR-86
	DMOVEM T2,OCMCCM	;[7292] Save ours for later
XCOMB0:	SETZM EXPLEN		;CLEAR EXPECTED LENGTH OF FIELD
	TXO F,CMPS1F		;MARK THAT WE'RE IN PASS 1
XCOMB:	SETOM BSTLEN		;-1 IS SMALLER THAN ANY ATOM BUFFER SIZE
	SETZM BSTERR		;SAY ONLY LENGTH ERRORS SEEN SO FAR
	HLR P1,P1		;START AT BEGINNING OF FUNCTION CHAIN
	; ..
	; ..
XCOMN0:	MOVE P,STKFEN		;NORMALIZE STACK IN CASE ABORTED ROUTINES
	SETZM XTRALN		;NO EXTRA LENGTH YET
	TXZ F,CM%ESC+CM%NOP+CM%EOC+CM%RPT+CM%SWT+CMBOL+CMCFF+CMDEFF+CMINDF+CMCLCV ;INIT FLAGS
	XCTU [CAMN P4,.CMBFP(P2)] ;AT BEG OF LINE?
	TXO F,CMBOL		;YES
XCOM5:	HRRZ T1,P1		;GET ADDRESS ONLY
	ULOAD T1,CM%FFL,.CMFNP(T1) ;GET FUNCTION FLAGS
	STOR T1,CM%FFL,F	;KEEP WITH OTHER FLAGS
	HLRZ Q1,P1		;GET CM%DPP FLAG FROM FIRST BLOCK ONLY
	XCTU [XOR F,.CMFNP(Q1)]
	TXZ F,CM%DPP
	XCTU [XOR F,.CMFNP(Q1)]
	TXNN F,CM%BRK		;IS THERE SPECIAL BREAK MASK?
	JRST XCOM6		;NO
	HRRZ T1,P1		;GET ADDRESS OF CURRENT FUNCTION BLOCK
	XCTU [MOVE T4,.CMBRK(T1)] ;YES, GET USER ADDRESS OF IT
	XCTU [DMOVE T1,(T4)]	;GET FIRST TWO WORDS
	XCTU [DMOVE T3,2(T4)]	;GET REST
	DMOVEM T1,SPCMSK	;SAVE FIRST TWO WORDS
	DMOVEM T3,2+SPCMSK	;AND REST
XCOM6:	TXNN F,CM%DPP		;IS HE SUPPLYING DEFAULT STRING?
	JRST XCOM5A		;NO, NO CHECK
	UMOVE T1,.CMDEF(Q1)	;GET DEFAULT POINTER
	CALL CHKBP		;CHECK IT FOR LEGALITY
	 CAIA			;ILLEGAL, SKIP ILDB (0 POINTER = NULL STRING)
	XCTBU [ILDB T1,T1]	;GET FIRST BYTE OF STRING
	SKIPN T1		;NON-ZERO?
	TXZ F,CM%DPP		;NO, MAKE BELIEVE NO DEFAULT GIVEN
XCOM5A:	HRRZ T1,P1
	UMOVE T1,.CMDAT(T1)	;GET FUNCTION DATA IF ANY
	MOVEM T1,FNARG		;KEEP LOCALLY
	CALL GETFUN		;GET FUNCTION CODE
;**;[7404] Remove 3 lines at XCOM5A:+4L	MDR	15-DEC-86
	HLRZ T1,CFNTAB(T1)	;GET TABLE POINTER FOR IT
	MOVE T1,COBFGS(T1)	;GET FLAG WORD
	JXN T1,CMNOD,XCOM0	;DISPATCH NOW IF NO DEFAULT POSSIBLE
	TXNE F,CM%PFE		;PREVIOUS FIELD ENDED WITH ESCAPE?
	JRST [	CALL GETFUN	;YES, SEE IF GUIDEWORD FUNCTION
		CAIN T1,.CMNOI	;IS IT?
		JRST XCOM8	;YES, SO GO TYPE GUIDE WORDS, NO POSSIBLE COMMENT, LINE CONTINUATION ETC.
		JRST .+1]	;NOT GUIDE WORD FUNCTION
	CALL INILCH		;SKIP SPACES AND INIT ATOM BUFFER
NLINE:	CALL RDCRLF		;END-OF-LINE FIRST THING ON IT?
	 CAIA			;NO
	JRST [	TXNE F,CMPS1F	;JUST SCANNING?
		JRST .+1	;YES, SO CR NOT SPECIAL
		CALL UNCRLF	;YES, PUT IT BACK
		CALL GETFUN	;OBTAIN THE FUNCTION CODE
		CAIN T1,.CMCFM	;CONFIRM FIRST? (TEST REST BEFORE REPROMPT)
		JRST XCOM0	;YES, DO IT
		TXNN F,CM%DPP	;IF DEFAULT GIVEN, USE IT ON CR
		TXNN F,CMBOL	;AT BGN OF BFR?
		JRST XCOM0	;NO, TRY NULL FIELD
		CAIN T1,.CMFIL	;PARSE ARBITRARY FILE?
		JRST CHKDEF	;YES, CHECK GTJFN BLOCK FOR DEFAULT NAME
		CAIN T1,.CMNOI	;NO, PARSING A NOISE WORD?
		JRST XCOM0	;YES, DO IT
		CALL CHKCFM	;NO, SEE IF THERE IS A CONFIRM IN THE LIST
		JRST CHKDF1	;NONE, REISSUE PROMPT
		JRST XCOM0]	;YES, PROCESS IT
	CAIN T1,CMINDC		;INDIRECT INDICATOR?
	JRST [	TXNN F,CM%XIF	;YES, INDIRECT FILES ALLOWED?
		JRST CMIND	;YES, DO IT
		JRST .+1]	;NO, KEEP CHARACTER AS ORDINARY INPUT
	CAIE T1,.CHESC		;ESC AT BEG OF FIELD?
	CAIN T1,CMFREC
	JRST XCOM2		;^F AT BEG OF FIELD
   ;	CAIN T1,CMDEFC		;OR DEFAULT REQUEST?
   ;	JRST XCOM2		;YES
XCOM3:	CALL CMDIP		;PUT CHAR BACK
XCOM0:	CALL GETFUN		;GET FUNCTION CODE
XCOM7:	TXNN F,CMPS1F		;ARE WE ON PASS1?
	JRST XCOM8		;NO
	HLRZ T2,CFNTAB(T1)	;YES, GET ADDRESS OF CONTROL WORD
	MOVE T1,COBFGS(T2)	;GET SPECIAL FUNCTION FLAGS
	TXNE T1,CMNP1		;SHOULD WE PERFORM A PASS 1?
				;*NOTE* Some functions should not be included
				;in pass 1 because they will end up reading
				;the whole line and as a result, will be the
				;the only function which will get parsed due
				;to the number of characters it has read.
				;The check that used to be here tested whether
				;the function had a break mask and would not
				;perform pass1 if it did not.  We don't want
				;pass 1 performed on .CMTXT but it does have
				;a break mask so previous check was inadequate.
	JRST XC1		;NO, FORGET THIS FUNCTION
	CALL CMRFLD		;SEE HOW MUCH INPUT THIS FUNCTION WOULD READ
XCOM9:	CAML T1,EXPLEN		;BETTER THAN ANY EXPECTED LENGTH SEEN SO FAR?
	MOVEM T1,EXPLEN		;YES, REMEMBER NEW LONG LENGTH
	JRST XC1		;SIZE UP REST OF FUNCTIONS

XCOM8:	HRRZ T1,CFNTAB(T1)	;DO IT
	JRST 0(T1)

CHKDEF: UMOVE T3,.CMGJB(P2)	;GET GTJFN BLOCK ADDRESS
	UMOVE T3,.GJNAM(T3)	;GET DEFAULT NAME STRING POINTER
	JUMPN T3,XCOM0		;IF ONE THERE, PARSE IT
CHKDF1:	CALL CMRSET		;NO,
	SETZ P5,		;EMPTY LINE, IGNORE
	CALL CMRTY0		;REDO PROMPT
	JRST XCOMB0		;RESET PASS1 AND TRY NEXT LINE

;ROUTINE TO GET FUNCTION CODE INTO T1.

GETFUN:	HRRZ T1,P1
	ULOAD T1,CM%FNC,.CMFNP(T1) ;GET FUNCTION CODE
;**;[7404] Add 3 lines at GETFUN:+2L	MDR	15-DEC-86
	CAIL T1,0		;[7404] Function negative?
	CAIL T1,MAXCFN		;[7404] Or out of range?
	ITERR COMNX1		;[7404] Yes, return so
	RET


;CHKCFM - ROUTINE TO SEE IF A .CMCFM FUNCTION APPEARS ON THE USER'S LIST.
;ACCEPTS  P1/	POINTER TO USERS FUNCTION BLOCK
;	CALL CHKCFM
;RETURNS  +1:	IF THERE IS NO .CMCFM ON THE LIST, P1 UNCHANGED
;	  +2:	IF A .CMCFM IS ON THE LIST, P1 IS UPDATED FOR THAT BLOCK
;USES T1.

CHKCFM:	STKVAR	<LSTPTR>	;TO SAVE P1
	MOVEM P1,LSTPTR		;SAVE P1 IN CASE WE NEED TO RESTORE IT
CHKCFL:	CALL GETFUN		;GET FUNCTION CODE FROM BLOCK
	CAIN T1,.CMCFM		;CONFIRM?
	 RETSKP			;YES, RETURN SKIP, P1 POINTS TO ITS BLOCK
	HRRZ T1,P1		;POINT TO THE CURRENT BLOCK
	ULOAD T1,CM%LST,.CMFNP(T1) ;AND GET THE POINTER TO THE NEXT
	HRRM T1,P1		;UPDATE P1 TO THE NEXT BLOCK
	JUMPN T1,CHKCFL		;LOOP AND CHECK BLOCK IF IT EXISTS
	MOVE P1,LSTPTR		;BUT IF AT END, RESTORE OLD VALUE OF P1
	RET			;AND RETURN NONSKIP
;ESC OR ^F AT BEG OF FIELD

XCOM2:	TXNN F,CM%DPP		;YES, HAVE DEFAULT STRING?
	JRST XCOM3		;NO
	CALL CMDCH		;FLUSH RECOG CHAR
	CALL CMGDP		;GET DEFAULT POINTER
	TXO F,CMDEFF		;NOTE FIELD ALREADY IN ATOM BFR
XCOM1:	XCTBU [ILDB T1,Q1]
	JUMPE T1,[CALL CHKLCH	;CHECK FOR NULL DEFAULT STRING
		CAIG T1,0
		ITERR COMX10
		CALL TIELCH	;END OF STRING, TIE OFF ATOM BUFFER
		TXNE F,CMCFF	;^F RECOG?
		JRST XCOMRF	;YES, GO GET MORE INPUT
		MOVEI T1,.CHESC
		CALL CMDIBQ	;YES, APPEND ESC TO BUFFER
		CALL TIECMD	;MAKE SURE NULL AT END OF COMMAND
		CALL CMRSET	;RESET LINE VARIABLES
		JRST XCOMN0]	;TREAT AS ORDINARY INPUT
	CALL STOLCH		;STORE CHAR IN ATOM BUFFER
	CALL CMDIB		;YES, CHAR TO MAIN BUFFER ALSO
	JRST XCOM1

;ROUTINE TO YIELD DEFAULT POINTER IN Q1

CMGDP:	HLRZ Q1,P1		;GET PTR TO FIRST FLD BLOCK
	UMOVE T1,.CMDEF(Q1)	;GET DEFAULT STRING PTR
	CALL CHKBP		;CHECK POINTER
	 ITERR COMX15		;BAD
	MOVEM T1,Q1
	RET

;TABLE OF COMND FUNCTIONS
;	RH:	ADDRESS OF CODE THAT IMPLEMENTS THAT FUNCTION
;	LH:	ADDRESS OF CONTROL BLOCK
;
;FORMAT OF CONTROL BLOCK:
;
	COBLEN==0		;LENGTH OF BLOCK INCLUDING THIS WORD
	COBBRK==1		;0 OR ADDRESS OF BREAK MASK FOR FIELD
	COBFGS==2		;FLAG WORD
	COBPRE==3		;0 OR <XWD PREFIX CHARACTER ,, ERROR CODE>
	COBSUF==4		;ADDRESS OF SUFFIX STRING OR 0

;NOTE:	IF YOU CHANGE THIS FORMAT, IT'S NICE TO LEAVE THE DISPATCH
;	IN THE RIGHT HALF SO THAT CREF LISTINGS SHOW WHERE
;	TO FIND THE CODE

DEFINE MNX (FCODE,DISP,BRK,BTS,PRE,SUF)
<	DEFARG BRK..,BRK
	DEFARG BTS..,BTS
..PRE==PRE			;MIGHT HAVE COMMAS IN IT
	DEFARG PRE..,..PRE
	DEFARG SUF..,SUF
	IFN .-FCODE,<PRINTX ?CFNTAB item FCODE is out of order
>
	XWD [EXP 5,BRK..,BTS..,PRE..,SUF..],DISP
>

;MACRO TO ASSIGN THE SECOND ARG TO THE FIRST, UNLESS THE SECOND IS BLANK,
;IN WHICH CASE 0 IS ASSIGNED

DEFINE DEFARG (VARG,VALUE)
<	VARG==0			;;FIRST ASSUME DEFAULTING TO 0
	IFNB <VALUE>,<VARG==VALUE>
>

CFNTAB:	PHASE 0
	MNX .CMKEY,XCMKEY,KEYBRK,CMSBF		;KEYWORD
	MNX .CMNUM,XCMNUM,NUMBRK		;INTEGER
	MNX .CMNOI,XCMNOI,0,CMNP1		;NOISE WORD
;**;[2995] Change one line at CFNTAB+4L   JMP   26-Jul-83
	MNX .CMSWI,XCMSWI,SWIBRK,CMSBF,<XWD "/",NPXNSW> ;SWITCH
	MNX .CMIFI,XCMIFI,FILBRK		;INPUT FILE
	MNX .CMOFI,XCMOFI,FILBRK		;OUTPUT FILE
	MNX .CMFIL,XCMFIL,FILBRK		;GENERAL FILESPEC
	MNX .CMFLD,XCMFLD,FLDBRK,CMSBF		;ARBITRARY FIELD
	MNX .CMCFM,XCMCFM,0,CMNP1		;CONFIRM
	MNX .CMDIR,XCMDIR,DIRBRK		;DIRECTORY NAME
	MNX .CMUSR,XCMUSR,USRBRK		;USER NAME
	MNX .CMCMA,XCMCMA,0,CMNP1		;COMMA
	MNX .CMINI,XCMINI,0,CMNOD+CMNP1		;INITIALIZE COMMAND
	MNX .CMFLT,XCMFLT,FLTBRK		;FLOATING POINT NUMBER
	MNX .CMDEV,XCMDEV,DEVBRK,CMSBF,0,[ASCIZ /:/] ;DEVICE NAME
	MNX .CMTXT,XCMTXT,TXTBRK,CMSBF+CMNP1	;TEXT
	MNX .CMTAD,XCMTAD,0,CMNP1		;TIME AND DATE
	MNX .CMQST,XCMQST,0,CMNP1		;QUOTED STRING
	MNX .CMUQS,XCMUQS,0,CMNOD+CMNP1		;UNQUOTED STRING
;**;[2852] Change 1 line at .CMTOK	PED	3-NOV-82
;**;[2871] Remove [2852] changes at .CMTOK	PED	18-NOV-82
	MNX .CMTOK,XCMTOK,0,CMNP1		;[2852][2871] TOKEN
	MNX .CMNUX,XCMNUM,NUXBRK		;NUMBER DELIMITED BY NON-DIGIT
	MNX .CMACT,XCMACT,ACTBRK		;ACCOUNT
	MNX .CMNOD,XCMNOD,NODBRK,0,0,[ASCIZ /::/] ;NODE NAME
	DEPHASE
MAXCFN==.-CFNTAB

;RESET EVERYTHING SUCH THAT FIELD CAN BE REREAD.
;THIS ROUTINE IS USEFUL IF FIELD IS READ, AND THEN WE DECIDE WE WANT
;TO REREAD IT WITH A DIFFERENT LENGTH OR BREAK SET SPECIFIED.

CMFSET:	CALL CMRSET		;PUT MAIN POINTER TO BEGINNING OF FIELD
	CALL INILCH		;RESET POINTER TO ATOM BUFFER
	TXZ F,CM%ESC+CM%EOC+CMCFF+CMQUES ;RESET PARSER
	RET

;RESET VARIABLES TO BEGINNING OF CURRENT FIELD

CMRSET:	SUB P5,P3		;RESET VARIABLES TO BGN OF FIELD
	XCTU [ADD P5,.CMCNT(P2)] ;KEEP ALL CURRENT INPUT
	UMOVE P3,.CMCNT(P2)
	UMOVE P4,.CMPTR(P2)
	RET
;STANDARD EXITS

;RETURN AND REPEAT PARSE BECAUSE USER DELETED BACK INTO ALREADY
;PARSED TEXT
;THIS ALSO HAPPENS ON CASES LIKE "COPY <ESC>" WHICH BEEPS.  IF REPARSE WEREN'T
;DONE IN THIS CASE, THEN USER CAN'T CONTINUE WITH "(FROM)".  REPARSE ALSO
;HAPPENS ON "EDIT FOO.XX<ESC>" IF IT BEEPS.  THIS IS NECESSARY FOR PROGRAMS THAT
;CALL COMND ONCE FOR EACH FUNCTION CODE INSTEAD OF WITH A CHAIN, SINCE THE
;MODIFIED FIELD MAY BECOME VALID FOR A PREVIOUS FUNCTION.  FOR INSTANCE, EXEC
;CALLS COMND IN THE "EDIT" COMMAND FOR OLD FILE, AND THEN IF THAT FAILS, IT
;CALLS COMND FOR ANY FILE.  IF BOGUS FILESPEC PROVOKES THE "ANY FILE" CASE,
;AND THE USER EDITS THE FILESPEC INTO AN EXISTING FILE, WE WANT THE OLD FILE
;RETURN TO BE TAKEN.

XCOMRF:	TXO F,CM%RPT		;REQUEST REPEAT
	MOVE T1,P4		;COMPUTE NUMBER CHARS IN BUFFER
	UMOVE T2,.CMBFP(P2)
	MOVEM T2,P4		;RESET PTR TO TOP OF BUFFER
	CALL SUBBP		;COMPUTE PTR-TOP
	MOVEM T1,P5		;SET AS NUMBER CHARS FOLLOWING PTR
	ADDM T1,P3		;RESET COUNT TO TOP OF BUFFER
	JRST XCOMX2		;OTHERWISE UPDATE VARIABLES AND EXIT

;GOOD RETURNS

;RETURN TO FIXESC TO CHECK FOR TRAILING ESCAPE.

FIXESC:	CALL CMCIN		;READ CHARACTER AFTER FIELD
FIXES1:	TXNN F,CM%ESC		;ESCAPE AFTER FIELD?
	CALL CMDIP		;NO, PUT IT BACK
XCOMXR:	TXNE F,CM%ESC		;RECOG CHARACTER TERMINATED?
	CALL CMDCH		;YES, FLUSH IT
XCOMXI:	CALL ESCSPC		;TYPE SPACE IF FIELD ENDED WITH ESCAPE
XCOMX2:	UMOVEM P3,.CMCNT(P2)	;UPDATE VARIABLES
	UMOVEM P4,.CMPTR(P2)
	UMOVEM P5,.CMINC(P2)
XCOMX1:	MOVE P,STKFEN		;RESET STACK
	XCTU [HRRZ T1,.CMIOJ(P2)] ;GET OUTPUT JFN
	DMOVE T2,CMCCM		;GET SAVED CC MODES
	MOVE Q3,LSTERR		;DON'T LOSE REAL ERROR CODE IF SFCOC "FAILS"
	SFCOC			;RESTORE THEM
	MOVEM Q3,LSTERR		;RESTORE CORRECT ERROR
	UMOVEM P2,T1		;ENSURE BLK ADR UNCHANGED
	UMOVEM P1,T3		;RETURN PTR TO FUNCTION BLOCK USED
	TXZ F,CM%FFL		;FLUSH FUNCTION FLAGS
	XCTU [HLLM F,.CMFLG(P2)] ;RETURN FLAGS
	XCTU [HLLM F,T1]	;RETURN IN T1 ALSO
	RET

;ROUTINE TO PUT SPACE IN BUFFER IF ESCAPE ENDED FIELD.

ESCSPC:	TXZN F,CM%ESC		;FIELD TERMINATED WITH RECOG?
	RET			;NO, NOTHING TO DO
	TXNE F,CMCFF		;^F RECOG?
	JRST XCOMRF		;YES, GET MORE INPUT BEFORE RETURNING
	TXO F,CM%ESC		;SET FLAG
	MOVEI T1," "		;TERMINATE TYPESCRIPT WITH SPACE
	CALL CMDIB
	CALLRET CMDIP		;DON'T REALLY PARSE THE SPACE UNTIL NEXT FIELD!
;FAILURE RETURNS - FAILED TO PARSE

XCOMNE:	MOVEM T1,LSTERR		;SAVE ERROR CODE
	CALL TIELCH		;FIX ATOM BUFFER SO "/BLECCH" ON 'SWITCH OR CONFIRM' GIVES "?INVALID SWITCH" INSTEAD OF "?NOT CONFIRMED"
XCOMNP:	JXN F,CMQUES,CMRTYP	;IF IN HELP, DON'T RETURN NOW
	CALL ATMLEN		;GET LENGTH OF ATOM BUFFER
	ADD A,XTRALN		;ADD IN POSSIBLE EXTRA LENGTH
	CAMG A,BSTLEN		;DID THIS FUNCTION GET FURTHER BEFORE ERROR?
	JRST XC1		;NO
	MOVEM A,BSTLEN		;YES, REMEMBER NEW BEST
	MOVE A,LSTERR		;GET BEST ERROR SO FAR
	MOVEM A,BSTERR		;REMEMBER IT
XC1:	CALL CMRSET		;RESET FIELD VARIABLES
	UMOVEM P5,.CMINC(P2)	;FIX USER BLOCK
	HRRZ T1,P1
	ULOAD T1,CM%LST,.CMFNP(T1) ;GET PTR TO NEXT FN BLOCK
	HRRM T1,P1		;SAVE IT
	JUMPN T1,XCOMN0		;DISPATCH IF THERE IS ANOTHER FUNCTION
	TXZE F,CMPS1F		;WERE WE ON PASS 1?
	JRST [	TXO F,CMPS2F	;SAY WE'RE ON PASS 2
		JRST XCOMB]	;GO PARSE ANYTHING THAT'S LONG ENOUGH
	TXZE F,CMPS2F		;WERE WE ON PASS2?
	JRST [	TXNE F,CMQUES	;WERE WE GIVING HELP?
		JRST CMRT1	;YES, SO NOW HELP IS OVER
		SETZM EXPLEN	;MERELY LENGTH PROBLEMS, ALLOW ANY LENGTH THIS TIME
		JRST XCOMB]	;TRY AGAIN
	TXO F,CM%NOP		;NO OTHER POSSIBILITIES, SAY NO PARSE
	MOVE T2,BSTERR		;RETURN BEST ERROR CODE
	MOVEM T2,LSTERR
	UMOVEM T2,T2
	JRST XCOMX1

;ROUTINE TO MEASURE CURRENT LENGTH OF ATOM BUFFER.  IT RETURNS NUMBER
;OF CHARACTERS IN T1.

ATMLEN:	MOVEI T1,0		;START WITH NO CHARACTERS
	UMOVE T2,.CMABP(P2)	;GET POINTER TO ATOM BUFFER
ATML1:	XCTBU [ILDB T3,T2]	;GET NEXT CHARACTER FROM ATOM BUFFER
	JUMPE T3,R		;NULL MEANS END
	AOJA T1,ATML1		;NOT END, COUNT CHARACTER AND LOOP

;HERE AFTER EACH HELP OUTPUT

CMRTYP:	CALL CMRSET		;RESET FIELD VARIABLES
	HRRZ T1,P1
	ULOAD T1,CM%LST,.CMFNP(T1) ;GET NEXT FUNCTION IN LIST
	HRRM T1,P1
;**;[7325] Add 2 lines at CMRTYP:+4L	MDR	20-JUN-86
	TXNE F,CMQUE2		;[7325] Are we done giving all help?
	SETOM TADCNT		;[7325] Yes, set this back to normal
	TXO F,CMQUES		;MARK IN HELP SEQUENCE
	TXNE F,CM%SDH		;MAKE CHECKS TO SET CMQUE2 ONLY AFTER
	TXNE F,CM%HPP		; WE HAVE ALREADY TYPED SOMETHING
	TXO F,CMQUE2		;NOTE SECOND OR SUBSEQUENT POSSIBILITY
	JUMPN T1,XCOMN0		;DO SUBSEQUENT HELPS
CMRT1:	CALL OSYNCH		;CAUSE ^O IN HELP TO FLUSH HELP BUT NOT FLUSH REPROMPT
	SOS P5			;FLUSH QMARK FROM INPUT
	TXZ F,CMQUES+CMQUE2	;NOTE NOT IN HELP
	CALL CMRTY0		;RETYPE LINE
	JRST XCOMB0		;RESTART PARSE OF CURRENT FIELD

;OSYNCH WAITS FOR ALL OUTPUT TO FINISH AND THEN UNDOES ANY POSSIBLE ^O.
;THE UNDOING IS SO THAT IF THE TYPIST TYPES ^O TO FLUSH THE OUTPUT OF THE
;PREVIOUS COMMAND, SHE'LL SEE THE PROMPT FOR THE NEXT COMMAND.  THE PURPOSE
;OF WAITING (SOBE) BEFORE UNDOING ^O IS SO THAT SHE DOESN'T SEE ANY OF THE
;OUTPUT SHE EXPECTED TO FLUSH WITH THE ^O.
;
;OSYNCH THEN GETS TO THE LEFT MARGIN.  THIS IS USED FOR PROMPTING FOR NEW
;COMMANDS, AND FOR RETYPING THE COMMAND AFTER HELP MESSAGES.  (TYPISTS MAY
;TYPE ^O DURING LENGTHY HELP MESSAGES)

;**;[7394] Add missing ERJMPs after JSYS calls	MDR	11-NOV-86
OSYNCH:	XCTU [HRRZ T1,.CMIOJ(P2)] ;WAIT FOR ANY CURRENT OUTPUT
	SOBE
	DOBE
	RFMOD			;GET MODES
	 ERJMP .+1		;[7394]
	TXZE T2,TT%OSP		;OUTPUT SUPPRESS WAS ON?
	SFMOD			;YES, CLEAR IT
	 ERJMP .+1		;[7394]
	XCTU [HRRZ T1,.CMIOJ(P2)] ;GET HANDLE ON OUTPUT CHANNEL
	RFPOS
	 ERJMP .+1		;[7394]
	HRRZ T2,T2
	JUMPE T2,R		;DONE IF ALREADY AT LEFT MARGIN
	MOVEI T1,.CHLFD		;DO CR TO GET TO LEFT MARGIN
	CALLRET CMCOUT
;RETYPE LINE INCLUDING ADVANCE INPUT IF ANY

CMRTY0:	XCTU [SKIPE Q1,.CMRTY(P2)] ;GET ^R PTR IF ANY
CMRTY3:	XCTU [CAMN Q1,.CMBFP(P2)] ;UP TO TOP OF BFR?
	JRST CMRTY2		;DONE WITH ^R PTR
	XCTBU [ILDB T1,Q1]	;TYPE ^R BFR
	JUMPN T1,[CALL CMCOUT
		JRST CMRTY3]
CMRTY2:	UMOVE Q1,.CMBFP(P2)	;GET MAIN BFR PTR
CMRTY4:	CAMN Q1,P4		;UP TO CURRENT PTR?
	JRST CMRTY5		;YES, GO DO ADVANCE INPUT
	XCTBU [ILDB T1,Q1]	;TYPE OUT COMMAND BFR
	CALL CMCOUT
	JRST CMRTY4

CMRTY5:	MOVE Q2,P5		;GET INPUT COUNT
CMRTY6:	SOJL Q2,[SETZ T1,	;ALL INPUT PRINTED, TIE OFF BFR
		XCTBU [IDPB T1,Q1]
		RET]
	XCTBU [ILDB T1,Q1]
	CALL CMCOUT
	JRST CMRTY6
;INDIRECT FILE HANDLING

;**;[3009]	Add one line at CMIND+0L	YKT	SEP-06-83
CMIND:	SETOM INDFLG		;[3009]
	JXO F,CMQUE2,XCOMNP	;NO SECOND HELP POSSIBILITIES
	CALL CMATFI		;GET A JFN ON THE INDIRECT FILE
	 JRST CMINDE		;FAILED
	CALL CMCFM0		;DO A CONFIRM
;**;[3009]	Add one line at CMIND+4L	YKT	SEP-06-83
	 JRST [CALL INDRLJ	;[3009] RELEASE THE JFN 
	       NOPARS NPXNC]	;NOT CONFIRMED
	UMOVE T1,T1		;GET JFN
	DVCHR			;READ CHARACTERISTICS OF DEVICE
	 ERJMP CMIND0		;FAIL, ASSUME NOT A TERMINAL
	LDB T1,[POINTR T1,DV%TYP] ;GET DEVICE TYPE
	CAIN T1,.DVTTY		;IS IT A TTY?
	TXOA F,CMINDT		;YES, REMEMBER THAT
CMIND0:	TXZ F,CMINDT		;NO, CLEAR FLAG
	UMOVE T1,T1		;THE JFN
	MOVX T2,<FLD(7,OF%BSZ)+OF%RD>
	OPENF			;OPEN IND FILE
	 JRST CMINDE		;LOSS
	CALL CMFSET		;FLUSH INDIRECT FILESPEC FROM BUFFER BUT LEAVE SPACES IN
CMIND1:	UMOVE T1,T1		;THE JFN
	BIN			;READ CHAR FROM IND FILE
	 ERJMP CMIND2		;FAILED, PROBABLY END OF FILE
	JUMPE T2,CMIND1		;IGNORE NULLS
	TXZ F,CMILLF		;FIRST ASSUME THIS ISN'T EOL
	CAIN T2,.CHCRT		;IGNORE CR
	JRST CMIND1
	CAIN T2,.CHCNZ		;IS THIS A CONTROL-Z?
	TXNN F,CMINDT		;AND FROM A TERMINAL?
	SKIPA			;NO
	JRST CMIND3		;YES, TREAT AS END OF FILE
	CAIE T2,.CHLFD		;CONVERT EOL TO SPACE
	CAIN T2,.CHESC		;DITTO ESC (BUT THERE SHOULDN'T BE ANY)
	JRST [	MOVEI T2," "
		TXO F,CMILLF	;REMEMBER THAT TRAILING SPACE MAY HAVE TO BE REMOVED
		JRST .+1]
	MOVE T1,T2
	CALL CMDIBQ		;PUT CHAR IN BUFFER WITHOUT TYPEOUT
	JRST CMIND1
CMIND2:	GTSTS			;GET FILE STATUS
	TXNN T2,GS%EOF		;EOF?
	JRST CMINDE		;NO, SOME KIND OF ERROR
CMIND3:	CLOSF			;YES, CLOSE IT
	 JFCL
	TXNE F,CMILLF		;TRAILING SPACE DUE TO EOL?
	CALL CMDIP		;YES, REMOVE IT SINCE SOMEONE MAY BE STRICT
	MOVEI T1,.CHLFD		;TIE OFF LINE
	CALL CMDIBQ
	JRST XCOMRF		;REPARSE LINE AS NOW CONSTITUTED

CMINDE:	CALL CME0
	JRST XCOMNP		;SAY PARSE FAILURE

CME0:	UMOVE T1,T1		;GET INDIRECT JFN AGAIN
	MOVE T3,LSTERR		;DON'T LET CLOSF CLOBBER ERROR CODE
	CLOSF			;CLOSE IT
	 JFCL			;COULDN'T CLOSE IT, IGNORE
	MOVEM T3,LSTERR
	RET

;**;[3009]	Add 6 lines 		YKT	SEP-06-83
INDRLJ:	UMOVE T1,T1		;[3009] GET INDIRECT JFN AGAIN
	MOVE T3,LSTERR		;[3009] DON'T LET RLJFN CLOBBER ERROR CODE
	RLJFN			;[3009] RELEASE IT
	 JFCL			;[3009] COULDN'T RELEASE IT, IGNORE
	MOVEM T3,LSTERR		;[3009]
	RET			;[3009]
;****************************************
;COMND - LOCAL SUBROUTINES
;****************************************

;TEXTI BREAK SET.  NORMALLY ONLY COMND ACTION CHARACTERS, BUT IF
;CM%WKF ON (WAKE ON EVERY FIELD), MUST WAKE ON ALL FIELD TERMINATORS TOO

	BRINI.			;INITIALIZE
	BRKCH. .CHLFD		;BREAK ON LINEFEED
	BRKCH. .CHFFD		;FORMFEED WORKS TO GET TO START COMMAND ON NEW PAGE
	BRKCH. .CHESC		;BREAK ON RECOGNITION
	BRKCH. CMHLPC		;BREAK ON HELP REQUEST
	BRKCH. CMFREC		;BREAK ON FIELD COMPLETION CHARACTER

REGBRK:	EXP W0.,W1.,W2.,W3.	;REGULAR TEXTI BREAK MASK

ALLBRK:	W0.!FLDB0.
	W1.!FLDB1.		;SPECIAL BREAK MASK FOR WAKING ON ALL FIELDS
	W2.!FLDB2.
	W3.!FLDB3.
KEYBRK:	EXP KEYB0.,KEYB1.,KEYB2.,KEYB3.	;KEYWORD BREAK MASK

SWIBRK:	EXP KEYB0.,KEYB1.,KEYB2.,KEYB3.	;SWITCH BREAK SAME AS KEYWORD

USRBRK:	EXP USRB0.,USRB1.,USRB2.,USRB3.	;USER NAME BREAK MASK

ACTBRK:	EXP ACTB0.,ACTB1.,ACTB2.,ACTB3.

FLDBRK:	EXP FLDB0.,FLDB1.,FLDB2.,FLDB3.	;STANDARD FIELD BREAK SET

EOLBRK:	EXP EOLB0.,EOLB1.,EOLB2.,EOLB3.	;BREAK SET FOR READING TO END OF LINE

TXTBRK:	EXP EOLB0.,EOLB1.,EOLB2.,EOLB3.	;TEXT BREAK SET, READ TO END OF LINE

FILBRK:	EXP FILB0.,FILB1.,FILB2.,FILB3.	;FILE BREAK SET

;**;[7413] Change 1 line at DIRBRK:+0L	MDR	22-JAN-87
DIRBRK:	EXP DIRB0.,DIRB1.,DIRB2.,DIRB3.	;DIRECTORY BREAK SET

NODBRK:	EXP FLDB0.,FLDB1.,FLDB2.,FLDB3.	;NODE BREAK SET
					;SAME AS FIELD RIGHT NOW

DEVBRK:	EXP DEVB0.,DEVB1.,DEVB2.,DEVB3.	;DEVICE BREAK SET

;CMRFLD READS INPUT FOR THE CURRENT FUNCTION.
;
;ACCEPTS:	P1/	RIGHT HALF TELLS WHAT FUNCTION
;		F/	CM%BRK TELLS WHETHER USER HAS SUPPLIED SPECIAL BREAK
;			MASK
;		CFNTAB/	CMSBF TELLS WHETHER SPECIAL BREAK MASKS ARE ALLOWED FOR
;			THIS FUNCTION
;
;			WORD COBBRK TELLS ADDRESS OF STANDARD BREAK MASK
;
;			WORD COBPRE HAS 0 OR CHAR,,ERROR
;
;			WORD COBSUF HAS 0 OR ADDRESS OF SUFFIX STRING
;
;RETURNS +1:	T1/	LENGTH OF FIELD INCLUDING PREFIX AND SUFFIX

CMRFLD:	CALL GETBRK		;GET BREAK MASK FOR FUNCTION
	MOVEM T2,CMRBRK		;SAVE BREAK SET ADDRESS
	JUMPE T2,R		;IF NO BREAK MASK, RETURN
	CALL GETFUN		;GET FUNCTION CODE
	HLRZ T4,CFNTAB(T1)	;GET ADDRESS OF CONTROL BLOCK
	SKIPE T1,COBSUF(T4)	;SKIP IF SPECIAL SUFFIX STRING
	HRLI T1,440700		;MAKE BYTE POINTER
	MOVEM T1,SUFPTR		;REMEMBER SUFFIX POINTER
	MOVEM T1,SUFPT0		;REMEMBER INITIAL SUFFIX POINTER
	HLR T1,COBPRE(T4)	;GET POSSIBLE PREFIX CHARACTER
	HRRZM T1,PRECHR		;REMEMBER IT
	HRRZ T1,COBPRE(T4)	;GET POSSIBLE ERROR CODE FOR WHEN PREFIX NOT TYPED
	MOVEM T1,PREERR		;SAVE POSSIBLE ERROR CODE
	CALLRET CMRFL0		;JOIN COMMON CODE

;CMRFLN READS EXACTLY N CHARACTERS.  IN OTHER WORDS, THE N + 1ST CHARACTER
;IS A BREAK CHARACTER, NO MATTER WHAT IT IS.
;
;ACCEPTS:	T1/	-N

CMRFLN:	MOVEM T1,CMRBRK		;SET UP SPECIAL COUNT AS BREAK MASK
	CALLRET CMRFL0		;JOIN COMMON CODE

;CMRFLX READS FIELD WITH SPECIFIED BREAK MASK.  THIS IS USUALLY UNNECESSARY
;BECAUSE THE FUNCTION CODE HAS A STANDARD BREAK MASK WHICH CMRFLD CORRECTLY
;COMPUTES

CMRFLX:	MOVEM T1,CMRBRK		;SAVE SPECIFIC BREAK MASK
	SETZM SUFPTR		;NO SUFFIX
	SETZM SUFPT0
	SETZM PRECHR		;NO PREFIX CHARACTER
CMRFL0:	MOVNI T1,1
	ADJBP T1,ATBPTR
	MOVEM T1,ATBSUF		;INITIALLY ASSUME NO SUFFIX IN ATOM BUFFER
	TXNE F,CMDEFF		;DEFAULT GIVEN?
	JRST CMRATT		;YES, ALREADY IN BUFFER
CMRAT1:	CALL CMROOM		;MAKE SURE ROOM FOR ANOTHER CHARACTER
	CALL CMCIN		;GET NEXT CHARACTER
	CAIN T1,CMQUOT		;THE QUOTING CHARACTER?
	JRST CMRQUT		;YES, READ NEXT CHARACTER REGARDLESS
	CAIE T1,CMFREC		;^F RECOGNITION?
	CAIN T1,.CHESC		;ESC?
	JRST [	TXNN F,CMPS1F	;IF SCANNING, ESCAPE ISN'T SPECIAL
				;WITHOUT THIS CHECK, "COPY FOO.BAR$$"
				;BEEPS INSTEAD OF DEFAULTING!
		CALL CHKLCH	;YES, NOT SPECIAL IF ANYTHING NOW IN ATOM BFR
		JUMPG T1,CMRATT
		CALL CMAMBT]	;NOTHING THERE, DING
	CAIE T1," "		;SPACE OR TAB?
	CAIN T1,.CHTAB
	JRST [	CALL CHKLCH	;YES, RETURN IF ANYTHING IN ATOM BFR
		JUMPG T1,.+1
		JRST CMRAT1]	;OTHERWISE IGNORE
	XCTBU [LDB T1,P4]	;CHKLCH CLOBBERED CHARACTER, GET IT BACK
	CAIN T1,CMHLPC		;HELP REQUEST?
	JRST [	CALL ECOCHK	;YES - ECHOES ON?
		 JRST [	MOVEI T1,.TICCG	;NO - SEND A BELL
			CALL CMCOUT
			CALL CMDCH	;DELETE '?' FROM BUFFER
			JRST XCOMRF ]	;REPARSE
		TXO F,CMQCAN	;YES, FLAG HELP REQUEST
		JRST CMRTIE]
	SKIPG CMRBRK		;BREAK SET GIVEN?
	JRST CMRAT3		;NO, KEEP READING REGARDLESS OF CHARACTER
	SKIPN SUFPTR		;IS THERE A SUFFIX POINTER?
	JRST CMRNS		;NO
	ILDB T2,SUFPTR		;GET NEXT CHARACTER OF SUFFIX
	CAMN T1,T2		;DOES CURRENT CHARACTER MATCH SUFFIX CHARACTER?
	JRST [	MOVE T3,SUFPTR	;YES, SEE IF SUFFIX ENTIRELY MATCHED NOW
		ILDB T3,T3	;PEEK AT NEXT CHARACTER IN SUFFIX
		JUMPN T3,CMRAT3	;IF NOT OVER, NOTHING TO DO YET
		SETZM SUFPTR	;SUFFIX MATCHED, REMEMBER THAT.
		CALL SUFLEN	;GIVE LENGTH CREDIT TO SUFFIX
		MOVEI T1,[EXP -1,-1,-1,-1] ;FORCE BREAK ON EVERYTHING SINCE SUFFIX HAS BEEN SEEN
		MOVEM T1,CMRBRK
		JRST CMRAT1]	;CHECK FOR ESCAPE OR QUESTION MARK AFTER SUFFIX
	CAME T1,T2		;WAS CHARACTER PART OF SUFFIX?
	JRST [	MOVE T3,SUFPT0	;NO, SO RESTART THE SUFFIX SCAN
		MOVEM T3,SUFPTR
		JRST .+1]
CMRNS:	CALL SKPNB		;SKIP IF CHARACTER IS NOT A BREAK CHARACTER
	 JRST CMRAT1		;PREFIX SEEN, SKIP IT
	 JRST CMRATR		;CHAR IS A BREAK.
	MOVE T3,ATBPTR		;NOT A BREAK, REMEMBER CURRENT ATOM POINTER,
	MOVEM T3,ATBSUF		;SO WE'LL KNOW WHERE SUFFIX BEGINS
CMRAT3:	CALL STOLCH		;BUILD KEYWORD STRING
	JRST CMRAT1

;ROUTINE TO CHECK IF ECHOES ARE TURNED ON
;CALL ECOCHK
;
;ACCEPTS:	P2/  POINTER TO STATE BLOCK IN USER'S ADDRESS SPACE
;
;RETURNS:	+1  ECHOES ARE OFF
;		+2  ECHOES ARE ON
;		CLOBBERS T1,T2

;**;[7394] Add missing ERJMPs after JSYS calls	MDR	11-NOV-86
ECOCHK:	XCTU [HLRZ T1,1(P2)]	;GET INPUT JFN
	RFMOD			;GET MODE WORD
	 ERJMP .+1		;[7394]
	TRNN T2,TT%ECO		;ECHOES ON?
	RET			;NOPE
	RETSKP			;YEP

;Routine to return the break mask for a function
;
;CALL GETBRK
;
;Returns +1	Always
;
;	 T2/	Address of break mask
;
;Preserves T1, Trashes T4

GETBRK:	SAVEAC <T1>		;SAVE T1
	CALL GETFUN		;GET THE FUNCTION
	HLRZ T4,CFNTAB(T1)	;GET THE ADDRESS OF CONTROL BLOCK
	SKIPN T2,COBBRK(T4)	;GET ADDRESS OF STANDARD BREAK MASK
	RET			;NONE, SO RETURN 0
	MOVE T1,COBFGS(T4)	;GET SPECIAL FIELD FLAGS
	TXNE F,CM%BRK		;DOES USER HAVE SPECIAL BREAK MASK
	TXNN T1,CMSBF		;IS ONE ALLOWED?
	RET			;NOT GIVEN OR NOT ALLOWED, RETURN
	MOVEI T2,SPCMSK		;USE SPECIAL MASK
	RET			;AND RETURN

;Routine to check if a character is a break character or not.
;This routine allows one to specify a break set on the call
;
;CALL CHKBRK
;
;Accepts  T1/	Character to check
;	  T2/   Address of break set mask
;
;Returns  +1/	Character is a break character
;	  +2/	Character is not a break character
;
;	  T1/	Character
;	  Preserves T2, T3 and T4	;[7413]
;

;**;[7413] Change 1 line at CHKBRK:+0L	MDR	23-JAN-87
CHKBRK:	SAVET			;[7413]
	JUMPE T2,RSKP		;IF NO BREAK SET, RETURN
CHKBR1:	MOVE T4,T2		;PUT BREAK SET ADDRESS IN T4
	MOVE T2,T1		;GET COPY OF CHAR
	IDIVI T2,40		;COMPUT INDEX INTO BIT MASK
	MOVE T3,BITS(T3)	;GET BIT FOR CHARACTER
	ADD T2,T4		;GET WORD OFFSET INTO BREAK SET
	TDNE T3,0(T2)		;BREAK CHARACTER?
	RET			;YES
	RETSKP			;NO

;ROUTINE USED WITHIN CMRFLD TO SKIP IF CHARACTER IN T1 IS NOT A BREAK
;CHARACTER.
;IF A PREFIX IS EXPECTED, AND THE CURRENT CHARACTER IS NOT THE CORRECT
;PREFIX CHARACTER, A PARSE ERROR OCCURS.
;
;ACCEPTS:	T1/	CHARACTER
;
;RETURNS:	+1	CHARACTER WAS PREFIX
;		+2	CHARACTER IS A BREAK CHARACTER
;		+3	CHARACTER NOT A BREAK CHARACTER
;		T1/	CHARACTER

SKPNB:	SKIPLE PRECHR		;SPECIAL PREFIX CHARACTER WANTED?
	JRST SKHPRE		;HANDLE PREFIX
	MOVE T2,CMRBRK		;GET ADDRESS OF BREAK SET
	CALL CHKBR1		;CHECK IF ITS A BREAK CHARACTER
	RETSKP			;YES
	JRST SK2RET		;NO, GIVE DOUBLE SKIP

SKHPRE:	CAME T1,PRECHR		;MAKE SURE PREFIX CHARACTER IS SUPPLIED
	 JRST [	CALL TIELCH	;MAKE SURE 0-LENGTH ATOM SEEN FOR ERROR EVALUATION
		RETSKP]
	SETOM PRECHR		;IT'S BEEN SEEN, REMEMBER
	RET			;RETURN TO SAY PREFIX SEEN

;ROUTINE USED TO COMPUTE LENGTH OF SUFFIX.  THIS LENGTH IS USED AS CREDIT
;TOWARDS THE LENGTH OF ATOMS WHEN COMPUTING ERRORS.  THIS CALCULATION ENABLES
;THE TYPIST TO BE TOLD THAT "ABC:" IS AN INCORRECT DEVICE, BUT "ABC" IS AN
;INCORRECT KEYWORD, WHEN THE CHOICES ARE DEVICE OR KEYWORD, AND "ABC" IS NOT
;EITHER.
;NOTE THAT IF WE EVER AGREE TO PUT THE COLON IN THE ATOM BUFFER, WHICH
;WOULD BE A CONSISTENT THING TO DO, THIS SPECIAL CODE WOULD BE UNNECESSARY,
;SINCE THE COLON WOULD BE IN THE ATOM BUFFER AS A REGULAR CHARACTER TO
;CONTRIBUTE TO THE LENGTH.

SUFLEN:	MOVEI A,0		;A WILL HOLD LENGTH
	MOVE B,SUFPT0		;GET POINTER TO BEGINNING OF SUFFIX
SUFL1:	ILDB C,B		;GET NEXT CHARACTER FROM SUFFIX
	CAIE C,.CHNUL		;LEAVE LOOP IF NULL FOUND
	AOJA A,SUFL1
	MOVEM A,XTRALN		;REMEMBER LENGTH OF SUFFIX
	RET

;GET HERE WHEN QUOTING CHARACTER HAS BEEN SEEN.  QUOTING CHARACTER
;MEANS NEXT CHARACTER SHOULD NEVER BE CONSIDERED A BREAK CHARACTER NO
;MATTER WHAT IT IS.
;[7515] Unless parsing directory name or username.

;**;[7515] Rework 7413	MDR	1-SEP-87
CMRQUT:	MOVEM T1,CHAR		;[7515] Save quoting character
	CALL GETFUN		;[7515] (/T1) Get current function
	CAIE T1,.CMUSR		;[7515] Is function for username?
	CAIN T1,.CMDIR		;[7515] Or maybe directory name?
	IFNSK. <		;[7515] Yes to either
	  NOPARS COMNX4>	;[7515] Say illegal character
	MOVE T1,CHAR		;[7515] Get quoting character back
	CALL STOLCH		;STORE THE QUOTING CHARACTER
	CALL CMCINX		;READ CHARACTER BEING QUOTED (BUT DON'T SET FLAGS!)
	JRST CMRAT3		;STORE CHARACTER AND CONTINUE

;CMROOM DECIDES IF WE CAN READ ANOTHER CHARACTER

CMROOM:	SKIPLE CMRBRK		;BREAK SET GIVEN?
	RET			;YES, SO KEEP READING
	AOSG CMRBRK		;NO, COUNT.  HAVE WE READ ENOUGH?
	RET			;COUNT NOT EXHAUSTED, KEEP READING.
	MOVEI T1,[EXP -1,-1,-1,-1]
	MOVEM T1,CMRBRK		;COUNT EXHAUSTED, FOR BREAK ON ANYTHING
	RET			;GO READ NEXT CHARACTER IN CASE IT'S "?".

CMRATR:	CALL CMDIP		;PUT CHARACTER BACK IN BUFFER
CMRATT:	SKIPN SUFPT0		;IS THERE A SUFFIX?
	JRST CMRNS2		;NO
	MOVEI T1,1		;ATBSUF GOT SAVED BEFORE THE LAST IDPB
	ADJBP T1,ATBSUF		;GET POSITION WHERE SUFFIX BEGAN IN ATOM BUFFER
	MOVEM T1,ATBPTR		;RESET ATOM POINTER TO GET RID OF SUFFIX
	CALL TIELCH		;REALLY GET RID OF IT BY PUTTING NULL AFTER IT
CMRNS2:	TXNE F,CM%ESC		;DON'T TYPE SUFFIX IF GUY DIDN'T TYPE ESCAPE
	SKIPN SUFPT0		;IS THERE A SUFFIX?
	JRST CMRNS1		;NO SUFFIX, OR GUY DIDN'T TYPE ESCAPE BEFORE TYPING SUFFIX
	TXNN F,CMPS1F		;DON'T REMOVE ESCAPE IF JUST SCANNING
	CALL CMDCH		;REMOVE ESCAPE BEFORE APPENDING SUFFIX
	SKIPN SUFPTR		;DID USER TYPE ENTIRE SUFFIX?
	JRST CMRNS1		;NO
	TXNE F,CMPS1F		;ARE WE ONLY MEASURING LENGTHS?
	JRST CMRNS1		;YES, SO DON'T TYPE THE SUFFIX NOW
	CALL SUFLEN		;NO, COMPUTE LENGTH
CMRS:	ILDB T1,SUFPTR		;THERE'S A SUFFIX, GET THE NEXT CHARACTER OF IT
	JUMPE T1,CMRNS1		;LEAVE LOOP IF END OF SUFFIX
	CALL CMDIB		;SHOW SUFFIX TO USER
	JRST CMRS

;END OF FIELD, CHECK TO SEE IF DEFAULT SHOULD BE USED...

CMRNS1:	CALL CHKLCH		;SEE HOW LARGE THE FIELD IS
	JUMPN T1,CMRTIE		;DON'T USE DEFAULT IF SOMETHING TYPED
	TXNN F,CM%DPP		;DID USER SUPPLY A DEFAULT?
	 JRST [	TXNN F,CMPS1F	;DON'T COMPLAIN IF MERELY MEASURING
		SKIPG PRECHR	;NO DEFAULT.  WAS PREFIX CHARACTER EXPECTED?
		JRST CMRTIE	;NO
		MOVE T1,PREERR	;YES, GET ERROR CODE (SUCH AS "SLASH NOT SEEN")
		CALL XCOMNE]	;GIVE ERROR.  "CALL" IS FOR DEBUGGING PURPOSES
	SAVEQ			;ONLY BECAUSE CMGDP CLOBBERS Q1
	TXO F,CMDEFF		;MARK THAT DEFAULT BEING USED
	CALL CMGDP		;GET POINTER TO DEFAULT STRING
CMRDF1:	XCTBU [ILDB T1,Q1]	;GET NEXT CHARACTER OF DEFAULT STRING
	JUMPE T1,CMRTIE		;DONE IF NULL
	CALL SKPNB		;STRIP ILLEGAL CHARS, SO CORRECT ERROR CODE GOES TO USER
	 JRST CMRDF1		;PREFIX SEEN, GET NEXT CHARACTER
	 JRST CMRTIE		;BREAK CHARACTER, STOP COPYING
	CALL STOLCH		;NON-NULL, STORE IN ATOM BUFFER
	JRST CMRDF1		;CONTINUE COPYING

CMRTIE:	CALL TIELCH		;MAKE SURE NULL AT END OF ATOM BUFFER
	CALL ATMLEN		;YES, GET LENGTH OF ATOM WE JUST READ
	ADD T1,XTRALN		;INCLUDE POSSIBLE SUFFIX
	SKIPGE PRECHR		;PREFIX CHARACTER SEEN?
	AOJ T1,			;YES, COUNT IT
	TXNE F,CMDEFF		;ARE WE USING THE DEFAULT STRING?
	MOVEI T1,0		;YES, SO USE 0 SINCE USER DIDN'T REALLY TYPE ANYTHING
	TXNE F,CMPS1F		;PASS 1?
	JRST XCOM9		;YES, UPDATE BEST LENGTH SEEN SO FAR
	CAMGE T1,EXPLEN		;IS IT LONG ENOUGH?
	JRST XC1		;NO, SO GIVE UP ON THIS FUNCTION
	TXZE F,CMQCAN		;FIELD IS LONG ENOUGH.  HELP CANDIDATE?
	TXO F,CMQUES		;YES, IT'S ELECTED!
	RET
;READ QUOTED STRING INTO ATOM BUFFER
;STRING DELIMITED BY ", "" MEANS LITERAL "

;**;[3149] Basically replace CMRQST down to CMRQS2  JMP  Aug 20 84 

CMRQST:	TXNE F,CMDEFF		;HAVE DEFAULT?
	RETSKP			;YES
	CALL RDCRLF		;[3149] SEE IF CRLF FOR DEFAULTING ? 
	IFSKP.
	 TXNN F,CM%DPP		;[3149] YES - GOT A DEFAULT ?
	 RET			;[3149] NO - FAIL
	 CALL UNCRLF		;[3149] BACK UP SO OTHER FIELDS GET CRLF
	 MOVE Q2,Q1		;[3149] SAVE ARG POINTER, CMGDP CLOBBERS Q1
	 CALL CMGDP		;[3149] GET DEFAULT STRING POINTER
	 TXO F,CMDEFF		;[3149] NOTE DEFAULT SHOULD BE TAKEN
	 XCTBU [ILDB T1,Q1]	;[3149] GET 1ST CHARACTER OF DEFAULT STRING
	ELSE.
	 CAIN T1,CMHLPC		;FIRST CHAR IS HELP?
	 JRST [	TXO F,CMQUES	;YES
	         RETSKP]
	 CAIE T1,.CHESC
	 CAIN T1,CMFREC		;RECOGNITION ATTEMPTED?
	  CALL CMAMBT		;YES, AMBIGUOUS
	ENDIF.
	CAIE T1,CMQTCH		;START OF STRING?
	RET			;NO, FAIL
CMRQS1:	TXNE F,CMDEFF		;[3149] GOT DEFAULT ?
	IFSKP.
	 CALL RDCRLF		;END OF LINE?
	  CAIA			;NO
	 CALLRET UNCRLF		;YES, UNREAD IT AND GIVE FAILURE RETURN
	ELSE.
	 XCTBU [ILDB T1,Q1]	;[3149] GET NEXT CHARACTER OF DEFAULT STRING
	 JUMPE T1,R		;[3149] FAILURE IF NOT TERMINATED BY QUOTE 
	ENDIF.
	CAIE T1,CMQTCH		;ANOTHER QUOTE?
	JRST CMRQS2		;NO, GO STORE CHARACTER
	TXNE F,CMDEFF		;[3149] YES - GOT DEFAULT ?
	IFSKP.
	 CALL CMCIN		;NO, PEEK AT ONE AFTER
	ELSE.
	 XCTBU [ILDB T1,Q1]	;[3149] GET NEXT CHARACTER OF DEFAULT STRING
	 JUMPE T1,CMRQS3	;[3149] IF NULL, END OF DEFAULT REACHED
	ENDIF.
	CAIN T1,CMQTCH		;PAIR OF QUOTES?
	JRST CMRQS2		;YES, STORE ONE
	TXNN F,CMDEFF		;[3149] TAKING DEFAULT ?
	CALL CMDIP		;NO, PUT BACK NEXT CHAR
CMRQS3:	CALL TIELCH		;[3149] TIE OFF ATOM BUFFER
	RETSKP			;GOOD

CMRQS2:	CALL STOLCH		;STORE CHAR IN ATOM BUFFER
	JRST CMRQS1		;KEEP LOOKING

;INIT ATOM BUFFER

INILCH:	CALL INILC1
	CALLRET CMSKSP		;FLUSH INITIAL SPACES

INILC1:	UMOVE T1,.CMABP(P2)	;GET PTR
	MOVEM T1,ATBPTR
	UMOVE T1,.CMABC(P2)	;GET SIZE
	MOVEM T1,ATBSIZ
	RET

;SHRINK removes characters from the end of the atom buffer.
;
;Accepts:	T1/	number of characters to remove

SHRINK:	MOVN T2,T1		;GET NEGATIVE NUMBER OF CHARACTERS TO REMOVE
	ADJBP T2,ATBPTR		;ADJUST ATOM POINTER TO SHRUNKEN END
	MOVEM T2,ATBPTR		;REMEMBER NEW END
	ADDM T1,ATBSIZ		;SHOW THAT THERE'S MORE ROOM NOW IN ATOM BUFFER
	MOVEI T1,.CHNUL		;GET NULL TO MARK END OF ATOM BUFFER
	XCTBU [IDPB T1,T2]	;PUT NULL IN
	RET

;STORE CHARACTER IN ATOM BUFFER

STOLCH:	SOSGE ATBSIZ		;ROOM?
	ITERR (COMNX2)		;NO
	XCTBU [IDPB T1,ATBPTR]
	RET

;CHECK NUMBER OF CHARACTERS IN ATOM BUFFER

CHKLCH:	UMOVE T1,.CMABC(P2)	;GET ORIG COUNT
	SUB T1,ATBSIZ		;COMPUTE DIFFERENCE
	RET

;TIE OFF ATOM BUFFER

TIELCH:	SKIPG ATBSIZ		;ROOM FOR NULL?
	ITERR COMNX2		;NO, LOSE
	SETZ T1,
	MOVE T3,ATBPTR		;GET POINTER
	XCTBU [IDPB T1,T3]	;DEPOSIT WITHOUT CHANGING PTR
	RET
;GET NEXT INPUT CHARACTER FOR PROCESSING
;HANDLES CONTINUATION LINES
;APPEND TEXT TO BUFFER IF NECESSARY WITH INTERNAL TEXTI
;	CALL CMCIN
; RETURNS +1 ALWAYS, T1/ CHARACTER

CMCIN:	CALL CMCINX		;GET NEXT CHARACTER
	CAIE T1,CMCONC		;POSSIBLE CONTINUATION LINE?
	JRST [	CAIE T1,CMQUOT	;NO, CONTROL-V?
		TXZA F,CMCLCV	;NO, CLEAR THE FLAG
		TXC F,CMCLCV	;YES, TOGGLE FLAG TO HANDLE ^V^V
		JRST CMCINT]	;RETURN
	TXZE F,CMCLCV		;QUOTED DASH? (AND CLEAR FLAG)
	JRST CMCINT		;YES--RETURN THE DASH
	CALL CMCINX		;NO, POSSIBLE CONTINUATION, CHECK NEXT
	CAIN T1,.CHLFD		;LINEFEED?
	JRST CMCIN		;YES.  CONTINUATION LINE
	CAIE T1,.CHCRT		;NOT LF, MAYBE CR,LF?
	JRST [	CALL CMDIP	;NOT CR EITHER, PUT BACK
		MOVEI T1,CMCONC	;GET BACK HYPHEN
		CALLRET CMCINT]	;LIGHT FLAGS AND RETURN
	CALL CMCINX		;WAS CR, DOES LF FOLLOW?
	CAIN T1,.CHLFD		;LINEFEED?
	JRST CMCIN		;YES.  CONTINUATION LINE
	CALL CMDIP		;NO.  PUT CHARACTER BACK
	MOVEI T1,.CHCRT		;AND ALSO PUT
	CALL CMDIP		;BACK THE CARRIAGE RETURN
	MOVEI T1,CMCONC		;AND GET BACK THE HYPHEN TO
	CALLRET CMCINT		;RETURN TO THE CALLER, SETTING FLAGS

;CMCINX READS THE CHARACTER BUT DOESN'T LIGHT ANY FLAGS.

CMCINX:	SOJL P5,[SETZ P5,	;MAKE INPUT EXACTLY EMPTY
		CALL CMCIN1	;NONE LEFT, GO GET MORE
		JRST CMCINX]
	XCTBU [ILDB T1,P4]	;GET NEXT ONE
	SOS P3			;UPDATE FREE COUNT
	RET

;ROUTINE TO SKIP IFF NEW-LINE IS NEXT IN BUFFER.  IF NOT, THE
;CHARACTER SEEN IN LIEU OF NEW-LINE IS IN T1.  NOTE:  USE UNCRLF
;TO BACK UP OVER NEW-LINE, INSTEAD OF CMDIP.

RDCRLF:	CALL CMCIN		;GET NEXT CHARACTER
	CAIE T1,.CHFFD		;FORMFEED COUNTS AS END OF LINE
	CAIN T1,.CHLFD		;LINEFEED?
	RETSKP			;YES, NEW-LINE
	CAIE T1,.CHCRT		;CARRIAGE RETURN?
	RET			;NEITHER, SO NOT NEW-LINE
	CALL CMCIN		;GET CHARACTER AFTER CARRIAGE RETURN
	CAIN T1,.CHLFD		;CARRIAGE RETURN LINEFEED TOGETHER?
	RETSKP			;YES, NEW-LINE
	CALL CMDIP		;NO, PUT NON-LINEFEED BACK
	MOVEI T1,.CHCRT		;SAY CARRIAGE RETURN SEEN
	RET

;LIGHT SPECIAL FLAGS ROUTINE.  TAKES CHARACTER IN T1.

CMCINT:	CAIN T1,CMFREC		;^F?
	JRST [	TXO F,CM%ESC+CMCFF ;YES
		RET]
	CAIN T1,.CHESC		;ESC?
	JRST [	TXO F,CM%ESC	;YES
		RET]
	CAIN T1,.CHLFD		;END OF LINE?
	TXO F,CM%EOC		;YES, MEANS END OF COMMAND
	RET
CMCIN1:	STKVAR <CMCSF,<CMCSAC,7>,CMCSC,CMCBLF>
	MOVEM F,CMCSF		;PRESERVE ACS USED BY TEXTI
	SETZM CMCBLF		;INIT ACCUMULATED FLAGS
	MOVEI T1,CMCSAC
	HRLI T1,Q1
	BLT T1,P4-Q1+CMCSAC	;SAVE Q1-P4
	MOVX T1,RD%JFN+RD%BBG	;SET UP FLAGS
	TXNE F,CM%RAI		;RAISE INPUT REQUESTED?
	TXO T1,RD%RAI		;YES, PASS IT
	TXNE F,CM%WKF		;WAKING ON EVERY FIELD?
	TXO T1,RD%BEG		;YES, SO WE WANT REPARSE ON ^U
	MOVEI Q3,REGBRK		;FIRST ASSUME REGULAR BREAK SET
	TXNE F,CM%WKF		;WAKING ON EVERY FIELD?
	MOVEI Q3,ALLBRK		;YES, SO BREAK ON ALL PUNCTUATION TOO
	MOVE F,T1		;PASS FLAGS TO TEXTI
	UMOVE Q1,.CMRTY(P2)	;SET UP ^R BUFFER
	UMOVE Q2,.CMBFP(P2)	;SET UP TOP OF BUFFER
	UMOVE P1,.CMIOJ(P2)	;SET UP JFNS
	MOVE P2,P4		;SET BACKUP LIMIT AS CURRENT PTR
	MOVEM P3,CMCSC		;SAVE CURRENT COUNT
	SUB P3,P5		;ADJUST COUNT FOR ADVANCE INPUT
	ADJBP P5,P4		;PUSH POINTER PAST CURRENT INPUT
	MOVEM P5,P4
CMCIN2:	MOVE T1,P2-Q1+CMCSAC	;RESTORE P2 TO T1
	XCTU [HLRZ T1,.CMIOJ(T1)] ;GET INPUT JFN
	GTSTS
	TXNE T2,GS%EOF		;AT EOF?
	ITERR COMNX9		;YES, BOMB
	SKIPG P3		;ROOM IN BUFFER FOR MORE INPUT?
	ITERR COMNX3		;NO
	MOVE A,P2-Q1+CMCSAC	;RESTORE P2 TO A
	CALL ITEXTI		;DO INTERNAL TEXTI
	 ITERR			;FAIL, POSSIBLY BAD INPUT JFN
	TXNE F,RD%BFE		;BUFFER EMPTY?
	JRST CMCIN4		;YES
	IORB F,CMCBLF		;ACCUMULATE FLAGS (RD%BLR)
	TXNE F,RD%BLR		;BACKUP LIMIT REACHED?
	JRST CMCIN4		;YES, CLEANUP AND REPARSE
	MOVE P5,CMCSC		;RECOVER PREVIOUS COUNT
	SUB P5,P3		;COMPUTE CHARACTERS JUST APPENDED
	MOVSI T1,CMCSAC		;RESTORE ACS Q1-P4, F
	HRRI T1,Q1
	BLT T1,P4
	MOVE F,CMCSF
	RET

;HERE ON RETURN FROM TEXTI WHICH REACHED BACKUP LIMIT OR WHICH RETURNED
;BECAUSE BUFFER EMPTY.  MUST REPARSE LINE.  RESTORE ACS, BUT LEAVE
;MAIN POINTER AS RETURNED BY TEXTI.

CMCIN4:	DMOVE Q1,Q1-Q1+CMCSAC	;RESTORE Q1-P2
	DMOVE Q3,Q3-Q1+CMCSAC
	MOVE P2,P2-Q1+CMCSAC
	MOVE F,CMCSF		;RESTORE F
	JRST XCOMRF		;RETURN REPEAT PARSE
;SKIP LEADING TABS OR SPACES

CMSKSP:	CALL CMCIN		;GET A CHAR
	CAIE T1," "		;SPACE OR TAB?
	CAIN T1,.CHTAB
	JRST CMSKSP		;YES, KEEP LOOKING
;**;[3067]  Add the [3043] comment   JMP  5-JAN-84
;**;[3043]  At CMSKP+4 replace 1 line with 3 lines  JMP 10-NOV-83
	TXNN F,CM%NOC		;[3043] CAN SEMI COLON CAUSE A COMMENT?
	CAIE T1,CMCOM2		;[3043] YES, IS THIS A SEMI COLON?
	SKIPA			;[3043] SEMI COLON WILL NOT CAUSE A COMMENT
	JRST CMCMT2		;YES
	CAIN T1,CMCOM1
	JRST CMCMT1		;YES
	CALLRET CMDIP		;NO, PUT IT BACK AND RETURN

;COMMENT

CMCMT2:	SETO T1,		;SAY NO TERMINATOR OTHER THAN EOL
CMCMT1:	MOVEM T1,Q2		;REMEMBER MATCHING TERMINATOR
CMCOM:	CALL RDCRLF		;NL?
	 CAIA			;NO
	JRST [	CALL UNCRLF	;YES, PUT IT BACK
		JRST CMSKSP]	;DO WHATEVER
	CAIE T1,CMFREC		;RECOG REQUEST?
	CAIN T1,.CHESC
	 CALL CMAMB		;YES, DING
	CAMN T1,Q2		;MATCHING CHARACTER?
	JRST CMSKSP		;YES, END OF COMMENT
	JRST CMCOM		;NO, KEEP LOOKING

;LOCAL ROUTINE - SUBTRACT ASCII BYTE PTRS
; T1, T2/ ASCII BYTE PTRS
;	CALL SUBBP
; RETURNS +1 ALWAYS,
; T1/ T1-T2

SUBBP:	HRRZ T3,T1		;COMPUTE 5*(A1-A2)+(P2-P1)/7
	SUBI T3,0(T2)
	IMULI T3,5		;COMPUTE NUMBER CHARS IN THOSE WORDS
	LDB T1,[POINT 6,T1,5]
	LDB T2,[POINT 6,T2,5]
	SUBM T2,T1
	IDIVI T1,7
	ADD T1,T3
	RET

;LOCAL ROUTINE - DELETE LAST CHAR INPUT

CMDCH:	MOVNI T1,1		;BACK UP BYTE POINTER
	ADJBP T1,P4
	MOVE P4,T1
	AOS P3			;ADJUST SPACE COUNT
	SETZ P5,		;CAN'T BE ANY WAITING INPUT
	RET

;LOCAL ROUTINE - DECREMENT INPUT POINTER

CMDIP:	XCTBU [LDB T1,P4]	;CHECK THE CHARACTER
	CAIE T1,CMFREC		;A RECOG REQUEST CHAR?
	CAIN T1,.CHESC
	TXZ F,CM%ESC+CMCFF	;YES, RESET FLAGS
	MOVNI T1,1		;BACK UP THE COMMAND POINTER ONE BYTE
	ADJBP T1,P4
	MOVE P4,T1
	AOS P5			;ADJUST COUNTS
	AOS P3
	RET

;ROUTINE TO UNREAD END-OF-LINE.

UNCRLF:	CALL CMDIP		;PUT THE LINEFEED BACK
	XCTBU [LDB T1,P4]	;GET CHARACTER BEFORE LINEFEED
	CAIE T1,.CHCRT		;CARRIAGE RETURN?
	RET			;NO, DON'T UNREAD IT
	CALLRET CMDIP		;YES, UNREAD IT TOO

;ROUTINE TO CALL TO GUARANTEE NULL AT END OF COMMAND SO FAR.

TIECMD:	MOVEI T1,.CHNUL		;GET A NULL
	CALL CMDIBQ		;PUT IT IN COMMAND, CHECKING FOR ROOM
	AOJ P3,			;DON'T REALLY COUNT IT HOWEVER
	MOVNI T1,1
	ADJBP T1,P4		;LEAVE BYTE POINTER SO NEXT IDPB OVERWRITES NULL
	MOVE P4,T1
	RET

;LOCAL ROUTINE - DEPOSIT INTO INPUT BUFFER

CMDIB:	CALL CMCOUT		;TYPE THE CHAR
CMDIBQ:	SETZ P5,		;CLEAR ADVANCE COUNT
	SOSGE P3		;ROOM?
	JRST [	TXNE F,CMINDF	;READING INDIRECT FILE?
		CALL CME0	;YES, CLOSE IT
		ITERR COMNX3]	;SAY OUT OF ROOM
	XCTBU [IDPB T1,P4]	;APPEND BYTE TO USER'S BUFFER
	RET
;APPEND CHARACTER TO INPUT BUFFER
; T1/ CHARACTER

CMAPC:	MOVEM T1,T4		;SAVE CHAR
	MOVE T2,P5		;ADVANCE COUNT
	ADJBP T2,P4		;COMPUTE POINTER TO END OF INPUT
	XCTBU [IDPB T4,T2]	;APPEND THE CHAR
	AOS P5			;UPDATE ADVANCE COUNT
	RET

;DO CALLER-SUPPLIED HELP TEXT IF ANY

DOHLP:	TXNN F,CM%HPP		;USER SPECIFING HELP MESSAGE?
	TXNN F,CM%SDH		;NO, ALSO SUPPRESSING DEFAULT HELP?
	SKIPA			;PRINTING AT LEAST ONE MESSAGE
	RET			;NOT PRINTING ANYTHING
	HRROI T1,[ASCIZ /
  or/]
	TXNE F,CMQUE2		;IN ALTERNATE HELP POSSIBILITIES?
	CALL CMSOUT		;YES, NOT ALTERNATIVE
	TXNN F,CM%HPP		;HAVE HELP POINTER?
	RET			;NO
	MOVEI T1," "
	CALL CMCOUT		;SPACE BEFORE USER TEXT
	HRRZ T1,P1
	UMOVE T1,.CMHLP(T1)	;YES, GET IT
	CALL CMUSOU		;YES, TYPE IT
	RET

;HANDLE AMBIGUOUS TYPE-IN
;DOESN'T RETURN, BUT "CALL CMAMB" IS OFTEN MORE USEFUL THAN "JRST CMAMB"
;SO DURING DEBUGGING YOU CAN TELL HOW YOU GOT HERE
;CMAMBT GIVES NOPARSE IF NOT LAST ITEM IN LIST

CMAMBT:	HRRZ T1,P1
	ULOAD T1,CM%LST,.CMFNP(T1) ;GET PTR TO NEXT FN BLOCK
	JUMPN T1,[NOPARS NPXAMB] ;NO PARSE IF ANOTHER FN AVAILABLE
CMAMB:	TXZN F,CM%ESC		;ESC SEEN?
	JRST [	NOPARS NPXAMB]	;NO, SAME AS UNREC
	XCTBU [LDB T1,P4]	;GET LAST CHARACTER
	CAIE T1,CMFREC		;CHECK FOR ^F
	CAIN T1,.CHESC		;DON'T FLUSH IT UNLESS RECOGNITION CHARACTER
				;CHECK NECESSARY BECAUSE IF PARTIAL RECOGNITION
				;DONE, ESCAPE WAS ALREADY REMOVED FROM
				;BUFFER BEFORE APPENDING THE RECOGNITION STUFF
	CALL CMDCH		;FLUSH RECOG CHAR FROM BUFFER
	MOVEI T1,.CHBEL		;INDICATE AMBIGUOUS
	CALL CMCOUT
	JRST XCOMRF		;GET MORE INPUT AND RESTART
;OUTPUT CHARACTER TO SPECIFIED DESTINATION
; T1/ CHAR
;	CALL CMCOUT
; RETURNS +1 ALWAYS

CMCOUT:	MOVE T2,T1
	XCTU [HRRZ T1,.CMIOJ(P2)] ;GET OUTPUT JFN
	BOUT
	MOVE T1,T2		;RESTORE CHARACTER
	RET

;OUTPUT STRING FROM CURRENT CONTEXT
; T1/ STRING PTR
;	CALL CMSOUT
; RETURN +1 ALWAYS

CMSOUT:	MOVE T2,T1
	XCTU [HRRZ T1,.CMIOJ(P2)] ;GET OUTPUT JFN
	SETZ T3,
	SOUT
	RET

;OUTPUT STRING FROM PREVIOUS CONTEXT
; T1/ STRING PTR
;	CALL CMUSOU
; RETURNS +1 ALWAYS

CMUSOU:	CALL CHKBP		;CHECK BYTE PTR
	 ITERR COMX16		;BAD
	MOVEM T1,T4
	XCTU [HRRZ T1,.CMIOJ(P2)] ;GET OUTPUT JFN
CMUSO1:	XCTBU [ILDB T2,T4]	;GET BYTE FROM PREVIOUS
	JUMPE T2,R		;DONE ON NULL
	BOUT
	JRST CMUSO1
;CHECK ALL BYTE PTRS
; T1/ PTR TO LIST OF ADDRESSES, TERMINATED BY 0

CHKABP:	SAVEQ
	MOVEM T1,Q1		;SAVE LIST PTR
CHKAB1:	HRRZ Q2,0(Q1)		;GET NEXT ADDRESS
	JUMPE Q2,R		;[7405] DONE ON 0
;**;[7405] Put CRLF back	MDR	23-DEC-86
	ADDI Q2,0(P2)		;MAKE PTR TO BLOCK
	UMOVE T1,0(Q2)		;GET BYTE PTR
	CALL CHKBP		;CHECK AND NORMALIZE
	 JRST [	HLRZ T1,0(Q1)	;BAD, GET ERROR CODE
		ITERR ()]	;RETURN
	UMOVEM T1,0(Q2)		;PUT IT BACK
	AOJA Q1,CHKAB1		;DO NEXT

;CHECK A BYTE PTR
; T1/ BYTE PTR - IF LH IS -1, PTR IS FIXED

CHKBP:	HLRZ T2,T1
	CAIN T2,-1
	HRLI T1,(POINT 7,0)
	LDB T2,[POINT 6,T1,11]	;GET BYTE SIZE
	CAIE T2,7		;PROPER?
	RET			;NO
	IBP T1			;INCREMENT AND DECREMENT TO NORMALIZE
	CALL DBP
	RETSKP			;RETURN GOOD
;************************
;FUNCTIONS
;************************

;INITIALIZE LINE AND CHECK FOR REDO REQUEST

XCMINI:	CALL OSYNCH		;SYNCHRONIZE OUTPUT DUE TO POSSIBLE ^O
	XCTU [SKIPE Q1,.CMRTY(P2)] ;DO PROMPT IF ANY
CMINI2:	XCTU [CAMN Q1,.CMBFP(P2)] ;STOP AT TOP OF BUFFER
	JRST CMINI1
	XCTBU [ILDB T1,Q1]
	JUMPN T1,[CALL CMCOUT
		JRST CMINI2]
;**;[7394] Add missing ERJMPs after JSYS calls	MDR	11-NOV-86
CMINI1:	XCTU [CAMN P4,.CMBFP(P2)] ;BUFFER EMPTY?
	JRST CMINI4		;YES, NO REDO POSSIBLE
	XCTBU [LDB T1,P4]	;CHECK LAST CHAR
	CAIN T1,.CHLFD		;END OF LINE?
	JRST CMINI4		;YES, LAST COMMAND OK, NO REDO
	XCTU [HLRZ T1,.CMIOJ(P2)] ;GET IN JFN
	RFMOD			;GET CURRENT WAKEUP CLASS
	 ERJMP .+1		;[7394]
	MOVE T4,T2		;SAVE IN T4
	TXO T2,TT%WAK		;MAKE SURE WE WAKE AFTER FIRST CHARACTER
	SFMOD
	 ERJMP .+1		;[7394]
;**;[7292] Add 3 lines at CMINI1:+10L	MDR	30-APR-86
	DMOVE T2,OCMCCM		;[7292] Move in our CCOC words
	TXZE T2,3B17		;[7292] Turn off CTRL/H if necessary
;**;[7394] Replace 1 line with 4 at CMINI1:+12L	MDR	11-NOV-86
	IFNSK.			;[7394]
	  SFCOC			;[7292][7394] It was necessary
	   ERJMP .+1		;[7394]
	ENDIF.			;[7394]
	BIN			;READ FIRST CHAR
	 ERJMP .+1		;[7394]
	EXCH T2,T4		;PUT CHARACTER IN T4, ORIGINAL WAKEUP CLASS IN T2
	SFMOD			;RESTORE WAKEUP BITS (APPROXIMATELY!)
	 ERJMP .+1		;[7394]
;**;[7292] Add 3 lines at CMINI:+13L	MDR	30-APR-86
	DMOVE T2,OCMCCM		;[7292] Move in our former CCOC words
	TXNE T2,3B17		;[7292] Do we need to restore CTRL/H?
	SFCOC			;[7292] Yes, then do so.
	 ERJMP .+1		;[7394]
	CAIN T4,CMRDOC		;THE REDO CHARACTER?
	JRST CMINI3		;YES
	BKJFN			;NO, PUT IT BACK
	 JFCL
CMINI4:	MOVE T1,P4		;RESET LINE VARIABLES
	UMOVE T2,.CMBFP(P2)
	MOVEM T2,P4
	CALL SUBBP		;COMPUTE CHARACTERS IN LINE
	ADDM T1,P3		;UPDATE SPACE COUNT
	SETZ P5,		;RESET ADVANCE COUNT
	JRST XCOMXI		;RETURN GOOD

CMINI3:	UMOVE P3,.CMCNT(P2)	;RESET VARIABLES TO CURR FIELD
	UMOVE P4,.CMPTR(P2)
	SETZ P5,		;NO INPUT
;**;[7292] Replace 2 lines with 1 line at CMINI3:+3L	MDR	30-APR-86
	CALL CMRTY2		;[7292] Retype with no prompt
	JRST XCOMRF		;RETURN TO REPARSE
;SWITCH - LIKE KEYWORD BUT PRECEDED BY SLASH

XCMSWI:	TXO F,CMSWF		;NOTE DOING SWITCH
	CALL CMRFLD		;READ SWITCH FIELD
	JRST KEYW0		;FINISH LIKE KEYWORD
;KEYWORD LOOKUP FUNCTION

XCMKEY:	TXZ F,CMSWF		;NOT SWITCH
	CALL CMRFLD		;GET INPUT
KEYW0:	CALL DOLOOK		;PERFORM THE LOOKUP
	TXNE F,CMQUES		;HAD "?"
	JRST CMQ1		;YES, GO TYPE ALTERNATIVES
	MOVE Q1,T2		;RETURN FLAGS
	TXNE Q1,TL%AMB		;IF NOT AMBIGUOUS OR
	TXNN F,CMSWF		;IF NOT DOING SWITCH,
	JRST KEYW1		;SKIP FOLLOWING CODE
	JUMPE P5,KMAMB		;IF NOTHING ELSE IN BUFFER, CAN'T PEEK AHEAD
	CALL CMCIN		;SWITCH AND AMBIGUOUS, SEE IF COLON NEXT
	CAIE T1,CMSWTM		;DID USER TYPE COLON AFTER SWITCH?
	JRST [	CALL CMDIP	;NO, UNREAD THE NONCOLON
		CALL KMAMB]	;GO DING, IT'S A REAL AMBIGUOUS SWITCH
	CALL STOLCH		;THERE'S A COLON, SO TRY PUTTING IT ON ATOM
	CALL CMDIP		;UNREAD THE COLON
	CALL TIELCH		;GUARANTEE NULL AFTER COLON IN ATOM BUFFER
	CALL DOLOOK		;TRY THE LOOKUP WITH THE COLON THERE
	MOVEI T1,1		;PREPARE TO REMOVE COLON
	CALL SHRINK		;NOW WE KNOW THERE'S SOMETHING LIKE "/A:" AND
				;"/AB:" IN TABLE AND USER TYPED "/A:"
	JXN Q1,TL%NOM,KMAMB	;IF WAS AMB AND COL MAKES IT NOM, THEN USE ORIGINAL DIAGNOSIS
KEYW1:	JXN Q1,TL%NOM,[NOPARS NPXNOM]	;NO MATCH
	JXN Q1,TL%AMB,KMAMB	;DING
	TXNN Q1,TL%ABR		;AN ABBREVIATION?
	SETZ T3,		;NO, REMAINDER OF STRING IS NULL
	MOVEM T1,Q1		;SAVE TABLE INDEX
	XCTU [HLRZ T2,0(Q1)]
	CALL CHKTBS		;GET TABLE ENTRY FLAGS
	JXE T1,CM%ABR,KEYW3	;JUMP IF NOT ABBREVIATION
	CALL CHKLCH		;GET NUMBER OF CHARACTERS TYPED
	MOVEM T1,Q2		;SAVE IT
	XCTU [HRRZ Q1,0(Q1)]	;GET ENTRY FOR WHICH THIS IS AN ABBREVIATION
	XCTU [HLRZ T2,0(Q1)]
	CALL CHKTBS		;GET STRING PTR FOR IT
	MOVE T3,Q2		;SKIP OVER PART OF STRING ALREADY TYPED
	ADJBP T3,T2
KEYW3:	UMOVEM Q1,T2		;RETURN TABLE INDEX
	JXE F,CM%ESC,KEYW4	;DONE IF NO REC WANTED
	MOVEM T3,Q1		;SAVE PTR TO REMAINDER OF STRING
	CALL CMDCH		;FLUSH RECOG CHARACTER
KEYW2:	XCTBU [ILDB T1,Q1]	;TYPE REMAINDER OF KEYWORD
	JUMPE T1,XCOMXI		;DONE
	CALL CMDIB		;APPEND COMPLETION TO BUFFER
;**;[2620] Add 2 lines at KEYW2:+3L	PED	20-MAY-82
	TXNN F,CMSWF		;[2620] PARSING A SWITCH?
	 JRST KEYW2		;[2620] NO
	CAIN T1,CMSWTM		;A SWITCH TERMINATOR?
	JRST [	TXZ F,CM%ESC	;YES, OVERRIDES ESC
		TXO F,CM%SWT	;NOTE SWITCH TERMINAOTR
		TXNN F,CMSWF	;IN SWITCH?
		CALL CMDIP	;NO, PUT TERMINATOR BACK
		JRST XCOMXI]	;DONE
	JRST KEYW2

KEYW4:	CALL CHKLCH		;SEE IF ATOM NON-NULL
	JUMPE T1,[NOPARS NPXNUL] ;FAIL IF NULL
	JXE F,CMSWF,XCOMXI	;DONE IF NOT SWITCH
	CALL CMSKSP		;SKIP SPACES
	CALL CMCIN		;GET NON-BLANK CHAR
	CAIN T1,CMSWTM		;SWITCH TERMINATOR?
	JRST [	TXO F,CM%SWT	;YES, NOTE
		JRST XCOMXI]	;DONE
	CALL CMDIP		;NO, PUT IT BACK
	JRST XCOMXI		;OTHERWISE OK

DOLOOK:	UMOVE T2,.CMABP(P2)	;POINT TO KEYWORD BUFFER
	MOVE T1,FNARG		;GET TABLE HEADER ADDRESS
	CALL XTLOOK		;LOOKUP
	 ITERR ()		;BAD TABLE
	RET

;COME HERE WHEN SWITCH OR KEYWORD IS AMBIGUOUS.  IF THE USER TYPED ESCAPE,
;THEN WE'LL NOW TRANSFER TO CMAMB TO BEEP.  IF ESCAPE WAS NOT TYPED AND THE
;ATOM BUFFER IS EMPTY MEANING THE USER TYPED NOTHING (SUCH AS CONFIRMING WHEN
;A SWITCH OR KEYWORD WAS REQUIRED), WE'LL GIVE THE NPXNUL ERROR.

KMAMB:	JXN F,CM%ESC,CMAMB	;IF SHE TYPED ESCAPE, GO BEEP
	CALL CHKLCH		;GET LENGTH OF ATOM BUFFER
	JUMPN T1,CMAMB		;DO STANDARD AMBIGUOUS STUFF IF SOMETHING IN ATOM BUFFER
	NOPARS NPXNUL		;OTHERWISE SAY KEYWORD OR SWITCH MISSING
;"?" TYPED, FIRST PARTIAL MATCH FOUND.  TYPE ALL PARTIAL MATCHES

CMQ1:	JXN T2,TL%NOM,[
		CALL DOHLP	;DO USER HELP IF ANY
		JXN F,CMQUE2,CMRTYP ;DO NOTHING IF NOT FIRST ALTERNATIVE
		TXNE F,CM%SDH	;DEFAULT HELP SUPPRESSED?
		JRST CMRTYP	;YES, DONE
		HRROI T1,[ASCIZ / keyword (no defined keywords match this input)/]
		CALL CMSOUT	;TYPE MESSAGE
		JRST CMRTYP]	;RETYPE LINE AND CONTINUE
CMQ3:	MOVEM T1,Q2		;SAVE TABLE INDEX
	CALL DOHLP		;DO USER HELP IF ANY
	TXNE F,CM%SDH		;DEFAULT HELP SUPPRESSED?
	JRST CMRTYP		;YES, DONE
	MOVE Q3,FNARG		;GET TABLE PTR
	XCTU [HLRZ Q1,0(Q3)]	;GET TABLE SIZE
	MOVE T1,Q1		;SAVE THE LENGTH OF THE TABLE
	ADDI Q1,1(Q3)		;COMPUTE TABLE END ADDRESS FOR BELOW
	CAIN T1,1		;ONLY ONE ELEMENT IN THE TABLE
	JRST CMQ6		;YES.. BYPASS "ONE OF THE FOLLOWING"
	HRROI T1,[ASCIZ / one of the following:
 /]
	CALL CMSOUT
CMTAB0:	SOJ Q2,			;GETS INCREMENTED BEFORE EACH APPLICATION
	MOVE Q3,Q2		;SAVE IN Q3 SO IT CAN BE REINITIALIZED
	SETZM TABSIZ		;START WITH TAB SIZE OF 0
	SETOM PWIDTH		;MARK THAT WE DON'T KNOW WIDTH YET
CMTAB1:	CALL CMNXTE		;GET TO NEXT VALID KEYWORD IN TABLE
	 JRST CMTAB2		;NO MORE IN TABLE
	CALL CMGTLN		;CALCULATE LENGTH OF KEYWORD
	CAML T1,TABSIZ		;LONGEST SEEN SO FAR?
	 MOVEM T1,TABSIZ	;YES, REMEMBER IT
	JRST CMTAB1		;LOOK AT REST
CMTAB2:	MOVE T1,TABSIZ
	MOVEM T1,BIGSIZ		;REMEMBER LENGTH OF LONGEST KEYWORD
	MOVEI T1,1+3		;1 SPACES AFTER CRLF AND LEAVE AT LEAST 3 SPACE BETWEEN ITEMS
	ADDM T1,TABSIZ
	MOVE Q2,Q3		;RESTART TABLE POINTER FOR ACTUAL LISTING
CMQ5:	CALL CMNXTE		;GET TO NEXT KEYWORD
	 JRST CMRTYP		;NO MORE, REPEAT COMMAND SO FAR AND CONTINUE
	CALL KEYTAB		;JUSTIFY "TYPEBALL" FOR KEYWORD TYPEOUT
	CALL CMUSOU		;TYPE IT
	JRST CMQ5		;TRY NEXT
CMQ6:	MOVEI T1," "		;GET A BLANK
	CALL CMCOUT		;OUTPUT THE CHARACTER
	JRST CMTAB0		;CONTINUE TABLE PROCESSING

;ROUTINE WHICH TAKES POINTER TO TABLE IN Q2, POINTER TO END OF TABLE
;IN Q1, AND RETURNS POINTER TO KEYWORD NAME IN T1.  SKIPS UNLESS TABLE
;IS EXHAUSTED.  ONLY CONSIDERS PRINTABLE KEYWORDS, AND UPDATES Q2.

CMNXTE:	AOS Q2			;LOOK AT NEXT TABLE ENTRY
CMQ2:	CAML Q2,Q1		;BEYOND END OF TABLE?
	RET			;YES, FINISHED LIST
	XCTU [HLRZ T2,0(Q2)]	;GET STRING PTR FOR IT
	CALL CHKTBS		;GET FLAGS FROM STRING
	JXN T1,CM%INV+CM%NOR,CMNXTE ;SKIP ENTRY IF INVISIBLE OR NOREC
	UMOVE T1,.CMABP(P2)	;POINT TO KEYWORD BUFFER
	CALL USTCMP		;COMPARE
	JUMPE T1,CMQ4		;OK IF EXACT MATCH
	JXE T1,SC%SUB,R		;DONE IF NOT SUBSTRING
CMQ4:	XCTU [HLRZ T2,0(Q2)]	;GET PTR TO STRING FOR THIS ENTRY
	CALL CHKTBS
	MOVE T1,T2
	RETSKP

;ROUTINE TO CALL BEFORE TYPING KEYWORD IN RESPONSE TO "?".  GIVE
;IT USER'S BYTE POINTER IN T1.  IT DECIDES WHETHER KEYWORD WILL FIT
;ON THIS LINE, AND STARTS NEW LINE IF NOT.  IT THEN OUTPUTS A TAB,
;FOLLOWED BY SWITCH DELIMITER (IF KEYWORD IS A SWITCH).

;**;[7394] Add missing ERJMPs after JSYS calls	MDR	11-NOV-86
KEYTAB:	SAVET			;DON'T CLOBBER USER'S BYTE POINTER
	CALL CMGTLN		;COMPUTE LENGTH OF KEYWORD
	MOVEM T1,KEYSIZ		;REMEMBER LENGTH
	XCTU [HRRZ T1,.CMIOJ(P2)] ;GET OUTPUT CHANNEL
	SKIPL PWIDTH		;DO WE ALREADY KNOW HOW WIDE PAPER IS?
	JRST KEY2		;YES, SO DON'T DO SYSTEM CALL
	RFMOD			;ASK SYSTEM WHERE RIGHT MARGIN IS
	 ERJMP .+1		;[7394]
	LDB T3,[220700,,T2]	;ISOLATE RIGHT MARGIN VALUE
	CAIE T3,1		;RIGHT MARGIN TOO LARGE FOR RFMOD?
	JRST KEY3		;NO, WE'VE GOT IT
	MOVEI T2,.MORLW		;YES, ASSUME TERMINAL AND READ IT WITH MTOPR
	MTOPR
	 ERJMP .+1		;[7394]
KEY3:	MOVEM T3,PWIDTH		;SAVE WIDTH, SO NO JSYS CALL NEXT TIME
	JRST KEY5		;FIRST TIME THROUGH, ASSUME NO TAB NEEDED
KEY2:	CALL GETPOS		;FIND OUT WHERE ON LINE WE ARE
	MOVEM T2,CURPOS		;REMEMBER WHERE WE ARE
	CALL CMTAB		;SEE WHERE TAB BRINGS US
	ADD T2,BIGSIZ		;MAKE SURE WE HAVE ROOM FOR ANOTHER COLUMN
	HRROI T1,[ASCIZ /
 /]
	CAMG T2,PWIDTH		;ROOM FOR ANOTHER KEYWORD ON THIS LINE?
	JRST KEY4		;YES, SO DON'T START NEW LINE
	CALL CMSOUT		;GET TO NEXT LINE
	CALL GETPOS		;FIGURE OUT WHERE WE ARE NOW
	MOVEM T2,CURPOS
	CAIA			;NO TAB NECESSARY AT BEGINNING OF LINE
KEY4:	CALL TYPTAB		;TYPE A TAB
KEY5:	MOVX T1,CMSWCH
	TXNE F,CMSWF		;IN SWITCH FIELD?
	CALL CMCOUT		;YES, TYPE SWITCH INDICATOR
	RET			;READY TO TYPE KEYWORD ALL ON SAME LINE NOW

CMTAB:	ADD T2,TABSIZ		;FIGURE OUT MAXIMUM PLACE TAB CAN MOVE US TO
	IDIV T2,TABSIZ		;SCALE DOWN TO REALLY WHERE
	IMUL T2,TABSIZ		;TAB WILL BRING US TO
	RET


;ROUTINE TO TYPE TAB OF SIZE TABSIZ.  IT ASSUMES HARDWARE TABS ARE OF
;SIZE 8 AND TRIES TO TYPE AS MANY REAL TABS AS IT CAN, AND THEN SPACES
;OVER REST OF THE WAY.

TYPTAB:	MOVE T2,CURPOS		;SEE WHERE WE'RE STARTING ON LINE
	MOVEM T2,CURSOR		;REMEMBER WHERE WE ARE
	CALL CMTAB		;SEE WHERE WE WANT TO GET TO
	MOVEM T2,TABDON		;REMEMBER WHERE WE WANT TO GET TO
TYPTB2:	MOVE T1,CURSOR		;GET WHERE WE ARE
	ADDI T1,8		;HARDWARE TAB MIGHT GO THIS FAR
	TRZ T1,7		;BUT MAYBE NOT QUITE
	CAMLE T1,TABDON		;WILL HARDWARE TAB GO TOO FAR?
	JRST TYPTB1		;YES
	MOVEM T1,CURSOR		;NO, SO REMEMBER WHERE IT BRINGS US
	MOVEI T1,.CHTAB
	CALL CMCOUT		;AND TYPE IT
	JRST TYPTB2		;LOOP FOR AS MANY HARDWARE TABS AS WE CAN GET AWAY WITH
TYPTB1:	AOS T1,CURSOR		;START SINGLE SPACING
	CAMLE T1,TABDON		;ARE WE THERE YET?
	RET			;YES, SO TAB IS TYPED
	MOVEI T1," "		;NO, SO SPACE OVER
	CALL CMCOUT
	JRST TYPTB1		;AND LOOP FOR REST OF SPACES

;ROUTINE TO FIND OUT WHERE ON LINE WE ARE.  IF NOT A TERMINAL, ASSUMES
;WE'RE AT RIGHT MARGIN (COLUMN 72)

;**;[7394] Add missing ERJMPs after JSYS calls	MDR	11-NOV-86
GETPOS:	RFPOS			;FIND WHERE ON LINE WE ARE
	 ERJMP .+1		;[7394]
	CAIN T2,0		;NOT A TERMINAL?
	MOVEI T2,^D72		;RIGHT, SO ASSUME WE'RE AT COLUMN 72
	HRRZ T2,T2		;ISOLATE COLUMN POSITION
	RET

;ROUTINE TAKING POINTER TO KEYWORD IN T1.  RETURNS KEYWORD LENGTH IN
;T1.  GIVES EXTRA 1 FOR SWITCH, ASSUMING A SLASH WILL PREFIX ITS
;PRINTOUT.

CMGTLN:	MOVEI T4,0		;COUNT OF NUMBER OF CHARACTERS NEEDED FOR THIS KEYWORD
KEY1:	XCTBU [ILDB T2,T1]	;PICK UP NEXT CHARACTER FROM KEYWORD
	CAIE T2,0		;ASSUME KEYWORD ENDS ON NULL
	AOJA T4,KEY1		;NOT OVER YET, ACCUMULATE ITS LENGTH
	TXNE F,CMSWF		;IS THIS A SWITCH?
	AOJ T4,			;YES, DELIMITER TAKES UP ANOTHER SPACE
	MOVE T1,T4		;RETURN LENGTH IN T1
	RET

;READ REST OF LINE AS ATOM

XCMTXT:	CALL CMRFLD		;READ TEXT
	JXN F,CMQUES,[
		TXNN F,CMQUE2	;IF IN MIDDLE OF HELP LIST, THEN "?" ALWAYS DOES HELP
		JUMPN T1,XCMTQ	;USUALLY "?" IS JUST PART OF TEXT
		CALL DOHLP 	;DO USER HELP
		HRROI T1,[ASCIZ / text string/]
		TXNN F,CM%SDH
		CALL CMSOUT	;TYPE HELP UNLESS SUPPRESSED
		JRST CMRTYP]	;NO DEFAULT MESSAGE
	JXN F,CM%ESC,CMAMB	;JUST DING IF HE TRIES TO DO RECOGNITION
	JRST XCOMXI		;DONE

XCMTQ:	MOVEI T1,CMHLPC		;PUT QUESTION MARK IN TEXT
	CALL STOLCH
	CALL TIELCH		;TIE OFF ATOM BUFFER IN CASE IT IS LAST CHARACTER
	TXZ F,CMQUES		;FORGET THAT WE'RE IN HELP STATE
	JRST XCMTXT		;READ REST OF TEXT
;NOISE WORD FUNCTION

XCMNOI:	MOVE T1,FNARG		;GET STRING PTR
	CALL CHKBP		;CHECK AND NORMALIZE
	 ITERR COMX17		;BAD
	MOVEM T1,Q3
	TXNN F,CM%PFE		;PREVIOUS FIELD ENDED WITH ESC?
	JRST CMNOI1		;NO
CMNOI4:	TXO F,CM%ESC		;YES, MEANS THIS ONE DID TOO
CMN1:	JUMPN P5,[CALL CMCIN	;PASS OVER SPACE PROVOKED BY ESC ON PREVIOUS COMMAND
		  JRST CMN1]
	MOVEI T1,NOIBCH		;TYPE NOISE BEG CHAR
	CALL CMDIB		; AND PUT IT IN BUFFER
CMNOI3:	XCTBU [ILDB T1,Q3]	;GET NEXT NOISE CHAR
	JUMPN T1,[CALL CMDIB	;PUT IT IN BUFFER IF NOT END OF STRING
		JRST CMNOI3]
	MOVEI T1,NOIECH		;END OF STRING, TYPE END CHAR
	CALL CMDIB
	JRST XCOMXI		;EXIT

;PREVIOUS FIELD NOT TERMINATED WITH ESC - PASS NOISE WORD IF TYPED

CMNOI1:	CALL CMSKSP		;BYPASS SPACES
	CALL CMCIN		;GET FIRST CHAR
	CAIE T1,NOIBCH		;NOISE BEG CHAR?
	JRST [	CALL CMDIP	;NO, NOT A NOISE WORD, PUT IT BACK
		JRST XCOMXI]	;RETURN OK
CMNOI2:	CALL CMCIN		;GET NEXT NOISE CHAR
	CAIE T1,CMFREC		;^F?
	CAIN T1,.CHESC		;ESC?
	JRST [	CALL CMDCH	;YES, FLUSH IT
		JRST CMNOI3]	;COMPLETE NOISE WORD FOR USER
	XCTBU [ILDB T2,Q3]	;COMPARE WITH GIVEN STRING
	CAIL T1,"A"+40		;CONVERT TO UC
	CAILE T1,"Z"+40
	SKIPA
	SUBI T1,40
	CAIL T2,"A"+40
	CAILE T2,"Z"+40
	SKIPA
	SUBI T2,40
	CAMN T1,T2
	JRST CMNOI2		;STILL SAME AS EXPECTED
	CAIN T1,NOIECH		;NOT SAME, STRING ENDED TOGETHER?
	JUMPE T2,XCOMXI		;YES, EXIT OK
	NOPARS NPXINW		;NO, PROBABLY BAD NOISE WORD
;CONFIRM

XCMCFM:	CALL CMCFM0		;DO THE WORK
	 CAIA			;FAILED
	JRST XCOMXI		;OK
	NOPARS NPXNC

CMCFM0:	CALL RDCRLF		;CRLF SEEN?
	 CAIA			;NO
	RETSKP			;YES, DONE
	CAIE T1,.CHTAB		;BLANK?
	CAIN T1," "
	JRST CMCFM0		;YES, IGNORE
	CAIN T1,CMHLPC		;HELP?
	JRST [	CALL DOHLP	;DO USER HELP
		HRROI T1,[ASCIZ / confirm with carriage return/]
		TXNN F,CM%SDH
		CALL CMSOUT	;GIVE HELP MESSAGE
;**;[3009]	Add two lines 		YKT	SEP-06-83
		SKIPE INDFLG	;[3009] IS INDIRECT FILE?
		CALL INDRLJ	;[3009] YES, SO RELEASE THE JFN
		JRST CMRTYP]	;RETYPE AND TRY AGAIN
	CAIE T1,CMFREC		;^F?
	CAIN T1,.CHESC		;ESC?
;**[3009]	Add two lines 		YKT	SEP-06-83
	 JRST [SKIPE INDFLG	;[3009] IS INDIRECT FILE?
	       CALL INDRLJ	;[3009] YES, SO RELEASE THE JFN
	       CALL CMAMBT]	;AMBIGUOUS
	RET			;NO, FAIL
;FLOATING POINT NUMBER

XCMFLT:	CALL CMRFLD		;READ FIELD
	JXN F,CMQUES,[CALL DOHLP
		HRROI T1,[ASCIZ / number/]
		TXNN F,CM%SDH	;SUPPRESS DEFAULT?
		CALL CMSOUT	;NO, DO IT
		JRST CMRTYP]
	UMOVE T1,.CMABP(P2)	;NUMBER NOW IN ATOM BUFFER, GET PTR
	UMOVEM T1,T1
	IMCALL .FLIN,MSEC1
	 JRST XCOMNP		;FAILED
	JRST CMNUMR		;DO NUMBER CLEANUP AND RETURN

;FLOATING POINT BREAK SET MASK, ALLOWS +, -, ., E, NUMBERS

FLTBRK:	777777,,777760
	777644,,001760
	400000,,000760
	400000,,000760

;NUMBER

XCMNUM:	CALL CMRFLD		;READ FIELD
	TXNE F,CMQUES		;SAW "?"
	JRST CMNUMH		;YES
XCMNX1:	UMOVE T1,.CMABP(P2)	;SET UP NIN
	UMOVEM T1,T1
	MOVE T3,FNARG		;GET RADIX
	UMOVEM T3,T3
	IMCALL .NIN,MSEC1
	 JRST XCOMNP		;FAILS
CMNUMR:	MOVE T2,ATBPTR
	IBP T2			;BUMP PTR PAST TERMINATOR
	CAMN T1,T2		;NIN SAW WHOLE FIELD?
;**;[7299] Change 1 line at CMNUMR:+3L	MDR	23-MAY-86
	JRST CMNMR1		;[7299] Yes, but check for EOL
;**;[3067]  Add the comment line   JMP 5-JAN-84
;**;[3045]  At CMNUMR+4 replace 1 line with 2 lines  JMP  10-NOV-83
	HRRZ T4,P1		;[3045] GET ADDRESS OF USER FUNCTION BLOCK
	ULOAD T3,CM%FNC,.CMFNP(T4) ;[3045] GET FUNCTION CODE
	CAIE T3,.CMNUX		;A .CMNUX FUNCTION?
	JRST [	NOPARS NPXICN]	;NO, INVALID CHARACTER IN NUMBER
	MOVE T2,T1		;GET PNTR FROM NIN IN T2
	UMOVE T1,.CMABP(P2)	;AND GET ATOM BUFFER POINTER IN T1
	CALL SUBBP		;FIND NEG NUMBER OF BYTES ACTUALLY READ
	AOJ T1,			;DON'T INCLUDE THE TERMINATOR
	PUSH P,T1		;AND SAVE IT
	CALL CMFSET		;RESET ALL POINTERS
	POP P,T1		;AND GET BACK NUMBER OF BYTES READ BY NIN
	CALL CMRFLN		;AND REREAD THE FIELD UP TO TERM NIN SAW
	JRST XCMNX1		;NOW TRY NIN AGAIN.
;**;[7299] Add 7 lines at CMNMR1:+0L	MDR	23-MAY-86
;**;[7309] Insert 2 lines at CMNMR1:+0L	MDR	1-JUN-86
CMNMR1:	TXNE F,CM%ESC		;[7309] Did ESC terminate field?
	 JRST XCOMXR		;[7309] Yes, don't worry about CM%EOC
	CALL RDCRLF		;[7299] (/) Is this EOL?
;**;[7301] Fix typo at CMNMR1+1L	MDR	27-MAY-86
	IFNSK.			;[7299][7301] No
	 CALL CMDIP		;[7299] Replace last character read
	 JRST XCOMXR		;[7299] And return number in T2
	ENDIF.			;[7299]
	CALL UNCRLF		;[7299] (/) Reached EOL, CM%EOC lit, no unread CRLF
	JRST XCOMXR		;[7299] Continue with number in T2

;NUMBER BREAK SET, ALLOWS +, -, NUMBERS

NUMBRK:	BRMSK. -1,-1,-1,-1,<0123456789+-> ;START WITH ALL, REMOVE DIGITS, PLUS, AND MINUS

NUXBRK:	777777,,777760
	777654,,001760
	777777,,777760
	777777,,777760
CMNUMH:	CALL DOHLP		;DO USER SUPPLIED MESSAGE
	JXN F,CM%SDH,CMRTYP	;SUPPRESS DEFAULT HELP IF REQUESTED
	HRRZ T2,FNARG		;GET BASE
	CAIL T2,^D2		;LEGAL?
	CAILE T2,^D10
	ITERR COMNX8		;NO
	CAIN T2,^D10		;DECIMAL?
	JRST CMNH10		;YES
	CAIN T2,^D8		;OCTAL?
	JRST CMNH8		;YES
	HRROI T1,[ASCIZ / a number in base /]
	CALL CMSOUT		;ARBITRARY BASE
	XCTU [HRRZ T1,.CMIOJ(P2)]
	HRRZ T2,FNARG
	MOVEI T3,^D10
	NOUT			;TYPE BASE
	 ITERR (,<MOVE T1,LSTERR>) ;RETURN WITH PROPER ERROR CODE
	JRST CMRTYP		;RETYPE LINE AND CONTINUE

CMNH8:	HRROI T1,[ASCIZ / octal number/]
	JRST CMNH

CMNH10:	HRROI T1,[ASCIZ / decimal number/]
CMNH:	CALL CMSOUT
	JRST CMRTYP
;DATE AND/OR TIME
;FLAGS IN ARG SPECIFY WHICH

XCMTAD:	MOVE Q1,FNARG		;GET ARG
;**;[7325] Add 1 line at XCMTAD:+1L	MDR	20-JUN-86
	AOS TADCNT		;[7325] Count how many trips through here
	MOVEI T1,EOLBRK		;READ TO END OF LINE
	CALL CMRFLX		;SINCE WE REALLY DON'T KNOW HOW MUCH TIME AND DATE JSYS WILL READ
;**;[7325] Remove 1 line at XCMTAD:+6L	MDR	20-JUN-86
	UMOVE T1,T4		;GET USER'S AC4 WHICH JSYS'S WILL CLOBBER
	MOVEM T1,TDSAV4		;REMEMBER IT
	CALL CMTSET		;SET UP FOR AND DO DATE/TIME PARSING
	 JFCL			;FIRST PASS WE DON'T CARE WHETHER IT SUCCEEDS OR NOT
	UMOVE T1,T1
	MOVEM T1,DATPT		;REMEMBER HOW FAR WE READ
	UMOVE T2,.CMABP(P2)	;GET BEGINNING
	CALL SUBBP		;CALCULATE NUMBER OF CHARACTERS READ
	SOJ T1,			;DON'T INCLUDE THE TERMINATOR
;**;[7325] Remove 2 lines at XCMTAD:+16L	MDR	20-JUN-86
	MOVEM T1,DATPT		;REMEMBER HOW MANY CHARACTERS TO READ
	CALL CMFSET		;RESET TO BEGINNING OF FIELD
	MOVN T1,DATPT		;CMRFLN NEEDS NEGATIVE NUMBER OF CHARACTERS TO READ
	CALL CMRFLN		;READ EXACT NUMBER OF CHARACTERS COMPRISING TIME AND DATE FIELD
;**;[7325] Change 1 line at XCMTAD:+22L		MDR	20-JUN-86
	JXN F,CMQUES+CMQUE2,CMTADH	;[7325] Do help if needed (secondary help too)
	CALL CMTSET		;NO HELP REQUESTED, PARSE FOR REAL
	 JRST TDBAD		;FAILED
	TXNE Q1,CM%NCI		;CONVERT TO INTERNAL FORMAT?
	JRST [	MOVSI T1,T2	;NO, STORE DATA IN USER BLOCK
		HRR T1,Q1
		XBLTUU [BLT T1,2(Q1)]
		JRST TDGOOD]
	TXNN Q1,CM%IDA		;HAVE DATE?
	JRST [	SETO T2,	;NO, DEFAULT TO TODAY
		SETZ T4,
		ODCNV		;GET TODAY
		UMOVEM T2,T2	;SET UP FOR IDCNV
		UMOVEM T3,T3
		JRST .+1]
	IMCALL .IDCNV,MSEC1	;CONVERT TO INTERNAL
	 JRST TDBAD		;FAILED
TDGOOD:	MOVE T1,TDSAV4		;GET USER'S ORIGINAL AC4
	UMOVEM T1,T4		;RESTORE IT
	JRST XCOMXR		;GIVE GOOD RETURN

TDBAD:	MOVE T1,TDSAV4		;RESTORE USER;S AC4
	UMOVEM T1,T4
	JRST XCOMNP		;GIVE FAILURE RETURN


;ROUTINE THAT DOES DATE/TIME PARSING.  SKIPS IFF SUCCESFUL PARSE.

CMTSET:	UMOVE T1,.CMABP(P2)	;POINT TO ATOM BUFFER
	UMOVEM T1,T1
	MOVX T2,1B0+1B6		;SET UP FLAGS FOR IDTNC
	TXNE Q1,CM%IDA		;DATE WANTED?
	TXZ T2,1B0		;YES
	TXNE Q1,CM%ITM		;TIME WANTED?
	TXZ T2,1B6		;YES
	UMOVEM T2,T2
	IMCALL .IDTNC,MSEC1
	 RET			;IDTNC FAILED
	RETSKP			;SUCCEEDED

;TIME/DATE HELP

;**;[7325] Add 4 lines at CMTADH:+0L	MDR	20-JUN-86
CMTADH:	MOVE T1,TDSAV4		;[7325] Restore user's AC4
	UMOVEM T1,T4		;[7325]
	SKIPLE TADCNT		;[7325] Is this our first time through?
	JRST CMRTYP		;[7325] No, then don't give another help msg
	CALL DOHLP		;DO USER TEXT
	JXN F,CM%SDH,CMRTYP	;CHECK SUPPRESS DEFAULT
	LOAD T1,<CM%IDA+CM%ITM>,Q1 ;GET FLAGS
	HRRO T1,[[ASCIZ //]
		[ASCIZ / time/]
		[ASCIZ / date/]
		[ASCIZ / date and time/]](T1)
	CALL CMSOUT		;PRINT APPROPRIATE MESSAGE
	JRST CMRTYP
;DEVICE

XCMDEV:	CALL CMRFLD		;READ FIELD
;**;[7260] Change 1 line at XCMDEV+1L	MDR	11-MAR-86
	TXNE F,CMQUES!CMDEFF	;WANT SOMETHING SPECIAL? [7260] remove CM%NSF
				;[7260] to return correct error when a 0 length
				;[7260] device or logical appears.
	JRST CMDEVS		;YES - CHECK FOR HELP
	CALL ATMLEN		;GET LENGTH OF ATOM BUFFER
	JUMPE A,[NOPARS DEVX7]	;CATCH NULL DEVICE
;**;[7260] Add 2 lines at XCMDEV+5L	MDR	11-MAR-86
	TXNE F,CM%NSF		;[7260] Now check for no-suffix
	 JRST CMDEV1		;[7260] Continue processing (no : present)
	XCTBU [LDB T1,P4]	;MAKE SURE DEVICE ENDED WITH COLON
	CAIE T1,":"		;DEVICE?
	JRST [	NOPARS NPXIDT]	;NO, FAIL
CMDEV1:	TXNE F,CM%PO		;PARSE-ONLY REQUESTED?
	JRST CMDEV2		;YES, DON'T CHECK FOR EXISTENCE
	UMOVE T1,.CMABP(P2)	;SET UP STDEV ARGS
	UMOVEM T1,T1
	IMCALL .STDEV,MSEC1
	 JRST XCOMNP		;FAILED
CMDEV2:	JRST XCOMXI

CMDEVS:	TXNN F,CMQUES		;REALLY WANT HELP?
	JRST CMDEV1		;NO - FINISH OFF, IGNORING THE SUFFIX
	CALL DOHLP		;YES - DO USER HELP
	HRROI T1,[ASCIZ / device name/]
	TXNN F,CM%SDH		;SUPPRESS DEFAULT?
	CALL CMSOUT		;NO, DO IT
	JRST CMRTYP

;QUOTED STRING

XCMQST:	CALL CMRQST		;READ THE STRING
	 JRST [	NOPARS NPXNQS]	;FAILED
	JXN F,CMQUES,[CALL DOHLP ;DO USER HELP
		HRROI T1,[ASCIZ / quoted string/]
		TXNN F,CM%SDH	;DEFAULT HELP?
		CALL CMSOUT	;YES
		JRST CMRTYP]
	TXZ F,CM%ESC+CMCFF	;CLEAR IN CASE USED INSIDE STRING
	JRST FIXESC		;CHECK FOR ESCAPE AND RETURN
;UNQUOTED STRING - TAKES BIT MASK (4 WORDS * 32 BITS) TO SPECIFY BREAKS.
;**;[3022] At XCMUQS insert 6 lines  JMP  Sep 29, 83
XCMUQS:	JXE F,CMQUES,CMUQS1	;? BEEN TYPED ALREADY? 
	CALL DOHLP		;YES - DO USER HELP
	HRROI T1,[ASCIZ / unquoted string/]
	TXNN F,CM%SDH		;SUPPRESS DEFAULT?
	CALL CMSOUT		;NO, DO IT
	JRST CMRTYP

CMUQS1:	CALL CMCIN		;GET A CHAR
	MOVE T2,T1		;COPY CHAR
	IDIVI T2,^D32		;COMPUTE INDEX TO BIT ARRAY
	MOVE T3,BITS(T3)
	ADD T2,FNARG
	XCTU [TDNN T3,0(T2)]	;BIT ON?
	JRST CMUQS1		;NO, KEEP GOING
	CAIN T1,CMHLPC		;TERMINATED WITH HELP CHAR?
	JRST [	CALL DOHLP	;YES, DO USER HELP
		JRST CMRTYP]	;AND RETYPE LINE
	TXZ F,CM%ESC+CMCFF	;CLEAR FLAGS
	CALL CMCINT		;SEE IF ESCAPE OR ^F TYPED
;**;[3033] At CMUQS1 + 12 L Replace one line with 8 lines  JMP  Oct 24 83
	TXNN F,CMCFF		;GOT ^F ?
	JRST FIXES1		;NO - TERMINATE NORMALLY
	CALL CMDCH		;YES, FLUSH IT
	TXO F,CM%ESC		;SET FLAG
	MOVEI T1," "		;TERMINATE TYPESCRIPT WITH SPACE
	CALL CMDIB
	CALL CMDIP		;DON'T REALLY PARSE THE SPACE UNTIL NEXT FIELD
	JRST XCOMX2		;FINISH UP

;ARBITRARY FIELD

XCMFLD:	CALL CMRFLD		;READ FIELD
	TXNE F,CMQUES		;"?" SEEN?
	JRST [	CALL DOHLP	;YES, DO USER MESSAGE
		JRST CMRTYP]
	JRST XCOMXR		;LEAVE FIELD IN ATOM BUFFER
;ACCOUNT

XCMACT:	CALL CMRFLD		;READ FIELD
	TXNE F,CMQUES		;"?" SEEN?
	JRST [	CALL DOHLP	;YES, DO USER MESSAGE
		JRST CMRTYP]
	CALL ATMLEN		;MEASURE LENGTH OF ACCOUNT STRING
	CAILE A,MAXLC		;SHORT ENOUGH?
	JRST [NOPARS VACCX1]	;NO "ACCOUNT MORE THAN 39 CHARACTERS"
	JRST XCOMXR		;YES, SUCCESS
;NODE NAME

XCMNOD:	CALL CMRFLD		;READ INPUT
	TXNE F,CMQUES!CMDEFF!CM%NSF ;WANT SOMETHING SPECIAL?
	JRST NODSPC		;YES - CHECK FOR HELP OR NO-SUFFIX
	MOVNI T1,1		;BACK UP POINTER TO CHECK FOR COLONS
	ADJBP T1,P4
	XCTBU [LDB T2,T1]	;READ FIRST COLON
	XCTBU [ILDB T1,T1]	;READ SECOND COLON
	CAIN T1,":"		;ERROR IF EITHER CHARACTER ISN'T COLON
	CAIE T2,":"
	JRST [	NOPARS NPX2CL]	;NO, ERROR
NOD1:	UMOVE A,.CMABP(P2)	;POINT AT THE ATOM BUFFER
	MOVE B,A		;GET A COPY
	XCTBU [ILDB D,B]	;GET FIRST CHARACTER
	JUMPE D,[NOPARS COMX20] ;FAIL IF NULL NAME
	MOVEI B,CNODE		;GET PARSED NODE NAME IN CNODE
	CALL PARNDU		;CHECK NODE NAME IN ATOM BUFFER
	 JRST XCOMNE		;FAILED, REASON IN A
	TXNE F,CM%PO		;PARSE ONLY?
	JRST NOD2		;YES, GIVE GOOD RETURN NOW
	DMOVE A,[.NDVFY
		 C]		;PREPARE TO VALIDATE NODE NAME
	HRROI C,CNODE		;POINT TO NAME BEING VALIDATED
	NODE			;VERIFY THE NAME
	TXNN D,ND%EXM		;EXACT MATCH?
	JRST [NOPARS DCNX13]	;NODE NOT ACCESSIBLE
NOD2:	JRST XCOMXI		;CHECK FOR TRAILING ESCAPE AND RETURN

NODSPC:	TXNN F,CMQUES		;REALLY WANT HELP?
	JRST NOD1		;NO - FINISH OFF, IGNORING THE SUFFIX
	CALL DOHLP		;YES - DO USER'S SPECIAL HELP
	HRROI T1,[ASCIZ/ Node Name/] ;SET UP DEFAULT HELP
	TXNN F,CM%SDH		;DOES USER NOT WANT IT
	CALL CMSOUT		;NO, TYPE IT
	JRST CMRTYP		;AND RETYPE COMMAND

;ROUTINE TO PARSE A NODE NAME IN USER SPACE.  IN ORDER TO PREVENT SLY
;PROGRAMS FROM MANAGING TO CHANGE THE STRING AFTER PARNOD HAS BEEN CALLED BUT
;BEFORE THE STRING IS COPIED INTO MONITOR SPACE, CALLERS MUST SUPPLY THIS
;ROUTINE WITH A MONITOR SPACE ADDRESS INTO WHICH TO WRITE THE PARSED STRING
;YOU MUST BE SURE THAT YOUR BUFFER AS SPECIFIED IN B IS LARGE ENOUGH FOR THE
;LONGEST LEGAL NODE NAME
;ACCEPTS:	A/	POINTER TO ASCIZ NODE NAME IN USER SPACE
;		B/	BUFFER ADDRESS FOR RECEIVING PARSED NAME
;RETURNS:	+1	PARSE ERROR, ERROR CODE IN A
;		+2	SUCCESSFUL PARSE, NODE NAME COPIED TO BUFFER
;		A/	UPDATED USER BYTE POINTER
;		B/	LENGTH OF NAME

PARNDU::STKVAR <UUP,MB>
	MOVEM B,MB		;REMEMBER ADDRESS OF MONITOR BUFFER
	EXCH A,B		;USER POINTER IN B, BUFFER ADDRESS IN A
	SOJ A,			;CPYFU2 WANTS ADDRESS BEFORE THE STRING
	MOVEI C,1+CPN		;LEAVE ROOM FOR LONG NODE NAME PLUS A NULL
	CALL CPYFU2		;COPY NODE NAME TO BUFFER, RAISE LOWER CASE
	 NOP			;CPYFU2 ALWAYS RETURNS +2
	MOVEM C,UUP		;REMEMBER UPDATED USER POINTER
	MOVE A,MB		;GET POINTER TO MONITOR BUFFER
	HRLI A,440700		;MAKE REAL BYTE POINTER
	CALL PARNOD		;PARSE THE NODE NAME IN MONITOR SPACE
	 RET			;FAILED, REASON IN A
	MOVE B,A		;RETURN LENGTH IN B
	MOVE A,UUP		;SUCCEEDED, SKIP WITH UPDATED USER POINTER IN A
	RETSKP			;SUCCESSFUL


;PARSE A NODE NAME IN MONITOR SPACE.  TAKES ASCIZ POINTER IN A, SKIPS IF
;SUCCESSFUL, NON-SKIP WITH ERROR IN A IF FAILS.  IF SUCCESSFUL, RETURNS LENGTH
;IN A.  THE NODE NAME MUST CONSIST OF 6 OR LESS ALPHANUMERIC CHARACTERS,
;AT LEAST ONE OF WHICH MUST BE ALPHABETIC.
;
;PARNO1 IS A SPECIAL ENTRY POINT IF YOU ALREADY KNOW THE NUMBER OF CHARACTERS
;IN THE NAME BEING PARSED AND THE STRING DOES NOT END IN A NULL.  2/ THE COUNT

PARNOD:	SKIPA T4,[0]		;"ASCIZ" ENTRY POINT
PARNO1::SKIPA T4,[-1]		;"NOT ASCIZ" ENTRY POINT
	MOVEI T2,CPN		;GET MAXIMUM NUMBER OF CHARACTERS IN NAME
	SAVEAC <P6>
	SETZM P6		;INIT THE "FOUND ALPHA CHAR" FLAG
XNOD0:	ILDB C,A		;GET NEXT CHARACTER FROM NODE NAME
	JUMPE C,XNOD1		;IF NULL, DONE
	CALL XNODAL		;IS IT ALPHABETIC?
	 JRST [CALL XNODNM	;NO, HOW ABOUT NUMERIC?
	        RETBAD (COMX18)	;NO, ERROR - INVALID CHAR IN NODE NAME
	       JRST .+1]	;YES, IS GOOD
	SOJG T2,XNOD0		;DECR CHAR. COUNT - IF MORE, GET THE NEXT
	JUMPL T2,[RETBAD (COMX19)]  ;IF NEGATIVE, ERROR - TOO MANY CHARS.
	JUMPGE T4,XNOD0		;CHAR. COUNT IS 0 - IF ASCIZ, LOOP FOR THE NULL

;HERE WHEN PARSING IS DONE

XNOD1:	SKIPN P6		;DID WE FIND AN ALPHA CHAR?
	RETBAD (COMX21)		;NO, GIVE ERROR
	MOVEI A,CPN		;GET MAX LENGTH OF A NODE NAME
	SUB A,B			;SUBTRACT COUNTDOWN TO GET REAL LENGTH
	RETSKP			;RETURN SUCCESS


;LOCAL ROUTINE TO TEST FOR ALPHABETIC CHARACTER

XNODAL:	CAIL T3,"A"		;IS IT
	CAILE T3,"Z"		; ALPHABETIC?
	RET			;NO
	SETOM P6		;YES, SET THE "FOUND ALPHA" FLAG
	RETSKP			;IS ALPHA


;LOCAL ROUTINE TO TEST FOR NUMERIC CHARACTER

XNODNM:	CAIL T3,"0"		;IS IT
	CAILE T3,"9"		; NUMERIC?
	RET			;NO
	RETSKP			;YES
;INDIRECT FILESPEC (INTERNAL CALL)

CMATFI:	TXO F,CMINDF		;NOTE GETTING INDIRECT FILE
	JRST XCMIFI		;OTHERWISE, LIKE INPUT FILE

;FILESPEC

XCMFIL:	XCTU [HRRZ Q1,.CMGJB(P2)] ;GENERAL - GET GTJFN ARG BLOCK ADR
	UMOVE T1,.GJGEN(Q1)	;GET FLAGS FROM IT
	JRST CMFIL0		;DO COMMON CODE

XCMOFI:	SKIPA T1,[GJ%FOU+GJ%MSG] ;OUTPUT FILE
XCMIFI:	MOVX T1,GJ%OLD		;INPUT FILE
	XCTU [HRRZ Q1,.CMGJB(P2)] ;GET GTJFN ARG BLOCK ADR
	MOVEI T2,.GJDEV+1(Q1)	;CLEAR DEFAULT POINTERS
	XCTU [SETZM -1(T2)]
	HRLI T2,.GJDEV(Q1)
	XBLTUU [BLT T2,.GJJFN(Q1)]
CMFIL0:	TXZ T1,GJ%CFM		;DON'T LET GTJFN DO ITS OWN CONFIRMATION
	TXO T1,GJ%XTN		;NOTE EXTENDED GTJFN ARG BLOCK
	UMOVEM T1,.GJGEN(Q1)	;PUT FLAGS IN ARG BLOCK
	CALL CMCIN		;READ FIRST CHARACTER
	CAIE T1,.CHESC
	CAIN T1,CMFREC		;RECOGNITION REQUESTED AT BEG OF FIELD?
	JRST CMFIL1		;YES, DON'T CALL CMRFLD BECAUSE IT WOULD DING AND WAIT
	CALL CMDIP		;PUT THE PREREAD CHARACTER BACK
	TXNE F,CMINDF		;READING INDIRECT SPEC?
	JRST [	MOVEI T1,FILBRK	;YES, FORCE FILE SPEC BREAK MASK
		CALL CMRFLX
		JRST CMFIL3]
	CALL CMRFLD		;READ FILESPEC
CMFIL3:	TXNE F,CMQUES		;DID USE TYPE "?" IN FILESPEC?
	JRST CMFHLP		;YES
	CALL ATMLEN		;GET LENGTH OF FILESPEC SO FAR
	MOVEM T1,FSLEN
	CALL CMRSET		;BACKUP POINTERS TO LET GTJFN READ FILESPEC
	CALL INILCH		;SKIP LEADING SPACES (CAN'T CALL CMFSET BECAUSE WE NEED CM%ESC)
	TXNE F,CMINDF		;READING INDIRECT FILESPEC ?
	CALL CMCIN		;YES, READ THE "@"
	JRST CMFIL2		;SKIP OVER THE OTHER "PUTTING BACK"
CMFIL1:	CALL CMDIP		;PUT BACK THE ESCAPE OR ^F
	TXO Z,CM%ESC		;BUT REMEMBER THAT USER DOING RECOGNITION
CMFIL2:	TXNE F,CMDEFF		;DEFAULT STRING?
	JRST [	UMOVE T2,.CMABP(P2) ;YES, GET ATM BUF PNTR
		UMOVEM T2,T2	;GIVE TO USER
		CALL ATMLEN	;FIND LENGTH OF ATOM BUFFER
		MOVE T2,ATBSIZ
		SUB T2,T1	;SUBTRACT WHAT'S THERE ALREADY
		MOVEM T2,ATBSIZ	;UPDATE BUFFER SIZE LEFT
		ADJBP T1,ATBPTR	;ADJUST POINTER TO PNT TO END OF BUFFER
		MOVEM T1,ATBPTR
		MOVEI T1,.CHCRT	;SET UP TO PUT <CR> IN BUFFER
		CALL STOLCH	;DO IT
		MOVEI T1,.CHLFD	;SET UP TO PUT <LF> IN BUFFER
		CALL STOLCH
		CALL INILC1	;REINITIALIZE PNTR & COUNT
		JRST .+2]

	UMOVEM P4,T2		;NO DEFAULT, PUT MAIN PNTR IN T2
	UMOVE T1,.CMIOJ(P2)	;SET UP IO JFNS (INPUT NOT USED)
	UMOVEM T1,.GJSRC(Q1)
	UMOVE T1,.GJF2(Q1)	;DON'T WIPE OUT OTHER EXTENDED FLAGS
	TXO T1,<G1%RND+G1%RBF+G1%RCM+G1%RIE+3> ;SET UP SECOND FLAG AND COUNT WORD
	UMOVEM T1,.GJF2(Q1)
	UMOVE T1,.CMABP(P2)	;SET ATOM BUFFER TO GET COPY
	UMOVEM T1,.GJCPP(Q1)	; OF FILESPEC
	UMOVE T1,.CMABC(P2)
	UMOVEM T1,.GJCPC(Q1)
	UMOVE T1,.CMBFP(P2)	;SET UP ^R PTR
	UMOVEM T1,.GJRTY(Q1)
	UMOVEM Q1,T1		;SET UP T1, T2 ARGS

	; ..
;ALL DATA NOW SETUP FOR GTJFN - DATA IS IN BLOCK IN PREVIOUS CONTEXT.
;WILL DO INTERNAL CALL TO GTJFN SO PREVIOUS CONTEXT IS NOT CHANGED.
;IF MORE INPUT IS NEEDED, GTJFN WILL RETURN WITH GJFX48.
;ON ANY RETURN, STRING PROCESSED BY GTJFN (WHICH MAY INCLUDE SOME
;RECOGNITION OUTPUT) IS IN ATOM BUFFER AND WILL BE COPIED TO
;MAIN BUFFER.

	; ..
	MOVEI Q2,0		;NO GTJFN ERROR YET
	IMCALL .GTJFN,MSEC1	;DO INTERNAL CALL TO GTJFN
	 JRST CMGJE		;FAILED
	UMOVEM T1,T2		;RETURN JFN TO CALLER
;**;[3150]  Replace 1 line with 3 lines at CMGJE - 6L  JMP   Aug 22 84
	TXNE F,CMDEFF		;[3150] GOT FIELD BY DEFAULT ?
	TXNE F,CM%ESC		;[3150] YES - GOT IT BY RECOGNITION ?
	CALL CMGJC		;[3150] YES - COPY INPUT TO MAIN BUFFER
	TXNE F,CM%ESC		;RECOG CHARACTER TERMINATED?
	CALL CMDCH		;YES, FLUSH IT
	CALL ESCSPC		;TYPE SPACE IF FILESPEC RECOGNIZED WITH ESCAPE
	JXO F,CMINDF,RSKP	;RETURN NOW IF INDIRECT FILESPEC
	JRST XCOMX2		;EXIT GOOD

CMGJE:	MOVEM T1,Q2		;SAVE ERROR CODE
	CALL CMGJC		;GET USER INPUT
	CAIN Q2,GJFX48		;MORE INPUT NEEDED?
	JRST [	TXNE F,CM%ESC	;YES, FLUSH ESC IF NECESSARY
		CALL CMDCH
		JRST XCOMRF]	;GET MORE INPUT AND TRY AGAIN
	JXO F,CMINDF,R		;RETURN FAIL IF INDIRECT FILESPEC
	JRST XCOMNP		;YES, RETURN FAILURE

CMGJC:	UMOVE T4,.CMABP(P2)	;SUCCESS, GET PTR TO FILESPEC
CMGJ1:	XCTBU [ILDB T1,T4]	;COPY FILESPEC TO MAIN BUFFER
	JUMPN T1,[SOSGE P3
		ITERR COMNX3
		XCTBU [IDPB T1,P4]
		SOS P5		;COUNT DOWN ADVANCE BYTES
		CALL STOLCH	;PUT CHAR IN ATOM BFR & UPDATE VARIABLES
		JRST CMGJ1]
	CAIE Q2,GJFX48		;THIS ERROR MEANS NO TERMINATOR IN ATOM BUFFER
	TXNE Z,CM%ESC		;ESCAPE MEANS USER DIDN'T TYPE TERMINATOR
	CAIA			;USER DIDN'T TYPE TERMINATOR
	JRST [	CALL ATMLEN	;GET LENGTH OF ATOM BUFFER
		SUB T1,FSLEN	;CALCULATE LENGTH OF TERMINATOR (MIGHT BE 2 FOR CRLF!)
		MOVE Q3,T1	;REMEMBER IN Q2
		JRST CMGJ2]	;GO REMOVE TERMINATOR FROM ATOM BUFFER
	MOVEI Q3,1		;NOTE THAT ONE CHARACTER TO REMOVE
CMGJ2:	SKIPGE P5		;ANYTHING LEFT IN INPUT?
	SETZ P5,		;NO, MAKE EXACTLY EMPTY
	CAIN P5,0		;ANY UNPARSED INPUT LEFT AFTER FILESPEC?
	CALL TIECMD		;NO, END COMMAND STRING WITH NULL
	MOVE T1,Q3		;GET NUMBER OF CHARACTERS TO REMOVE
	CALL SHRINK		;SHRINK THE ATOM BUFFER TO REMOVE TERMINATOR
CMGJ3:	CALL CMDIP		;DONE, PUT TERMINATOR BACK
	SOJG Q3,CMGJ3		;LOOP FOR ALL OF TERMINATOR
	CAIN Q2,GJFX48		;IS THERE A TERMINATOR TO REMOVE?
	RET			;NO, SO AVOID SECOND BEEP
	MOVEI T1,FLDBRK
	CALLRET CMRFLX		;READ NULL ATOM TO HANDLE TERMINATOR
;FILESPEC HELP

CMFHLP:	JXO F,CMINDF,[HRROI T1,[ASCIZ / filespec of indirect file/]
		JRST CMFH1]	;SPECIAL HELP IF INDIRECT FILESPEC
	CALL DOHLP		;DO USER MESSAGE
	JXN F,CM%SDH,CMRTYP	;SUPPRESS DEFAULT HELP IF REQUESTED
	UMOVE T2,.GJGEN(Q1)	;GET GTJFN FLAGS
	HRROI T1,[ASCIZ / output filespec/]
	TXNN T2,GJ%OLD
	TXNN T2,GJ%FOU
	HRROI T1,[ASCIZ / input filespec/]
CMFH1:	CALL CMSOUT
	JRST CMRTYP

;TOKEN - ARBITRARY SYMBOL AS SPECIFIED BY FN DATA

XCMTOK:	MOVE T1,FNARG		;GET STRING ADDRESS
	CALL CHKBP		;CHECK IT
	 ITERR COMX17		;BAD
	MOVEM T1,Q1

;**;[3148] Add 18 lines at XCMTOK + 3	JMP 16-Aug-84

	TXNN F,CM%DPP		;[3148] GOT A DEFAULT ?
	 JRST CMTOK1		;[3148] NO
	CALL RDCRLF		;[3148] SEE IF CRLF FOR DEFAULTING ? 
	 JRST [CALL CMDIP	;[3148] NO - PUT CHAR BACK
	       JRST CMTOK1]	;[3148] CONTINUE NORMAL PROCESSING
	CALL UNCRLF		;[3148] BACK UP
	MOVE Q2,Q1		;[3148] SAVE ARG POINTER, CMGDP CLOBBERS Q1
	CALL CMGDP		;[3148] GET DEFAULT STRING POINTER
	TXO F,CMDEFF		;[3148] NOTE DEFAULT SHOULD BE TAKEN
XCMTK1:	XCTBU [ILDB T1,Q2]	;[3148] GET NEXT CHARACTER FROM TOKEN
	JUMPE T1,[CALL TIELCH	;[3148] DONE ON NULL. TIE IT OFF
		  JRST XCOMX2]	;[3148] FINISH UP
	XCTBU [ILDB T2,Q1]	;[3148] GET CHAR FROM DEFAULT STRING
	CAME T2,T1		;[3148] MATCH ?
	 JRST [NOPARS NPXNMT]	;[3148] NO. NO MATCH TOKEN
	CALL STOLCH		;[3148] STORE IN ATOM BUFFER ONLY
	JRST XCMTK1		;[3148] NEXT CHAR

CMTOK1:	XCTBU [ILDB Q2,Q1]	;GET NEXT CHAR IN STRING
	JUMPE Q2,[CALL TIELCH	;SUCCESS IF END OF STRING
		JRST FIXESC]	;CHECK FOR TRAILING ESCAPE AND RETURN
CMTOK2:	CALL CMCIN		;NO, GET NEXT CHAR OF INPUT
	CAMN T1,Q2		;MATCH?
	JRST [	CALL STOLCH	;YES, APPEND TO ATOM BUFFER
		JRST CMTOK1]	;CONTINUE
	CAIE T1,CMFREC		;RECOG REQUEST?
	CAIN T1,.CHESC
	 CALL CMAMBT		;AMBIGUOUS
	CAIE T1,CMHLPC		;HELP REQUEST?
;**;[2852] Change 1 line at CMTOK2:+8.L	PED	3-NOV-82
	JRST [	NOPARS NPXNMT]	;[2852] NO - NO MATCH OF TOKEN
	CALL DOHLP		;YES - GIVE THE HELP
	JXN F,CM%SDH,CMRTYP
	HRROI T1,[ASCIZ/ "/]
	CALL CMSOUT
	MOVE T1,FNARG
	CALL CMUSOU
	MOVEI T1,""""
	CALL CMCOUT
	JRST CMRTYP
;DIRECTORY OR USER NAME

XCMUSR:	TXOA F,CMUSRF		;NOTE USER REQUIRED
XCMDIR:	TXZ F,CMUSRF
CMDIR1:	CALL CMRFLD		;READ FIELD
;**;[7413] Add 8 Lines at CMDIR1:+1L	MDR	22-JAN-87
	CAIE T1,COMNX4		;[7413] Illegal character seen?
	IFSKP.			;[7413] Yes
	  MOVE T1,COMX22	;[7413] Say illegal character in directory
	  TXNE F,CMUSRF		;[7413] User or directory?
	  MOVE T1,COMX23	;[7413] User, change the error
	  MOVEM T1,LSTERR	;[7413] Note last error and...
	  JRST XCOMNP		;[7413] ...back to caller
	ENDIF.			;[7413]
;**;[7413] Remove label CMDIR4:	MDR	22-JAN-87
	TXNE F,CMQUES!CM%ESC	;[7413] Help or recognition wanted?
	JRST CMDIRS		;YES - SEE WHICH ONE AND HANDLE IT
	CALL CMDEMO		;NO RECOGNITION - SET FOR EXACT MATCH
CMDIR0:	TXNE F,CMUSRF		;WANT A USER NAME?
;**;[7413] Replace 5 lines with 7 lines at CMDIR0:+1L	MDR	22-JAN-87
	IFNSK.			;[7413]
	  IMCALL .RCUSR,MSEC1	;[7413] Yes, get a username
	   ERJMP XCOMNP		;[7413] Illegal syntax
	ELSE.			;[7413]
	  IMCALL .RCDIR,MSEC1	;[7413] No, get a directory name
	   ERJMP XCOMNP		;[7413] Illegal syntax
	ENDIF.			;[7413]
;**;[7413] Remove label CMDIR3:	MDR	23-JAN-87
	MOVEM T1,RCFLGS		;[7413] Remember flags. We might have to ding later
	TXNE T1,RC%NOM		;FOUND A MATCH?
	JRST CMDIR5		;NO MATCH, BUT MAYBE PARSE-ONLY REQUESTED
	UMOVEM T3,2		;RETURN THE NUMBER TO THE USER
CMDIR9:	TXNE F,CM%ESC		;DID USER END INPUT WITH ESCAPE?
	CALL CMDCH		;YES, REMOVE IT FROM BUFFER
CMDIR2:	XCTBU [ILDB T1,ATBPTR]	;TYPE AND APPEND REMAINDER OF NAME
	JUMPE T1,CMDIR7		;DONE WHEN NULL CHAR
	CALL CMDIB
	JRST CMDIR2
CMDIR7:	MOVE T1,RCFLGS		;GET RESULT FLAGS FROM RCDIR
	TXNN T1,RC%AMB		;WAS INPUT AMBIGUOUS?
	JRST XCOMXI		;NO, GIVE SUCCESSFUL RETURN
	JRST CMAMB		;YES, RING BELL

;DIRECTORY/USER HELP

CMDIRS:	TXNN F,CMQUES		;HELP?
	JRST CMDIRR		;NO - CM%ESC IS SET - ALLOW RECOGNITION
	CALL DOHLP		;DO USER HELP
	JXN F,CM%SDH,CMRTYP	;SUPPRESS DEFAULT HELP IF REQUESTED
	HRROI T1,[ASCIZ / user name/]
	TXNN F,CMUSRF		;USER?
	HRROI T1,[ASCIZ / directory name/]
	CALL CMSOUT
	JRST CMRTYP		;RETYPE AND CONTINUE

CMDIRR:	CALL CMDREC		;SET UP TO ALLOW RECOGNITION
	JRST CMDIR0		;BACK TO THE FLOW

;WE GOT A NO-MATCH RETURN ON TRYING TO PARSE USER OR DIRECTORY
;NAME.  THIS MAY BE FOR ONE OF TWO REASONS:  EITHER THE USER TYPED
;A PARTIAL NAME AND TRYED TO DO RECOGNITION, OR THE USER TYPED A
;COMPLETE NONEXISTENT NAME.  IF CALL REQUESTED PARSE-ONLY, COMPLETE
;NONEXISTENT NAME IS ACCEPTABLE AND WE WANT TO GIVE GOOD RETURN TO
;COMND CALL.  IF CALL REQUESTED NOT PARSE-ONLY, NONEXISTENT NAME IS
;UNACCEPTABLE, AND WE WANT TO GIVE NO-PARSE RETURN.  IF CALL WAS FOR
;NOT PARSE-ONLY, PARTIAL NAME IS NO GOOD AND WE WANT TO
;GIVE NO-PARSE RETURN.  IF CALL WAS FOR PARSE-ONLY, THEN PARTIAL NAME
;WARRANTS AMBIGUOUS RETURN, I.E. DING AND WAIT FOR MORE.
;THE FOLLOWING CODE DECIDES WHICH OF THE ABOVE CASES WE'RE DEALING
;WITH...

CMDIR5:	TXNN F,CM%PO		;PARSE-ONLY REQUESTED?
	JRST [	NOPARS NPXNMD]	;NO, SO GIVE NO-PARSE NOW
	CALL CMDEMO		;EXACT MATCH ONLY SET UP THIS TIME
	TXNE F,CMUSRF		;USER NAME FUNCTION?
	JRST CMDIR8		;YES, GO DO RCUSR
	IMCALL .RCDIR,MSEC1	;DIRECTORY FUNCTION
	 ERJMP CMDIR6		;USER ATTEMPTED RECOGNITION ON PARTIAL STRING
	JRST CMDIR9		;STRING IS GOOD SYNTAX
CMDIR8:	IMCALL .RCUSR,MSEC1
	 ERJMP CMDIR6
	JRST CMDIR9

;GET TO HERE WHEN PARSE-ONLY REQUESTED, AND USER TYPED PARTIAL NAME
;FOLLOWED BY ALTMODE.  WE'LL REGARD THIS AS AMBIGUOUS.

CMDIR6:	MOVX A,RC%AMB		;PRETEND AMBIGUOUS
	IORM A,RCFLGS
	JRST CMDIR9		;GO BACK AND JOIN COMMON CODE

;ROUTINE TO SET UP ARGS FOR IMCALL TO RCDIR/RCUSR.  ENTRIES ARE CMDREC
;FOR RECOGNITION, AND CMDEMO FOR NO RECOGNITION.

CMDEMO:	MOVX T1,RC%EMO+RC%PAR	;EXACT MATCH ONLY
	CAIA			;SKIP SET UP FOR RECOGNITION
CMDREC:	MOVX T1,RC%PAR		;RECOGNITION REQUESTED
	MOVE T2,FNARG		;GET ARGUMENT WORD
	TXNE T2,CM%DWC		;DIRECTORY WILDCARDING ALLOWED?
	TXO T1,RC%AWL		;YES (ASSUMES RCUSR DOESN'T CARE!)
	UMOVE T2,.CMABP(P2)	;PTR TO TYPE-IN
	UMOVEM T1,T1
	UMOVEM T2,T2
	RET
;COMMA, ARBITRARY CHARACTER

XCMCMA:	MOVEI T1,","		;SET UP COMMA AS CHARACTER TO FIND
	MOVEM T1,FNARG
CMCHR:	CALL CMCIN		;GET A CHAR
	CAIE T1,.CHTAB		;BLANK?
	CAIN T1," "
	JRST CMCHR		;YES, IGNORE
	HRRZ T2,FNARG		;GET SPECIFIED CHAR
	CAMN T1,T2		;THE RIGHT ONE?
	JRST CMCHR1		;YES, WIN
	CAIE T1,CMFREC		;^F?
	CAIN T1,.CHESC		;ESC?
	 CALL CMAMBT		;AMBIGUOUS
	CAIN T1,CMHLPC		;HELP?
	JRST [	CALL DOHLP
		JXN F,CM%SDH,CMRTYP ;JUMP IF SUPPRESSING HELP
		MOVEI T1," "	;TYPE SPACE
		CALL CMCOUT
		MOVEI T1,""""	;TYPE "char"
		CALL CMCOUT
		HRRZ T1,FNARG
		CALL CMCOUT
		MOVEI T1,""""
		CALL CMCOUT
		JRST CMRTYP]
	NOPARS NPXCMA		;FAIL

CMCHR1:	CALL CMCIN		;GET NEXT CHARACTER
	CAIE T1,.CHESC		;CHECK FOR ESCAPE
	JRST [	CALL CMDIP	;NOT AN ESCAPE, PLACE IT BACK
		JRST XCOMXI]	;AND GIVE SUCCESSFUL RETURN
	CALL CMDCH		;IS AN ESCAPE, REMOVE IT
	JRST XCOMXI		;AND GIVE SUCCESS RETURN
;LOCAL ROUTINE TO SET UP BYTE PTR TO TABLE STRING AND GET FLAGS
; T2/ ADDRESS OF STRING
;	CALL CHKTBS
; T1/ FLAGS
; T2/ BYTE POINTER TO STRING

CHKTBS:	XCTU [SKIPE T1,0(T2)]	;CHECK FIRST WORD OF STRING
	TXNE T1,177B6		;FIRST CHAR 0 AND WORD NOT ALL-0?
	TDZA T1,T1		;NO, MAKE FLAGS ALL 0
	AOS T2			;YES, HAVE FLAGS, ADJUST BYTE PTR
	HRLI T2,(POINT 7,0)	;SET UP P AND S FIELDS
	RET
;STRING COMPARE JSYS
; T1/ TEST STRING POINTER
; T2/ BASE STRING POINTER
;	STCMP
; RETURNS +1 ALWAYS,
;  T1/ COMPARE CODE:
;	1B0 (SC%LSS) - TEST STRING LESS THAN BASE STRING
;	1B1 (SC%SUB) - TEST STRING SUBSET OF BASE STRING
;	1B2 (SC%GTR) - TEST STRING GREATER THAN BASE STRING
;	N.O.T.A. MEANS EXACT MATCH
;  T2/ UPDATED BASE STRING POINTER, USEFUL IN CASE TEST STRING
;	WAS SUBSET

.STCMP::MCENT
	HLRZ T3,T1
	CAIN T3,-1
	HRLI T1,(POINT 7,0)
	HLRZ T3,T2
	CAIN T3,-1
	HRLI T2,(POINT 7,0)
	CALL USTCMP		;DO THE WORK
	UMOVEM T1,T1		;RETURN THE RESULT
	UMOVEM T2,T2
	MRETNG

;STRING COMPARE ROUTINE - REFERENCES PREVIOUS CONTEXT.
; T1/ TEST STRING POINTER
; T2/ BASE STRING POINTER
;	CALL USTCMP
;RETURN AS FOR .STCMP

USTCMP::XCTBU [ILDB T3,T1]	;GET NEXT BYTE FROM EACH STRING
	CAIL T3,"A"+40		;LC LETTER?
	JRST [	CAIG T3,"Z"+40
		SUBI T3,40	;YES, CONVERT TO UC
		JRST .+1]
	XCTBU [ILDB T4,T2]
	CAIL T4,"A"+40		;LC LETTER?
	JRST [	CAIG T4,"Z"+40
		SUBI T4,40	;YES, CONVERT TO UC
		JRST .+1]
	CAME T3,T4		;STILL EQUAL?
	JRST STRC2		;NO, GO SEE WHY
	JUMPN T3,USTCMP		;KEEP GOING IF NOT END OF STRING
	SETZ T1,		;STRINGS ENDED TOGETHER, EXACT MATCH.
	RET			;RETURN 0

STRC2:	JUMPE T3,[MOVX T1,SC%SUB ;TEST STRING ENDED, IS A SUBSET
		ADD T2,[7B5]	;DECREMENT BASE POINTER ONE BYTE
		RET]
	CAMG T3,T4		;STRINGS UNEQUAL
	SKIPA T1,[SC%LSS]	;TEST STRING LESS
	MOVX T1,SC%GTR		;TEST STRING GREATER
	RET
;KEYWORD TABLE ROUTINES.

;THESE ROUTINES PERFORM FUNCTIONS ON KEYWORD TABLES IN STANDARD
;FORMAT.  A KEYWORD TABLE IS ONE DESIGNED TO ALLOW ABBREVIATION
;RECOGNITION AND COMPLETION FOLLOWING THE USUAL CONVENTIONS.

;THE TABLE FORMAT IS:

;	TABLE:	# OF ENTRIES IN USE, MAX SIZE OF TABLE
;		XWD ADR OF STRING, ANYTHING
;		 ..
;		 ..

;THE TABLE MUST BE SORTED BY STRINGS SO THAT BINARY SEARCHING
;AND AMBIGUITY DETERMINATION MAY BE DONE EFFICIENTLY.

;THE RIGHT HALF OF EACH ENTRY CAN BE THE DATA FOR THE ENTRY OR
;A POINTER TO ADDITIONAL INFORMATION.  THESE ROUTINES IGNORE IT.

;**************************************************************

;TBDEL - DELETE AN ENTRY FROM STANDARD KEYWORD TABLE
; T1/ ADDRESS OF TABLE HEADER WORD
; T2/ ADDRESS OF ENTRY TO BE DELETED (AS RETURNED BY LOOKUP)
;	TDEL
; RETURN +1 ALWAYS, ITRAP IF TABLE EMPTY

.TBDEL::MCENT
	CALL XTDEL		;DO THE WORK
	 ITERR ()
	MRETNG

;THIS IS THE WORKER ROUTINE.  IT MAY BE CALLED INTERNALLY, AND
;IT REFERENCES PREVIOUS CONTEXT FOR ALL ARGUMENT DATA.
; RETURNS +1 FAILURE, ERROR CODE IN T1
; RETURNS +2 SUCCESS

XTDEL::	XCTU [HLRZ T4,0(T1)]	;GET USED COUNT
	MOVE T3,T4
	SOSGE T3		;REDUCE COUNT, TABLE ALREADY EMPTY?
	RETBAD TDELX1		;YES
	ADD T4,T1		;COMPUTE END OF TABLE
	CAILE T2,(T1)
	CAMLE T2,T4		;DELETED ENTRY WITHIN TABLE?
	RETBAD TDELX2		;NO
	XCTU [HRLM T3,0(T1)]	;YES, STORE DECREMENTED COUNT
	JUMPE T3,TDELZ		;JUMP IF TABLE NOW EMPTY
	HRLI T2,1(T2)		;COMPACT TABLE, FROM DELETED ENTRY +1
	XBLTUU [BLT T2,-1(T4)]	;TO DELETED ENTRY UNTIL END
TDELZ:	XCTU [SETZM 0(T4)]	;CLEAR EMPTY WORD AT END OF TABLE
	RETSKP
;TBADD - ADD ENTRY TO STANDARD KEYWORD TABLE
; T1/ ADDRESS OF TABLE HEADER WORD
; T2/ ENTRY TO BE ADDED
;	TADD
; RETURN +1 ALWAYS, ITRAP IF TABLE FULL OR BAD FORMAT
;  T1/ ADDRESS OF NEW ENTRY

.TBADD::MCENT
	CALL XTADD		;DO THE WORK
	 ITERR ()
	UMOVEM T1,T1
	MRETNG

;WORKER ROUTINE - MAY BE CALLED INTERNALLY. REFERENCES PREVIOUS CONTEXT.
; RETURN +1 FAILURE, TABLE FULL OR BAD FORMAT
; RETURN +2 SUCCESS

XTADD:	ASUBR <TBA,ENT>
	HLRZ T2,T2		;CONSTRUCT STRING PTR TO NEW STRING
	CALL CHKTBS		;GET POINTER TO ACTUAL STRING
	MOVE T1,TBA		;GET TABLE ADDRESS
	CALL XTLOOK		;FIND PLACE FOR NEW ENTRY
	 RETBAD()		;BAD FORMAT TABLE
	TXNE T2,TL%EXM		;EXACT MATCH?
	RETBAD TADDX2		;YES, ENTRY ALREADY IN TABLE

;T1/ ADDRESS WHERE ENTRY SHOULD BE PUT

	MOVE T2,TBA		;GET TABLE ADDRESS
	XCTU [HLRZ T4,0(T2)]	;INCREMENT NUMBER ENTRIES IN USE
	AOS T4
	XCTU [HRRZ T3,0(T2)]	;GET TABLE SIZE
	CAMLE T4,T3
	RETBAD TADDX1		;TABLE FULL
	XCTU [HRLM T4,0(T2)]	;UPDATE ENTRY COUNT
	ADD T4,T2		;COMPUTE NEW END OF TABLE
XTADD2:	CAML T1,T4		;NOW AT 'HOLE'?
	JRST [	MOVE T3,ENT	;YES, INSERT ENTRY
		UMOVEM T3,0(T1)
		RETSKP]
	XCTU [MOVE T3,-1(T4)]	;MOVE TABLE TO CREATE HOLE
	XCTU [MOVEM T3,0(T4)]
	SOJA T4,XTADD2
;TBLUK - LOOKUP ENTRY IN STANDARD KEYWORD TABLE
; T1/ ADDRESS OF TABLE HEADER WORD
; T2/ STRING POINTER TO STRING TO BE FOUND
;	TLOOK
; RETURNS +1 ALWAYS, ITERR IF BAD TABLE FORMAT
;  T1/ ADDRESS OF ENTRY WHICH MATCHED OR WHERE ENTRY WOULD BE
;	IF IT WERE IN TABLE
;  T2/ RECOGNITION CODE:
;	1B0 (TL%NOM) - NO MATCH
;	1B1 (TL%AMB) - AMBIGUOUS
;	1B2 (TL%ABR) - UNIQUE ABBREVIATION
;	1B3 (TL%EXM) - EXACT MATCH
;  T3/ POINTER TO REMAINDER OF STRING IN TABLE IF MATCH
;	WAS AN ABBREVIATION.  THIS STRING MAY BE TYPED OUT TO
;	COMPLETE THE KEYWORD.

.TBLUK::MCENT
	CALL XTLOK0		;DO THE WORK
	 ITERR ()
	UMOVEM T1,T1		;STORE RESULTS
	UMOVEM T2,T2
	UMOVEM T3,T3
	MRETNG
;WORKER ROUTINE - MAY BE CALLED INTERNALLY. REFERENCES PREVIOUS CONTEXT.
; RETURNS +1 FAILURE, BAD TABLE FORMAT
; RETURNS +2 SUCCESS, ACS AS ABOVE

;INTERNAL AC USAGE:
; T1/ TEST STRING FROM CALL
; T2/ STRING FROM TABLE
; T3/ CLOBBERED BY USTCMP
; T4/ " "
; P1/ CURRENT TABLE INDEX
; P2/ ADDRESS OF TABLE INDEXED BY P1 - USED FOR INDIRECTION
; P3/ INDEX INCREMENT FOR LOG SEARCH
; P4/ SIZE OF TABLE

XTLOOK::SAVEP			;PRESERVE ACS
XTLOK0:	ASUBR <TBA,STRG,REMSTR>	;JSYS ENTRY, NO NEED TO PRESERVE ACS
	HLRZ T3,T2		;CHECK STRING POINTER
	CAIE T3,-1		;LH 0 OR -1?
	CAIN T3,0
	HRLI T2,(POINT 7,0)	;YES, FILL IN
	MOVEM T2,STRG
	MOVEI P2,1(T1)		;CONSTRUCT ADDRESS OF FIRST ENTRY
	HRLI P2,P1!(IFIW)	;MAKE IT INDEXED BY P1
	XCTU [HLRZ P4,0(T1)]	;GET PRESENT SIZE
	MOVE P3,P4		;INITIAL INCREMENT IS SIZE
	MOVE P1,P4		;SET INITIAL INDEX TO SIZE/2
	ASH P1,-1
	JUMPE P4,TABLKX		;IF TABLE EMPTY THEN NO MATCH
TABLK0:	XCTU [HLRZ T2,@P2]	;GET STRING ADR FROM TABLE
	CALL CHKTBS		;CONSTRUCT POINTER
	MOVE T1,STRG		;GET TEST STRING
	CALL USTCMP		;COMPARE
	JUMPN T1,TABLK1		;JUMP IF NOT EXACTLY EQUAL
TABLKF:	XCTU [HLRZ T2,@P2]	;GET STRING ADDRESS
	CALL CHKTBS		;GET FLAGS
	JXN T1,CM%NOR,TABLKM	;MAKE IT AMBIG IF NOREC ENTRY
	MOVX T2,TL%EXM		;EXACTLY EQUAL, RETURN CODE
	JRST TABLKA

TABLKM:	SKIPA T2,[TL%AMB]	;AMBIGUOUS RETURN
TABLKX:	MOVX T2,TL%NOM		;NO MATCH RETURN
TABLKA:	MOVEI T1,@P2		;RETURN ADR WHERE ENTRY IS OR SHOULD BE
	RETSKP
;STRING MAY BE UNEQUAL OR A SUBSET, SEE WHICH

TABLK1:	JXE T1,SC%SUB,TABLKN	;UNEQUAL, GO SET UP NEXT PROBE
TABLK3:	MOVEM T2,REMSTR		;SUBSTRING, SAVE REMAINDER
	JUMPE P1,TABLK2		;JUMP IF THIS FIRST ENTRY IN TABLE
	MOVEI T1,@P2		;CHECK NEXT HIGHER ENTRY IN TABLE
	XCTU [HLRZ T2,-1(T1)]	;GET ITS STRING ADDRESS
	CALL CHKTBS		;BUILD BYTE PTR
	MOVE T1,STRG		;GET TEST STRING
	CALL USTCMP		;TEST PREVIOUS ENTRY
	JUMPE T1,[SOJA P1,TABLKF] ;EXACTLY EQUAL, DONE. FIX INDEX.
	JXN T1,SC%GTR,TABLK2	;IF LESS THEN HAVE FOUND HIGHEST SUBSTR
	SOJA P1,TABLK3		;STILL A SUBSTR, CHECK HIGHER

;NOW POINT AT HIGHEST ENTRY WHICH IS A SUBSTR.  IF THERE IS AN EXACT
;MATCH, IT IS BEFORE ALL SUBSETS AND HAS ALREADY BEEN FOUND

TABLK2:	MOVEI T1,@P2		;CHECK NEXT ENTRY FOR AMBIGUOUS
	CAIL P1,-1(P4)		;NOW AT LAST ENTRY IN TABLE?
	JRST TBLK2A		;YES, THIS ENTRY IS DISTINCT
	XCTU [HLRZ T2,1(T1)]	;GET STRING ADR OF NEXT ENTRY
	CALL CHKTBS		;BUILD BYTE PTR
	MOVE T1,STRG		;GET TEST STRING
	CALL USTCMP		;COMPARE NEXT LOWER ENTRY
	JUMPE T1,[RETBAD TLUKX1] ;EXACT MATCH, TABLE MUST BE BAD
	JXN T1,SC%SUB,TABLKM	;NEXT ENTRY NOT DISTINCT, DO AMBIG RETURN
TBLK2A:	XCTU [HLRZ T2,@P2]	;CHECK FLAGS FOR THIS ENTRY
	CALL CHKTBS
	JXN T1,CM%NOR,TABLKM	;FAIL IF NOREC BIT SET
	MOVX T2,TL%ABR		;GIVE LEGAL ABBREVIATION RETURN
	MOVE T3,REMSTR		;RETURN PTR TO REMAINDER OF STRING
	JRST TABLKA

;HERE WHEN PROBE NOT EQUAL

TABLKN:	CAIG P3,1		;INCREMENT NOW 1?
	JRST [	JXN T1,SC%LSS,TABLKX ;YES, NO MATCH FOUND
		AOJA P1,TABLKX]	;IF STRING GREATER, BUMP ADR FOR INSERT
	AOS P3			;NEXT INC = <INC+1>/2
	ASH P3,-1
	TXNE T1,SC%GTR		;IF LAST PROBE LOW, ADD INCREMENT
	ADD P1,P3
	TXNE T1,SC%LSS
	SUB P1,P3		;LAST PROBE HIGH, SUBTRACT INCR
TBLKN1:	CAIL P1,0(P4)		;AFTER END OF TABLE?
	JRST [	MOVX T1,SC%LSS	;YES, FAKE PROBE TOO HIGH
		JRST TABLKN]
	JUMPGE P1,TABLK0	;IF STILL WITHIN TABLE RANGE, GO PROBE
	MOVX T1,SC%GTR		;BEFORE START OF TABLE, FAKE LOW PROBE
	JRST TABLKN
;RDTTY, TEXTI -- INPUT WITH EDITING JSYSES.  GENERAL DEFINITIONS:

   REPEAT 0,<
;THE FOLLOWING DEFINITIONS ARE GIVEN IN MONSYM.  THEY ARE DUPLICATED
;HERE FOR INFORMATION ONLY.

; CONTROL BITS:

RD%BRK==1B0			;BREAK ON REGULAR BREAK SET
RD%TOP==1B1			;BREAK ON TOPS10 BREAK SET
RD%PUN==1B2			;BREAK ON PUNCTUATION
RD%BEL==1B3			;BREAK ON EOL
RD%CRF==1B4			;SUPPRESS CR IF 1
RD%RND==1B5			;RETURN ON NULL BUFFER
RD%JFN==1B6			;1= AC1 IS JFN,,JFN, 0= AC1 IS STRING PTR
RD%RIE==1B7			;RETURN (RATHER THAN BLOCK) IF INPUT BFR EMPTY
RD%BBG==1B8			;PTR TO BEGINNING OF DEST BUFFER GIVEN IN AC4
;RD%BEG
RD%RAI==1B10			;RAISE LOWERCASE INPUT
RD%SUI==1B11			;SUPPRESS ^U INDICATION

;BITS RETURNED TO USER

RD%BTM==1B12			;A BREAK CHARACTER WAS SEEN.
RD%BFE==1B13			;RETURNED BECAUSE BUFFER EMPTY
RD%BLR==1B14			;BACKUP LIMIT REACHED
   >				;END OF MONSYM DEFINITIONS

;DEFINED CHARACTER CLASSES:
;N.B. - MUST MATCH DISPTC TABLE BELOW

TOP==0				;TOPS10 BREAK
BRK==1				;REGULAR BREAK SET
ZER==2				;NULL
EOLC==3				;EOL
PUN==4				;PUNCTUATION
SAFE==5				;ALL OTHERS
RUBO==6				;DELETE A CHARACTER
RTYP==7				;RETYPE THE LINE
KLL==10				;DELETE THE LINE
KWRD==11			;DELETE A WORD
RDCRC==12			;CARRIAGE RETURN
RDQTC==13			;QUOTE CHARACTER
;AC USAGE HEREIN:
;Q1 ^R BUFFER
;Q2 TOP OF BUFFER
;Q3 POINTER TO BREAK CHAR MASK
;P1 SOURCE
;P2 BACKUP LIMIT
;P3 COUNT
;P4 DEST POINTER
;P5 INTERNAL CALLING FLAGS

;F - FLAGS FROM USER (LH)

BRFLGS==RD%TOP+RD%BRK+RD%PUN+RD%BEL ;ALL POSSIBLE BREAK SETS

;LOCAL FLAGS IN P5

DSPMF==1B16			;IN DISPLAY MODE
RTTY==1B15			;IN RDTTY
RTXT==1B14			;IN RDTXT
TXTI==1B13			;IN TEXTI
INTT==1B12			;IN INTERNAL TEXTI
;NOTE: YOU CAN'T USE BITS TO "THE LEFT" OF 1B12 IN THIS WORD
;FOR LOCAL FLAGS, SINCE THE USER'S FLAGS ARE THERE.

;HOWEVER, THERE'S PLENTY OF ROOM IN FLG2...

;LOCAL FLAGS IN FLG2

QUOTEF==1B0			;NEXT CHARACTER IS TO BE QUOTED
;RDTTY - READ TEXT WITH EDITING
; A/ DESTINATION STRING POINTER
; B/ CONTROL BITS ,, BYTE COUNT
; C/ ^R ECHO BUFFER IF NON -ZERO
;	RDTTY
; RETURN +1: FAILURE
; RETURN +2: SUCCESS, 1 AND 2 UPDATED AS APPROPRIATE

.RDTTY::MCENT			;SET UP CONTEXT
	UMOVE F,B		;GET FLAGS
	TLNN F,(BRFLGS)		;ANY BREAK SETS SELECTED?
	TXO F,RD%BEL		;NO. SET BREAK ON EOL THEN
	TXO F,RD%JFN		;MUST GET INPUT FROM FILE
	MOVE P1,[.PRIIN,,.PRIOU] ;FROM THE PRIMARIES
	SETZ Q3,		;NO SPECIAL BREAK MASK
	XCTU [HRRZ P3,B]	;BYTE COUNT
	UMOVE P4,A		;DESTINATION POINTER
	UMOVE Q1,C		;POSSIBLE ^R BUFFER
	MOVE Q2,P4		;TOP OF BUFFER
	MOVE P2,Q2		;BACKUP LIMIT IS TOP OF BUFFER
	MOVX P5,RTTY		;NOTE IN RDTTY
	JRST RCOMN		;GO DO COMMON CODE

;RDTXT
;INCLUDED FOR COMPATIBILITY ONLY, MAY BE REMOVED.
; A/ SOURCE
; B/ DESTINATION
; C/ FLAGS,,COUNT
; D/ OPTIONAL INITIAL DESTINATION PTR
;	RDTXT
; RETURN +1: FAILURE
; RETURN +2: SUCCESS

.RDTXT::MCENT
	UMOVE F,C		;GET CONTROL FLAGS
	UMOVE P4,B		;GET DESTINATION BYTE POINTER
	TXNN F,RD%BBG		;DID USER GIVE EXPLICIT BBUF PTR?
	JRST [	MOVEM P4,Q2	; NO, USE INITIAL DEST STRING PTR
		JRST RDTXT2]
	UMOVE Q2,D		;YES GET IT
RDTXT2:	MOVE P2,Q2		;BACKUP LIMIT IS TOP OF BUFFER
	SETZB Q3,Q1		;CANT HAVE THESE
	MOVX P5,RTXT		;NOTE IN RDTXT
	UMOVE P1,A		;SOURCE
	XCTU [HRRZ P3,C]	;GET COUNT
	JRST RCOMN		;GO DO COMMON CODE
;TEXTI - LONG FORM CALL OF RDTTY
; A/ POINTER TO ARGUMENT BLOCK (E)
;E+0 COUNT OF WORDS IN BLOCK
;E+1 FLAGS
;E+2 INJFN,,OUTJFN OR SOURCE PTR
;E+3 DESTINATION STRING POINTER
;E+4 COUNT OF BYTES IN DESTINATION STRING
;E+5 START OF BUFFER
;E+6 ^R ECHO BUFFER START
;E+7 POINTER TO BREAK CHARACTER MASK
;E+10 BACKUP LIMIT PTR

.TEXTI::MCENT			;ESTABLISH CONTEXT
	MOVX P5,TXTI		;NOTE IN TEXTI
	UMOVE A,A		;BLOCK POINTER
	UMOVE B,.RDCWB(A)	;COUNT OF ARGS
	CAIGE B,.RDDBC		;ENOUGH ARGS?
	RETERR(ARGX17)		;NO, INVALID ARGUMENT BLOCK LENGTH
	UMOVE F,.RDFLG(A)	;FLAGS
	UMOVE P1,.RDIOJ(A)	;P1
	UMOVE P4,.RDDBP(A)	;DESTINATION
	UMOVE P3,.RDDBC(A)	;COUNT OF BYTES IN DESTINATION
	SETZB Q1,Q3		;ASSUME THESE ARENT PRESENT
	MOVE Q2,P4		;ASSUME NO BEGINNING OF BUFFER
	CAIL B,.RDBFP		;Q2 GIVEN?
	UMOVE Q2,.RDBFP(A)	;YES. GET IT
	SKIPN Q2		;WAS IT NON-ZERO?
	MOVE Q2,P4		;NO. USE DEFAULT
	CAIL B,.RDRTY		;^R BUFFER GIVEN?
	UMOVE Q1,.RDRTY(A)	;YES. GET IT
	CAIL B,.RDBRK		;BREAK MASK GIVEN?
	UMOVE Q3,.RDBRK(A)	;YES. GET IT
	SETZ P2,		;ASSUME NO BACKUP LIMIT
	CAIL B,.RDBKL		;BACKUP LIMIT GIVEN?
	UMOVE P2,.RDBKL(A)	;YES, GET IT
	SKIPN P2		;HAVE ONE?
	MOVE P2,Q2		;NO, USE TOP OF BUFFER
	JRST RCOMN		;CONTINUE WITH COMMON SETUP

;INTERNAL ENTRY, DOES NOT CHANGE PREVIOUS CONTEXT
;ASSUMES ACS PREVIOUSLY SET UP: Q1,Q2,Q3,P1,P2,P3,P4
;ENTERING HERE ASSUMES THE 4-WORD BREAK MASK AS POINTED TO BY Q3 IS
;IN CURRENT CONTEXT INSTEAD OF PREVIOUS

ITEXTI:	MOVX P5,INTT		;NOTE INTERNAL CALL
	; ..			;FALL INTO COMMON SETUP
;COMMON ENTRY/SETUP FOR RDTTY, TEXTI

RCOMN:	TRVAR <FLG2,<UMSK,4>,CCNT,CCPTR,CRPTR,<COC,2>,<OURCOC,2>,MOD,STKP,<MASK,5>,FWTH,TTYIND,ADDPAR,CMDBAS>
	JUMPE Q3,RCNM		;SKIP FOLLOWING CODE IF NO CUSTOM BREAK MASK
	TXNN P5,INTT		;BREAK MASK, SKIP IF IN CURRENT CONTEXT
	JRST [	XCTU [DMOVE A,(Q3)]  ;PREVIOUS, GET FIRST TWO WORDS
		XCTU [DMOVE C,2(Q3)] ;GET SECOND TWO
		JRST RCNM1]
	MOVEM A,CMDBAS		;SAVE COMND BASE ADDRESS FOR SAVES
	DMOVE A,(Q3)		;CURRENT CONTEXT, GET BREAK MASK
	DMOVE C,2(Q3)
RCNM1:	DMOVEM A,UMSK		;REMEMBER BREAK MASK
	DMOVEM C,2+UMSK
RCNM:	SETZM TTYIND		;ASSUME NOT A TERMINAL
	MOVEM P,STKP		;SAVE STACK PTR FOR FAIL RETURN
	TXZ F,RD%BTM+RD%BFE+RD%BLR ;INIT RETURN FLAGS
	TXNN F,RD%JFN		;HAVE JFNS IN 1?
	JRST [	MOVE A,P1	;NO. GET STRING POINTER
		CALL RDCBP	;CHECK IT
		 RETERR(RDTX1)	;NO GOOD
		MOVEM A,P1	;PUT IT BACK IN P1
		JRST RDTXT1]
	HLRZ A,P1		;GET INPUT JFN
	RFCOC			;GET CURRENT CC STATES
	DMOVEM B,COC		;SAVE THEM
;**;[7292] Add 2 lines at RCNM:+12L	MDR	30-APR-86
	TXNE P5,INTT		;[7292] Internal TEXTI?
	 JRST RCNM2		;[7292] Yes, chars already off
	ANDCM C,[3B1+3B7+3B9+3B11] ;NO ECHO OF ^R, ^U, ^V, ^W
	SFCOC			;SET OUR MODES
;**;[7292] Change 1 line at RCNM:+15L	MDR	30-APR-86
RCNM2:	DMOVEM B,OURCOC		;[7292] Remember ours
	MOVEM C,MOD		;SAVE C
	DVCHR			;MTOPR WORKS ON TTY ONLY
	HLRZ A,P1		;GET INPUT JFN
	LDB T2,[POINTR T2,DV%TYP] ;GET DEVICE TYPE CODE
	CAIE T2,.DVTTY		;SKIP IF IT'S A TERMINAL
	JRST NOTTY		;NO - NOT A TTY
	SETOM TTYIND		;INDICATE IT'S A TERMINAL
	GDSTS			;GET DEVICE BITS
	ANDX B,GD%PAR		;ISOLATE PARITY ADD BIT
	MOVEM B,ADDPAR		;SAVE PARITY BIT
	MOVEI B,4		;SET THE LENGTH IN THE BLOCK
	MOVEM B,MASK		;SET INTO THE BLOCK
	MOVEI B,.MORBM		;GET WAKE-UP MASK FOR SAVING
	XMOVEI C,MASK		;WHERE IT'S GOING
	MTOPR
	MOVEI B,.MORFW		;SAVE THE FIELD WIDTH
	MTOPR
	MOVEM C,FWTH
NOTTY:	MOVE C,MOD		;RESTORE C
	RFMOD			;GET CURRENT WAKEUP MODES
	TXZ B,TT%OSP		;FORGET OUTPUT SUPPRESS
	MOVEM B,MOD		;SAVE AND RESTORE WHEN DONE
	TRZ B,TT%WAK+TT%DAM	;WILL SET THESE FIELDS
	TRO B,<FLD(.TTASC,TT%DAM)> ;ASCII IN
	CALL RTSETW		;COMPUTE AND SET WAKEUPS FROM MASK
	TXO B,TT%IGN		;IGNORE TT%WAK IN THE SFMOD
	SFMOD			;SET NEW MODES
	GTTYP			;GET TERMINAL TYPE
	HRRZ A,B
	HRR P5,TTYPE1(A)	;GET ADDRESS OF CURSOR CONTROL TAALE
	TRNE P5,-1		;HAVE A TABLE?
	TXO P5,DSPMF		;YES, SET DISPLAY MODE
	; ..
;VERIFY ALL OF THE STRING POINTERS

RDTXT1:	SKIPN A,P4		;HAVE A DEST POINTER?
	RETERR (RDTX1)		;NO. THAT IS AN ERROR
	CALL RDCBP		;YES. CHECK IT OUT
	 RETERR(RDTX1)		;BAD
	MOVE P4,A		;GET CONVERTED POINTER BACK
	SKIPN A,Q1		;HAVE A ^R BUFFER?
	JRST RDTOPM		;NO. GO AROUND THEN
	CALL RDCBP		;YES. VERIFY IT
	 RETERR (RDTX1)		;BAD
	MOVE Q1,A		;GET VERIFIED POINTER
RDTOPM:	MOVE A,P2		;VERIFY BACKUP LIMIT PTR
	CALL RDCBP
	 RETERR (RDTX1)		;RETURN ERROR
	MOVEM A,P2		;OK
	MOVE A,Q2		;GET TOP OF BUFFER
	CALL RDCBP		;VERIFY IT
	 RETERR (RDTX1)		;BAD
	MOVE Q2,A		;ALL VERIFIED NOW
	JUMPLE P3,WRAP0		;MAKE SURE COUNT HAS ROOM IN IT
	MOVEI A,0		;A WILL COUNT CONSECUTIVE QUOTERS
	MOVE B,P4		;WE'LL START SCANNING BACKWARDS FROM CURRENT END OF DESTINATION STRING
RDT1:	CAMN B,P2		;ANY MORE EDITABLE DATA?
	JRST RDT2		;NO
	XCTBU [LDB C,B]		;YES, LOOK AT PREVIOUS CHARACTER
	CAIE C,CMQUOT		;A QUOTER?
	JRST RDT2		;NO, SO WE'RE DONE SCANNING
	MOVNI C,1		;YES, BACK UP TO CONTINUE THE SCAN
	ADJBP C,B
	MOVE B,C
	AOJA A,RDT1		;KEEP TRACK OF HOW MANY QUOTES HAVE BEEN SEEN
RDT2:	STOR A,QUOTEF,FLG2	;NOTE WHETHER FIRST CHARACTER SEEN SHOULD BE QUOTED
	;...
;MAIN LOOP - DOES INPUT OF BYTE AND DISPATCH ON CHARACTER CLASS
;ACTION ROUTINES EXIT TO:
; INSRT - APPEND CHARACTER AND CONTINUE
; NINSRT - CONTINUE WITHOUT APPENDING CHARACTER
; DING - BUFFER NOW EMPTY, POSSIBLE RETURN TO USER
; WRAP, WRAP0 - RETURNS TO USER

NINSRT:	TXNE F,RD%BEG		;USER REQUEST INSTANT RETURN WHEN LIMIT REACHED?
	TXNN F,RD%BLR		;YES, HAS LIMIT BEEN REACHED
	CAIA			;NOT ALL OF THE ABOVE
	JRST WRAP0		;TIME TO RETURN (TYPIST EDITED BACK FAR ENOUGH)
	TXNE F,RD%RIE		;USER WANTS RETURN ON NO INPUT?
	JRST [	TXNN F,RD%JFN	;YES, HAVE A JFN FOR INPUT?
		JRST .+1	;NO, PROCESS UNTIL STRING RUNS OUT
		HLRZ A,P1	;GET INPUT JFN
		SIBE		;STILL HAVE INPUT?
		JRST .+1	;YES, KEEP PROCESSING
		JRST WRAP0]	;NO, RETURN
	SKIPE  TTYIND		;SKIP IF NOT A TERMINAL
	JRST [	MOVEI B,.MOSFW	;SET FIELD WIDTH - IT CAN GET SCREWED UP
		MOVE C,P3	;GET THE BYTE COUNT
		HLRZ A,P1	;GET INPUT JFN
		MTOPR
		JRST .+1]
	TXNN P5,INTT		;ARE WE IN INTERNAL MODE?
	JRST NINSR0		;NOPE, DO POINTER STORES
	TXNN F,RD%BLR		;ARE WE PAST BACKUP LIMIT?
	JRST NINSR1		;NOPE, SKIP POINTER STORES
	MOVE A,CMDBAS		;STORE INTERNAL POINTERS
	UMOVEM P4,.CMPTR(A)
	UMOVEM P3,.CMCNT(A)
	JRST NINSR1		;SKIP OVER OTHER POINTER STORES
NINSR0:	CALL STP6NI		;STORE DEST POINTER
	CALL STP3NI		;STORE COUNT
NINSR1:	CALL WNULL		;GUARANTEE THAT BUFFER ENDS WITH NULL, IN CASE INTERRUPT
	CALL RDBIN		;DO BIN
	MOVE A,B		;SAVE CHARACTER IN A
	IDIVI B,CHRWRD		;SET UP TO GET CHAR CLASS
	LDB B,CCBTAB(C)		;GET IT FROM BYTE TABLE
	IDIVI B,2		;SET UP TO REF DISPATCH TABLE
	JUMPE C,[HLRZ D,DISPTC(B) ;GET LH ENTRY
		JRST .+2]
	HRRZ D,DISPTC(B)	;GET RH ENTRY
	MOVE B,A		;ROUTINES WANT CHARACTER IN B
	MOVE C,FLG2
	TXZN C,QUOTEF		;ARE WE SUPPOSED TO QUOTE THE NEXT CHARACTER?
	JRST 0(D)		;DISPATCH TO ACTION ROUTINE
	MOVEM C,FLG2		;TURN OFF QUOTEF IN FLAG WORD
	JRST INSRT		;YES, DON'T PERFORM SPECIAL ACTION

;RETURN FROM ACTION ROUTINE TO APPEND CHARACTER AND CONTINUE.
; B/ CHARACTER

INSRT:	SKIPN Q3		;USER SPECIFYING BREAKS?
	JRST INSRT1		;NO. GO ON
	MOVE A,B		;YES. GET BYTE
	IDIVI B,^D32		;GET WORD AND OFFSET FOR TESTING
	MOVE C,BITS(C)		;TEST MASK
	EXCH A,B		;CHAR TO B
	ADDI A,UMSK		;WORD TO TEST
	TDNE C,0(A)		;IS THE BIT SET?
	JRST WRAP		;YES. WRAP IT UP THEN
INSRT1:	XCTBU [IDPB B,P4]	;APPEND BYTE TO USER STRING
	SOJG P3,NINSRT		;CONTINUE IF STILL HAVE COUNT
	JRST WRAP0		;COUNT EXHAUSTED, RETURN
;BUFFER EMPTY, RING BELL OR RETURN TO USER

BNULL:	TXNE F,RD%RND		;USER WANTS RETURN?
	JRST WRAPE		;YES
DING:	MOVEI B,"G"-100		;NO, DO BELL
	CALL RDBOUT
	CALL CHKBLP		;UPDATE BACKUP DATABASE
	JRST NINSRT		;AND WAIT FOR FOR INPUT

;RETURNS TO USER.

;HERE IF RETURNING BECAUSE BUFFER BECAME EMPTY AND RD%RND SET

WRAPE:	TXO F,RD%BFE		;TELL USER
	JRST WRAP0

;APPEND LAST CHARACTER AND RETURN

WRAP:	XCTBU [IDPB B,P4]	;APPEND BYTE
	SUBI P3,1		;UPDATE COUNT
	TXO F,RD%BTM		;SAY BREAK CHARACTER TERMINATED INPUT

;STORE NULL ON STRING AND RETURN

WRAP0:	CALL WNULL		;PUT IN A NULL
	CALL WRAPX		;UPDATE USER VARIABLES, ETC.
	JXN P5,INTT,RSKP	;DO RET IF INTERNAL CALL
	SMRETN

;ROUTINE TO WRITE A NULL AFTER LAST CHARACTER IN BUFFER IF ROOM.

WNULL:	JUMPLE P3,R		;DON'T STORE NULL IF COUNT EXHAUSTED
	MOVE D,P4		;GET COPY OF DEST PTR
	SETZ B,
	XCTBU [IDPB B,D]	;STORE NULL WITHOUT CHANGING USER PTR
	RET
;UPDATE USER VARIABLES AND RESTORE USER MODES ON RETURN

WRAPX:	CALL STP3		;UPDATE BYTE COUNT
	TXNN F,RD%JFN		;HAVE JFNS?
	JRST WRAPX1		;NO
	HLRZ A,P1		;YES, GET INPUT JFN
	MOVE B,MOD		;RESTORE MODES
	SKIPE TTYIND		;SKIP IF NOT A TTY
	TXO B,TT%IGN		;TTY - IGNORE THE TT%WAK FIELD
	SFMOD
	SKIPN TTYIND		;IF IT'S NOT TTY DON'T SKIP
	JRST NOTTY2
	MOVEI B,.MOSBM		; TO RESTORE THE MASK
	XMOVEI C,MASK
	MTOPR
	MOVEI B,.MOSFW		;RESTORE FIELD WIDTH
	MOVE C,FWTH
	MTOPR
NOTTY2:	DMOVE B,COC		;RESTORE CC
;**;[7292] Add 2 lines at NOTTY2:+1L	MDR	30-APR-86
	CAMN B,OURCOC		;[7292] But only if necessary
	CAME C,1+OURCOC		;[7292]
	SFCOC
WRAPX1:	CALL STP6		;UPDATE POINTER
	CALL STFLG		;UPDATE FLAGS
	RET
;RETURN IF FAILURE DETECTED DURING TEXTI

TXIBAD:	MOVE P,STKP		;RESET STACK
	MOVE Q3,LSTERR		;SAVE ERROR CODE
	CALL WRAPX		;UPDATE, ETC.
	MOVE A,Q3		;RETURN ERROR CODE
	JXN P5,INTT,R		;LOCAL RETURN
	RETERR
;PARAMETERS FOR CLASS TABLE

CCBITS==4			;BITS/BYTE
CHRWRD==^D36/CCBITS		;BYTES/WORD

;TABLE OF BYTE PTRS TO REFERENCE CLASS TABLE

	XX==CCBITS-1
CCBTAB:	REPEAT CHRWRD,<
	 POINT CCBITS,CTBL(B),XX
	 XX=XX+CCBITS>

;CLASS DISPATCH TABLE
;N.B. - MUST MATCH DEFINITIONS OF CLASS TYPES ABOVE

DISPTC:	TOPS10,,BREAKS
	ZERO,,EOL1
	PUNC,,INSRT
	DELC,,RTYPE
	DELIN,,KLWORD
	RDCR,,RDQT
;CHARACTER CLASS TABLE

DEFINE CCN (A,B)<
	REPEAT B,<
	 CC1 (A)>>

DEFINE CC1 (C)<
	WCHAR==WCHAR+1	;;KEEP TRACK OF WHICH CHARACTER WE'RE ON
	QQ=QQ+CCBITS
	IFG QQ-^D35,<
	 QW
	 QW=0
	 QQ=CCBITS-1>
	QW=QW+<C>B<QQ>>

;MACRO WHICH DECLARES A CHARACTER TO BE A SPECIAL TEXTI EDITING CHARACTER

DEFINE CCED (C)<
	CC1 (C)	;;DO SAME AS CC1
	BRKCH. (WCHAR)	;;SAY WE HAVE TO BREAK ON IT
>
	WCHAR==-1
	QW==0
	QQ==-1

	BRINI.	;;INITIALIZE BREAK MASKS

CTBL:	CC1(ZER)		;0
	CCN(PUN,6)		;1-6
	CC1(TOP)		;7
	CCN(PUN,2)		;10-11
	CC1(EOLC)		;12
	CC1(TOP)		;VT
	CC1(TOP)		;FF
	CC1(RDCRC)		;CR
	CC1(PUN)		;^N
	CC1(RTYP)		;^O - ACTS LIKE ^R IF SEEN IN INPUT STREAM
	CCN(PUN,2)		;^P, ^Q
	CCED(RTYP)		;^R
	CCN(PUN,2)		;^S,^T
	CCED(KLL)		;^U
	CC1(RDQTC)		;^V
	CCED(KWRD)		;^W
	CCN(PUN,2)		;^X,^Y
	CCN(BRK,2)		;^Z,$
	CCN(PUN,4)		;34-37
	CCN(PUN,^D16)		;40-/
	CCN(SAFE,^D10)		;0-9
	CCN(PUN,7)		;:-@
	CCN(SAFE,^D26)		;A-Z
	CCN(PUN,6)		;]-140
	CCN(SAFE,^D26)		;A-Z
	CCN(PUN,4)		;173-176
	CCED(RUBO)		;177
	QW			;GET LAST WORD IN

EDC0==W0.			;REMEMBER BREAK MASKS (SEE "DEFINE BRKCH.")
EDC1==W1.
EDC2==W2.
EDC3==W3.
;LOCAL ROUTINES TO DO LOGICAL BIN AND BOUT.  DO ILDB/IDPB IF
;HAVE STRING PTR

;RDBIN
;	CALL RDBIN
; RETURN +1 ALWAYS, B/ BYTE READ FROM P1

RDBIN:	TXNN F,RD%JFN		;HAVE JFN FOR SOURCE?
	JRST [	XCTBU [ILDB B,P1] ;GET A BYTE
		CALL STSRC	;STORE NEW POINTER
		JRST RDBIN1]
RDBIN2:	HLRZ A,P1		;GET INJFN
	BIN			;GET BYTE
	 ERJMP TXIBAD		;FAILS
	JUMPE B,[GTSTS		;NULL ENCOUNTERED, SEE IF EOF
		TXNN B,GS%EOF
		JRST RDBIN2	;NOT EOF, FLUSH NULL
		JRST TXIBAD]	;EOF, CAUSE FAIL RETURN
RDBIN1:	ANDI B,177		;FLUSH POSSIBLE EXTRANEOUS BITS
	TXNN F,RD%RAI		;RAISE INPUT?
	RET			;NO, RETURN
	CAIL B,"A"+40		;YES, HAVE LC CHARACTER?
	CAILE B,"Z"+40
	SKIPA			;NO
	SUBI B,40		;YES, CONVERT TO UPPER
	RET

;RDBOUT
; B/ BYTE
;	CALL RDBOUT
; RETURN +1 ALWAYS, FLUSHES CHARACTER IF NO OUTPUT JFN

RDBOUT:	TXNN F,RD%JFN		;HAVE OUTPUT JFN?
	RET			;NO, DO NOTHING
	HRRZ A,P1		;YES. GET IT
	BOUT			;OUTPUT THE BYTE
	 ERJMP TXIBAD		;FAILS
	RET
;RDSOUT - OUTPUT STRING ALA RDBOUT
; B/ STRING PTR
;	CALL RDSOUT
; RETURN +1 ALWAYS, LOSES CHARACTERS IF NO OUTPUT JFN

RDSOUT:	TXNN F,RD%JFN		;HAVE OUTPUT JFN?
	RET			;NO, DO NOTHING
	HRRZ A,P1		;YES, GET IT
	SETZ C,
	SOUT			;OUTPUT THE STRING
	RET

;CHECK BYTE POINTER GIVEN AS ARGUMENT
; A/ BYTE POINTER
;	CALL RDCBP
; RETURN +1: NO GOOD, SIZE INVALID
; RETURN +2: OK, LH INITIALIZED IF NECESSARY

RDCBP:	HLRZ B,A		;GET LH
	CAIN B,-1		;IS DEFAULT?
	HRLI A,(<POINT 7,0>)	;YES, FILL IN 7-BIT
	LDB B,[POINT 6,A,11]	;CHECK BYTE SIZE
	CAIGE B,7		;7 OR GREATER?
	RET			;NO, RETURN BAD
	IBP A			;INCR IT AND DECR IT ONCE SO WILL
	CALL DBP		; BE IN KNOWN STATE FOR COMPARES
	RETSKP
;ROUTINE TO SET WAKEUP SET FROM CHARACTER BIT MASK
; Q3/ 0 IFF NO CUSTOM MASK SUPPLIED
; B/ CURRENT TERMINAL MODE WORD
;	CALL RTSETW
; RETURN +1, ALWAYS

RTSETW:	SKIPN TTYIND		;SKIP IF IT'S A TERMINAL
	RET
	SAVEP
	SAVET
	SETZB P2,P3		;ZERO AREA USED FOR MASK HOLDING
	SETZB P4,P5
	JUMPE Q3,RSET1		;DID USER PROVIDE A MASK
	DMOVE P2,UMSK		;YES, GET FIRST PART
	DMOVE P4,2+UMSK		;AND REST

RSET1:	TXNN P2,<1B<.CHCRT>>	;BREAK ON CR?
	 TXNE F,RD%BEL		;WANT END OF LINE WAKING?
	  TXO P2,CM%BEL		;YES - SET BITS
	TXNE F,RD%TOP		;TOPS10 WAKE SET?
	TXO P2,CM%TOP
	TXNE F,RD%PUN		;PUNCTUATION?
	JRST [	TXO P2,CM%PU0	;YES - SET FOUR WORDS
		TXO P3,CM%PU1
		TXO P4,CM%PU2
		TXO P5,CM%PU3
		JRST .+1]
	TXNE F,RD%BRK		;WAKE ON CTRL/Z OR ESC?
	TXO P2,CM%CZE		;YES
	TXO P2,EDC0		;ALWAYS BREAK ON EDITING CHARACTERS
	TXO P3,EDC1
	TXO P4,EDC2
	TXO P5,EDC3
	MOVEI B,.MOSBM		;NOW TO SET THE MASK
	MOVEI C,P1		;POINT TO MASK
	MOVEI P1,4		;LENGTH OF BLOCK
	MTOPR			;SET IT
	RET
;LOCAL ROUTINES FOR EDITING FUNCTIONS

;DELETE CHARACTER FROM DESTINATION - BACK UP PTR AND CHECK
;FOR TOP OF BUFFER
;	CALL BACK
; RETURN +1: AT TOP OF BUFFER, NO CHARACTER TO DELETE
; RETURN +2: CHARACTER DELETED

BACK:	CAMN P4,Q2		;AT TOP OF BUFFER?
	RET			;YES
	MOVE A,P4		;GET DEST PTR
	CALL DBP		;DECREMENT IT
	MOVEM A,P4		;PUT IT BACK
	CALL CHKBLP		;CHECK BACKUP LIMIT
	AOJA P3,RSKP		;UPDATE COUNT AND RETURN

;PUT BYTE BACK INTO SOURCE
; B/ BYTE
;	CALL RDBKIN
; RETURN +1 ALWAYS

RDBKIN:	TXNN F,RD%JFN		;HAVE JFN FOR SOURCE?
	JRST [	MOVE A,P1	;NO, BACK UP P1 STRING
		CALL DBP
		MOVEM A,P1
		RET]
	HLRZ A,P1		;BACK UP THE JFN
	BKJFN
	 JFCL
	RET

;CHECK FOR POINTER AT OR BEFORE BACKUP LIMIT

CHKBLP:	HRRZ T1,P4		;GET ADR OF MAIN PTR
	CAILE T1,0(P2)		;GREATER THAN LIMIT?
	RET			;YES, OK
	CAIE T1,0(P2)		;LESS THAN LIMIT?
	JRST CHKBL1		;YES, SET FLAG
	HLRZ T1,P4		;NO, GET P FIELDS
	HLRZ T2,P2
	CAML T1,T2		;T1 SAME OR EARLIER BYTE?
CHKBL1:	TXO F,RD%BLR		;YES, FLAG LIMIT REACHED
	RET
;FIND BEGINNING OF CURRENT LINE.
;	CALL FNDLIN
; RETURN +1: AT TOP OF BUFFER
; RETURN +2: A/ BACKED-UP BYTE PTR TO BEGINNING OF LINE
;	B/ BYTE COUNT CONSISTENT WITH P4 IN A
;	C/ # OF NON-PRINTING CONTROLS IN THE LINE

FNDLIN:	CAMN P4,Q2		;AT TOP OF BUFFER?
	RET			;YES
	STKVAR <NOPRNT,SAVP3,SAVP4> ;WORK CELLS
	SETZM NOPRNT		;NO NO PRINTING CHARACTERS YET
	MOVEM P3,SAVP3
	MOVEM P4,SAVP4		;SAVE CURRENT LINE VARIABLES
	XCTBU [LDB B,P4]	;GET FIRST CHARACTER TO DELETE
FNDLN1:	CAIL B,40		;A CONTROL?
	JRST FNDLN3		;NO, KEEP LOOKING
	DMOVE C,OURCOC		;YES. SEE IF IT IS PRINITNG
	ROTC C,0(B)
	ROTC C,0(B)
	TLNN C,(1B1)		;IS IT?
	AOS NOPRNT		;NO. COUNT IT THEN
FNDLN3:	MOVE A,P4		;BACK UP ONE CHARACTER
	CALL DBP
	MOVEM A,P4
	ADDI P3,1
	CAMN P4,Q2		;NOW AT TOP OF BUFFER?
	JRST FNDLN2		;YES, RETURN
	XCTBU [LDB B,P4]	;GET NEXT CHARACTER TO DELETE
	CAIE B,.CHLFD		;EOL OR LF?
	JRST FNDLN1		;NO, GO LOOK AT SOME MORE

FNDLN2:	MOVE A,P4		;RETURN NEW LINE VARIABLES
	MOVE B,P3
	MOVE P3,SAVP3		;RESORE OLD LINE VARIABLES
	MOVE P4,SAVP4		;""
	MOVE C,NOPRNT		;AND RETURN # OF NON-PRINTING CONTROLS
	RETSKP

;ACTION ROUTINES

;ZERO BYTE

ZERO:	SKIPE Q3		;USER HAVE A MASK?
	JRST INSRT		;YES. GO SEE ABOUT IT THEN
	JRST WRAP0		;NO. ALWAYS BREAK THEN

;REGULAR BREAKS

BREAKS:	TXNE F,RD%BRK+RD%TOP	;REGULAR INCLUDES TOPS10 - BREAK?
	JRST WRAP		;YES
	JRST INSRT		;NO, STORE BYTE AND RETURN

;PUNCTUATION AND TOPS10 BYTES

TOPS10:	TXNN F,RD%TOP		;BREAK?
PUNC:	TXNE F,RD%PUN		;BREAK?
	JRST WRAP		;YES
	JRST INSRT		;NO
;CARRIAGE RETURN - IF LINE FEED FOLLOWS, TREAT LIKE EOL

RDCR:				;HERE ON A CR
	SKIPN Q3		;USER SPECIFYING BREAKS?
	 JRST RDCR0		;NO
	MOVEI A,UMSK		;YES SO GET ADDRESS OF BREAK MASK
	MOVE A,0(A)		;GET THE FIRST WORD OF THE MASK
	TXNE A,<1B<.CHCRT>>	;BREAK ON CARRIAGE RETURN?
	 JRST INSRT		;YES SO GO DO IT
RDCR0:				;HERE ON CR AND NOT BREAKING ON CR
	CALL RDBIN		;GET THE NEXT CHAR
	CAIN B,.CHLFD		;LF?
	JRST RDCR1		;YES, NORMAL NEWLINE
	CALL RDBKIN		;NO, PUT BACK THE SECOND BYTE
	MOVEI B,.CHCRT		;APPEND A REAL CR
	JRST TOPS10

RDCR1:	TXNE F,RD%CRF		;USER WANTS CR RETURNED?
	JRST RDCR2		;NO, SUPPRESS IT
	MOVEI B,.CHCRT
	XCTBU [IDPB B,P4]	;APPEND CR
 	SOJLE P3,[CALL RDBKIN	;NO MORE ROOM
		  JRST WRAP0]	;PUT LF BACK

RDCR2:	MOVEI B,.CHLFD
EOL1:	TXNE F,RD%BEL+RD%TOP+RD%PUN ;BREAK ON END OF LINE?
	JRST WRAP		;YES
	JRST INSRT		;NO

;QUOTE CHARACTER (^V) - INHIBITS EDITING ACTION OF FOLLOWING CHARACTER

RDQT:	MOVX C,QUOTEF
	IORM C,FLG2		;REMEMBER TO QUOTE NEXT CHARACTER
	JRST INSRT		;GO INSERT THE QUOTER
;DELETE CHARACTER (RUBOUT)

DELC:	CALL BACK		;BACK UP PTR
	 JRST BNULL		;NOTHING LEFT IN BUFFER
	MOVE D,P4
	XCTBU [ILDB A,D]	;GET CHAR JUST DELETED
	CAIN A,.CHLFD		;WAS IT LF?
	JRST [	CALL DELCR	;YES, DELETE C/R AND UPDATE DISPLAY
		JRST NINSRT]
	MOVE B,MOD
	TXNN B,TT%ECO		;ECHOS ON?
	JRST NINSRT		;NO, SKIP DISPLAY UPDATE
	TXNE P5,DSPMF		;WHAT KIND OF TERMINAL?
	JRST [	CALL CURBK	;IF DISPLAY, BACK UP CURSOR
		JRST NINSRT]
	MOVE B,A		;NOT A DISPLAY TERMINAL
	CALL RDBOUT		;ECHO DELETED CHARACTER
	MOVEI B,"\"
	CALL RDBOUT		;FOLLOW IT WITH A BACKSLASH
	JRST NINSRT

;DELETE LAST CHARACTER TYPED IF IT'S A CARRIAGE RETURN
;AND UPDATE TERMINAL DISPLAY TO REFLECT DELETION OF CR/LF

DELCR:	CAME P4,Q2		;AT START OF BUFFER NOW?
	JRST [	XCTBU [LDB B,P4] ;NO, GET CHARACTER BEFORE LINEFEED
		CAIE B,.CHCRT	;IS IT CARRIAGE-RETURN?
		JRST .+1	;NO
		CALL BACK	;YES, KILL IT TOO
		 JFCL		;(NEVER RETURNS +1)
		JRST .+1]
	MOVX B,TT%ECO
	TDNN B,MOD		;ECHO ON?
	RET			;NO, DON'T OUTPUT TO TERMINAL
	TXNN P5,DSPMF		;WHAT KIND OF TERMINAL?
	JRST [	HRROI B,[ASCIZ/
/]				;NON-VIDEO TERMINAL,
		CALLRET RDSOUT]	; SO ACKNOWLEDGE WITH CRLF
	CALL CURUP		;MOVE CURSOR UP 1 LINE
	CALLRET RTYPES		;RETYPE LINE AND RETURN TO CALLER
;DELETE LINE (CONTROL-U)

DELIN:	CALL DELIN0		;DO THE WORK
	CAME P4,Q2		;BUFFER NOW EMPTY?
	JRST NINSRT		;NO, CONTINUE
	TXNE F,RD%RND		;YES, USER WANTS RETURN?
	JRST WRAPE		;YES, RETURN
	CALL RTYPP		;NO, RETYPE PROMPT
	JRST NINSRT		;CONTINUE

DELIN0:	TXNN F,RD%SUI		;IF NOT SUPPRESSING CTRL-U INDICATION,
	CALL CURCR		;PUT CURSOR AT BEGINNING OF LINE
	CALL FNDLIN		;FIND BEGINNING OF LINE
	 JRST DELIN1		;NOTHING IN BUFFER
	MOVEM A,P4		;SET LINE VARIABLES TO BEGINNING
	MOVEM B,P3
	CAME P4,Q2		;BUFFER NOW EMPTY?
	JRST DELIN2		;NO, GO TYPE DELETE INDICATION
DELIN1:	TXNE F,RD%SUI		;BUFFER EMPTY, USER SUPPRESSING INDICATION?
	JRST DELIN3		;YES
DELIN2:	JXO P5,DSPMF,DELIN3	;IF DPY, LINE ALEADX CLEAN
	HRROI B,[ASCIZ / XXX
/]
	CALL RDSOUT		;NON-DPY, NOTE DELETION
DELIN3:	CALLRET CHKBLP		;UPDATE BOUNDARY BITS AND RETURN
;DELETE WORD (CONTROL-W)

KLWORD:	CALL BACK		;DELETE AT LEAST ONE CHARACTER
	 JRST BNULL		;WASN'T ONE
	MOVE D,P4
	XCTBU [ILDB B,D]	;GET CHAR JUST DELETED
	CAIN B,.CHLFD		;LF OR EOL?
	JRST [	CALL DELCR	;YES, DELETE CR AND UPDATE DISPLAY
		JRST BWRD1]	;ENTER BACKWARDS-SCAN LOOP
BWRD4:	MOVE C,MOD		;CHECK ECHOS
	JXE C,TT%ECO,BWRD1	;NO OUTPUT IF ECHOS OFF
	JXE P5,DSPMF,BWRD1	;JUMP IF NOT DISPLAY
	XCTBU [LDB A,D]		;GET CHAR
	CALL CURBKW		;BACK UP CURSOR BUT DON'T CLEAR SCREEN YET
BWRD1:	CALL BACK		;DELETE NEXT CHARACTER
	 JRST BWRD2		;NO MORE LEFT
	MOVE D,P4		;LOOK AT CHARACTER JUST DELETED
	XCTBU [ILDB B,D]
	IDIVI B,CHRWRD		;GET ITS CHARACTER CLASS
	LDB B,CCBTAB(C)
	CAIN B,SAFE		;IS IT A WORD SEPARATOR?
	JRST BWRD4		;NO, KEEP DELETING
	IBP P4			;YES, KEEP THAT CHARACTER
	SUBI P3,1
BWRD2:	CALL CHKBLP		;CHECK BACKUP LIMIT POINTER
	MOVEI B,"_"		;INDICATE WORD DELETION
	TXNN P5,DSPMF		;BUT ONLY IF NONDISPLAY
	CALL RDBOUT
	TXNE P5,DSPMF		;DISPLAY?
	CALL CLRLNQ		;YES, THEN CLEAR TO END OF LINE
	JRST NINSRT		;CONTINUE INPUT UNLESS BUFFER EMPTY ETC.
;RETYPE LINE (CONTROL-R)

RTYPE:	MOVE B,MOD		;CHECK ECHOS
	JXE B,TT%ECO,DING	;DING IF ECHOS OFF
	CALL RTYPES		;DO THE WORK
	CALL CHKBLP		;CHECK FOR BACKUP LIMIT SO ^R CAUSES RETURN ON RD%BEG
	JRST NINSRT

;RETYPE PROMPT ONLY, ASSUMING CURSER ALREADY POSITIONED AT BEGINNING
;OF LINE

RTYPP:	JRST RTYP33		;ENTER AFTER ALL POSITIONING STUFF

;SUBROUTINE TO RETYPE LINE

RTYPES:	JXE P5,DSPMF,[HRROI B,[ASCIZ /
/]
		CALL RDSOUT	;NON-DISPLAY, GET CLEAN LINE
		JRST RTYP33]
	CALL CURCR		;PUT CURSOR TO BEGINNING OF LINE
RTYP33:	CALL FNDLIN		;FIND BEGINNING OF LINE
	 MOVE A,Q2		;AT TOP OF BUFFER - USE IT
	MOVE D,A		;SAVE PTR TO BEGINNING OF LINE
	CAME D,Q2		;BEG OF LINE IS TOP OF BUFFER?
	JRST RTYP1		;NO, DON'T TYPE ^R BFR
	SKIPE D,Q1		;GET ^R BFR IF ANY
RTYP3:	CAMN D,Q2		;UP TO TOP OF BFR?
	JRST RTYP4		;YES, DONE WITH ^R BFR
	XCTBU [ILDB B,D]	;GET CHAR FROM ^R BFR
	JUMPN B,[CALL RDBOUT	;TYPE IT
		JRST RTYP3]
RTYP4:	MOVE D,Q2		;DONE WITH ^R BFR, NOW DO MAIN BFR
RTYP1:	CAMN D,P4		;BACK TO END OF LINE?
	RET			;YES
	XCTBU [ILDB B,D]	;NO, GET NEXT BYTE
	CALL RDBOUT		;TYPE IT
	JRST RTYP1		;LOOP UNTIL AT END OF BUFFER
;ROUTINE TO PUT CURSOR AT BEGINNING OF LOGICAL LINE.  WILL DO CURUP'S
;IF NECESSARY.

CURCR:	STKVAR <TWID,NUPS>
	JXE P5,DSPMF,CURCRX	;NON-DPY, DO NOTHING
	MOVEI B,.CHCRT		;DISPLAY, GET TO LEFT MARGIN
	CALL RDBOUT
	CAMN P4,Q2		;BEGINNING OF BUFFER?
	JRST RTYP2		;YES, SO DEFINITELY NOT END OF LINE
	XCTBU [LDB B,P4]	;NO, GET LAST CHAR
	CAIN B,.CHLFD		;END OF LINE?
	CALL CURUP		;YES, CURSOR UP FIRST
RTYP2:	CALL CLRLIN		;CLEAR THE LINE
	CALL GETWTH		;GET WIDTH OF LINE
	JUMPE A,RTYP0		;NO CURSOR UPS NECESSARY IF INFINITE WIDTH LINE
	MOVEM A,TWID		;REMEMBER IT
	CALL MEASUR		;GET PHYSICAL LENGTH OF LINE
	 MOVEI A,1		;CAN'T, SO DON'T TRY TO BACK CURSOR UP
	SOJ A,
	IDIV A,TWID		;NOW A HAS NUMBER OF CURSOR UPS NEEDED TO GET TO BEGINNING OF LINE
	MOVEM A,NUPS		;REMEMBER NUMBER OF UPS NEEDED
RTYP20:	SOSGE NUPS		;MORE UPS NEEDED?
	JRST RTYP0		;NO, PROCEED WITH RETYPING LINE
	CALL CURUP		;YES, DO ANOTHER
	JRST RTYP20		;AND LOOP FOR REST

RTYP0:	CALL CLRLIN		;CLEAR THE LINE
CURCRX:	RET
;ROUTINES TO RETURN DATA TO USER FOR RDTXT ROUTINES

STSRC:	TXNE P5,RTTY+INTT	;RDTTY OR INTERNAL?
	RET			;NOTHING TO DO
	TXNE P5,RTXT		;RDTXT?
	UMOVEM P1,T1		;RETURN UPDATED SOURCE
	UMOVE T1,T1		;GET TEXTI BLK PTR
	TXNE P5,TXTI		;TEXTI?
	UMOVEM P1,.RDIOJ(T1)	;YES
	RET			;AND DONE

STFLG:	TXNE P5,INTT		;INTERNAL?
	RET			;NOTHING TO DO
	TXNE P5,RTTY		;RDTTY?
	XCTU [HLLM F,T2]	;FLAGS TO T2
	TXNE P5,RTXT		;RDTXT?
	XCTU [HLLM F,T3]	;FLAGS TO T3
	UMOVE T1,T1		;GET TEXTI BLK PTR
	TXNE P5,TXTI		;TEXTI?
	XCTU [HLLM F,.RDFLG(T1)] ;FLAGS TO BLOCK
	RET			;AND DONE

STP6:	TXNE P5,INTT		;INTERNAL?
	RET			;NOTHING TO DO
STP6NI:	TXNE P5,RTTY		;RDTTY?
	UMOVEM P4,T1		;YES, POINTER TO T1
	TXNE P5,RTXT		;RDTXT?
	UMOVEM P4,T2		;YES, POINTER TO T2
	UMOVE T1,T1		;GET TEXTI BLK PTR
	TXNE P5,TXTI		;TEXTI
	UMOVEM P4,.RDDBP(T1)	;YES, POINTER TO BLK
	RET			;AND DONE

STP3:	TXNE P5,INTT		;INTERNAL?
	RET			;NOTHING TO DO
STP3NI:	TXNE P5,RTTY		;RDTTY?
	XCTU [HRRM P3,T2]	;YES, COUNT TO T2
	TXNE P5,RTXT		;RDTXT?
	XCTU [HRRM P3,T3]	;YES, COUNT TO T3
	UMOVE T1,T1		;GET TEXTI BLK PTR
	TXNE P5,TXTI		;TEXTI?
	UMOVEM P3,.RDDBC(T1)	;YES, COUNT TO BLK
	RET			;AND DONE
;CURSOR CONTROL FUNCTIONS FOR DISPLAY TERMINALS

;CURSOR UP ONE LINE

CURUP:	HRRZ A,P1		;GET OUT JFN
	RFPOS			;GET POSITION
	TLNE 2,-1		;A NON-ZERO POSITION?
	SUB 2,[1,,0]		;YES. DECREMENT LINE NUMBER
	SFPOS			;SET NEW POSITION
	MOVEI B,.MORLC		;READ LINE COUNTER
	MTOPR
	SOJ C,			;DECREASE IT
	MOVEI B,.MOSLC
	MTOPR			;TELL SYSTEM DECREASED VALUE
	CALL CLRLIN		;CLEAR LINE BEFORE UPPING CURSOR
	HRRZ A,P5		;GET ADDRESS ONLY
	MOVE A,.CURUP(A)	;GET APPROPRIATE STRING FOR TERM TYPE
	CALLRET DPCTL		;SEND IT

;ROUTINE TO BACK UP CURSOR OVER CHARACTER BEING DELETED, BUT DON'T
;NECESSARILY CLEAR THE CHARACTER. THIS ROUTINE IS PROVIDED FOR EFFICIENCY DURING
;WORD DELETE, IN WHICH IT IS FASTER TO NOT DELETE TO END OF PAGE FOR
;EVERY CHAR OF WORD BEING DELETED.  SUPPLY CHARACTER BEING DELETED IN A.

CURBKW:	MOVNI B,1		;-1 IN B TO MARK THAT PAGE CLEARS SHOULDN'T HAPPEN
	JRST CURBK0

;ROUTINE TO BACK UP THE CURSOR OVER A CHARACTER BEING DELETED.
;CALL IT WITH CHARACTER IN A.

CURBK:	MOVEI B,0		;MARK NOT DOING WORD DELETE
CURBK0:	STKVAR <CLMS,CTRLWF,ARMF>
	SETZM ARMF		;FIRST ASSUME NOT AT RIGHT MARGIN
	MOVEM B,CTRLWF		;REMEMBER WHETHER DOING PAGE CLEARS OR NOT
	CALL COLUMS		;SEE HOW MANY COLUMNS THIS CHARACTER TAKES UP
	 JRST RTYPES		;RETYPE LINE IF WE DON'T KNOW HOW MANY COLUMNS CHARACTER TAKES UP
	MOVEM A,CLMS		;REMEMBER HOW MANY
	CALL GETWTH		;GET WIDTH OF TERMINAL
	MOVE C,A		;REMEMBER IN C
	HRRZ A,P1		;GET OUT JFN
	RFPOS			;GET CURRENT POSITION
	HRRZ D,B		;MAKE SIGNED INTEGER
	JUMPE C,CURNRM		;COULDN'T BE AT RIGHT MARGIN IF ISN'T ONE
	CAML D,C		;ARE WE AT RIGHT MARGIN
	SETOM ARMF		;YES, REMEMBER
CURNRM:	SUB D,CLMS		;SEE WHAT EFFECT CHARACTER WILL HAVE
	JUMPL D,CURSPT		;JUMP IF BACKING UP REQUIRES GOING TO PREVIOUS LINE
	CAIN D,0		;SKIP IF THIS DELETION DOESN'T HIT LEFT MARGIN
	JRST [	CAMN P4,Q2	;YES. AT TOP OF BUFFER
		JRST .+1	;YES. DON'T DELETE ANY MORE
		XCTBU [LDB C,P4] ;NO. GET PREVIOUS BYTE
		CAIN C,.CHLFD	;AN EOL?
		JRST .+1	;YES. DON'T WRAP
		JRST CURSPT]	;NO, GO BACK TO END OF PREV LINE
	HRR B,D			;GET NEW LINE POSITION
	SFPOS			;SET NEW LINE POSITION
	SKIPE ARMF		;AT PHYSICAL RIGHT MARGIN?
	SOS CLMS		;YES, SO ONE LESS COLUMN TO BACK UP
CURBK1:	SOSGE CLMS		;DONE ENOUGH BACKING UP YET?
	JRST CURBK2		;YES
	HRRZ A,P5		;GET ADDRESS ONLY
	MOVE A,.CURBK(A)
	CALL DPCTL		;BACK UP ONE COLUMN
	JRST CURBK1		;LOOP FOR NUMBER OF BACKUPS NEEDED
CURBK2:	SKIPE CTRLWF		;DOING WORD DELETE?
	RET			;YES, SO DON'T CLEAR PAGE HERE
	CALLRET CLRLNQ		;NO, SO CLEAR LINE HERE (UNLESS RIGHT ON MARGIN!)

CURSPT:	MOVEI B,.CHCRT		;UNDOING LINE, SO CLEAR LINE WE'RE LEAVING
	CALL RDBOUT
	CALL CURUP		;GO BACK TO PREVIOUS LINE
	CALL RTYPES		;RETYPE THE LINE
	CALLRET CLRLNQ		;RETURN, MAYBE CLEARING LINE

;ROUTINE TO CAUTIOUSLY CLEAR TO END OF LINE ON SCREEN.  ROUTINE CLEARS
;LINE IF AND ONLY IF CURSOR ISN'T AT RIGHT MARGIN, FOR WHICH CASE
;CLEARING LINE MIGHT ERRONEOUSLY CLEAR VALID CHARACTER AT END OF LINE.

CLRLNQ:	CALL GETWTH		;GET WIDTH OF LINE
	JUMPE A,CLRLIN		;COULDN'T BE AT RIGHT MARGIN IF ISN'T ONE
	MOVE C,A		;SAVE WIDTH IN C
	HRRZ A,P1
	RFPOS			;GET CURRENT POSITION
	CAILE C,(B)		;MIGHT WE BE AT RIGHT MARGIN?
	CALL CLRLIN		;NO, SO IT'S SAFE TO CLEAR REST OF LINE WITHOUT LOSING CHARACTERS
	RET

;CLEAR FROM CURSOR TO END OF LINE

CLRLIN:	HRRZ A,P5		;GET ADDRESS ONLY
	MOVE A,.CUREL(A)	;GET ERASE LINE CODE
	CALL DPCTL		;GO ERASE IT
	RET			;ALL DONE
;ROUTINE TO SEND CONTROL SEQUENCES TO TERMINAL.  PUTS TERMINAL
;IN BINARY MODE WHILE SENDING

; A/ BYTE (8)C,C,..  OR  Z [BYTE (8)C,C,..]
;	CALL DPCTL
; RETURN +1 ALWAYS, TERMINAL MODES PRESERVED

DPCTL:	TXNN F,RD%JFN		;HAVE JFNS?
	RET			;NO, DO NOTHING
	STKVAR <WRD,PWRD,MD>
	MOVEM A,WRD		;SAVE WORD
	TLNE A,-1		;HAVE WORD OR POINTER?
	MOVEI A,WRD		;WORD, MAKE POINTER TO WORD
	HRLI A,(POINT 8,0)	;CONSTRUCT POINTER TO STRING
	MOVEM A,PWRD		;SAVE IT
	HRRZ A,P1		;GET OUT JFN
	RFMOD			;GET CURRENT TERM MODES
	TXO B,TT%IGN		;DON'T CHANGE WAKEUP BITS
	MOVEM B,MD		;SAVE
	TXZ B,TT%DAM		;SET TO BINARY
	SFMOD
DPCTL1:	ILDB B,PWRD		;GET BYTE
	CAIE B,.STP		;STOP CODE?
	JRST [	SKIPE ADDPAR	;ADDING PARITY TO THIS LINE?
		CALL TTCMPP	;COMPUTE PARITY FOR THIS CHARACTER
		BOUT		;NO, SEND IT
		JRST DPCTL1]
	MOVE B,MD		;RESTORE TERM MODES
	SFMOD
	RET

;ROUTINE WHICH TAKES CHAR IN A, AND RETURNS IN A THE NUMBER OF COLUMNS
;USED TO PRINT THAT CHARACTER ON THE PAPER.  SKIPS IF KNOWS.

COLUMS:	STKVAR <CCHRX>
	MOVEM A,CCHRX		;REMEMBER THE CHARACTER
	CAIL A,40		;CONTROL CHARACTER?
	JRST COLNC		;NO
	CALL GETCOC		;GET CONTROL BITS FOR CHARACTER
	MOVE B,CCHRX		;GET THE CHARACTER
	JUMPE A,COL0		;IF NOT BEING DISPLAYED, CHAR TAKES NO COLUMNS
	CAIN A,1		;BEING SHOWN AS UPARROW-CHARACTER?
	JRST COLUP		;YES, UPARROW-CHARACTER
	CAIN B,.CHTAB		;IS CHARACTER A REAL OR SIMULATED TAB?
	JRST COLTAB		;YES, GO FIGURE IT OUT
	CAIN A,2		;SENDING ACTUAL CODE?
	JRST COLDN		;YES, SO WE DON'T KNOW HOW MANY COLUMNS IT TAKES
	CAIN B,.CHESC		;IS CHARACTER ALTMODE?
	JRST COL1		;YES, SO SIMULATE WITH ONE POSITION
COLDN:	RET
COL1:	MOVEI A,1		;FOR CHARS TAKING ONE COLUMN
	RETSKP
COL2:	MOVEI A,2		;TWO COLUMNS
	RETSKP
COL0:	MOVEI A,0		;CHARACTERS THAT TAKE NO COLUMNS
	RETSKP
COLNC:	CAIN A,.CHDEL		;RUBOUT?
	JRST COL0		;YES, TAKES NO COLUMNS
	CAIL A,101		;UPPERCASE LETTER?
	CAILE A,132
	JRST COL1		;NO, ASSUME 1 COLUMN FOR EVERYTHING ELSE
	HRRZ A,P1
	RFMOD			;GET MODE WORD
	TXNE B,TT%UOC		;FLAGGING UPPERCASE LETTERS?
	TXNE B,TT%LCA		;AND NO LOWERCASE?
	JRST COL1		;NO TO EITHER, ONLY TAKES ONE COLUMN
	JRST COL2		;YES TO BOTH, CHARACTER TAKES 2 COLUMNS
COLUP:	MOVE A,CCHRX		;GET CONTROL CHARACTER
	ADDI A,100		;SEE WHICH CHARACTER BEING "CONTROL"ED
	CALL COLUMS		;SEE HOW MANY COLUMNS THAT CHARACTER TAKES
	 JRST COLDN		;CAN'T COMPUTE IF DON'T KNOW HOW TO PRINT THING BEING CONTROLED
	AOJ A,			;ADD 1 FOR THE UPARROW (CONTROL-B WHEN
	RETSKP			;FLAGGING ON TAKES 3 COLUMNS!!)

;CHARACTER IS TAB.  FIGURE OUT HOW MANY COLUMNS IT TAKES BY COUNTING
;COLUMNS FROM BEGINNING OF LINE.

COLTAB:	CAMN Q2,P4		;IS THERE AT LEAST ONE CHAR LEFT IN BUFFER?
	JRST COLT2		;NO
	XCTBU [LDB A,P4]	;YES, GET CHARACTER BEFORE THE TAB
	CAIE A,.CHLFD		;IS TAB FIRST CHAR ON LINE?
	JRST COLT2		;NO
	MOVEI A,8		;YES, SO TAB TAKES 8 COLUMNS
	RETSKP
COLT2:	CALL MEASUR		;MEASURE LENGTH OF LINE IN PHYSICAL COLUMNS
	 JRST COLDN		;CAN'T, SO GIVE UP
	MOVE B,A
	ADDI A,8
	TRZ A,7			;SEE WHAT COLUMN TAB BROUGHT US TOO
	SUB A,B			;CALCULATE COLUMNS TAKEN BY TAB
	RETSKP			;DONE!

;ROUTINE TAKING CONTROL CHARACTER IN A AND RETURNING 2-BIT COC FIELD
;FOR THAT CHARACTER IN A.

GETCOC:	DMOVE B,OURCOC		;GET BITS
	LSH A,1			;GET NUMBER OF PLACES TO SHIFT
	LSHC B,(A)		;LEFT-JUSTIFY BITS IN B
	LDB A,[420200,,B]	;GET CORRECT BITS
	RET

;ROUTINE TO GET WIDTH OF LINE.  SUBROUTINIZED SO THAT WHEN SOMEONE
;DECIDES TO FIX PROBLEMS ASSOCIATED WITH GETTING WIDTHS OF NONTERMINALS,
;THE FIX WILL ONLY NEED TO BE MADE IN ONE SPOT.  THIS ROUTINE RETURNS
;WIDTH IN A.

GETWTH:	MOVEI A,0(P1)		;NO
	MOVEI B,.MORLW		;GET WIDTH OF LINE
	MTOPR			;GO GET IT
	MOVE A,C		;RETURN WIDTH IN A
	RET
;ROUTINE TO MEASUR PHYSICAL COLUMNS TAKEN UP BY LINE.  RETURNS VALUE
;IN A.
;SKIPS IFF SUCCESSFUL IN MEASURING LENGTH OF LINE
;CR AND LF ARE IGNORED DURING THE CALCULATION.  (THAT IS SO THAT WHEN
;DOING ^R TO REPRINT PREVIOUS LINE AFTER CR HAS BEEN TYPED, LENGTH OF
;PREVIOUS LINE GETS RETURNED BY THIS ROUTINE REGARDLESS OF THE TERMINAT-
;ING CR)

MEASUR:	SETZM CCNT		;INITIALIZE THE COLUMN COUNTER
	CALL FNDLIN		;FIND BEGINNING OF LINE
	 MOVE A,Q2		;USE BEGINNING OF BUFFER IF THAT'S WHERE WE ARE
	MOVEM A,CCPTR		;SAVE POINTER TO LINE TO BE SCANNED
	CAMN A,Q2		;IS THIS LINE FIRST ONE OF BUFFER?
	 JRST COLTR		;YES, MUST SCAN ^R BUFFER TOO
COLT1:	MOVE A,CCPTR
	CAMN A,P4		;HAVE WE SCANNED ENTIRE LINE YET?
	JRST COLTE		;YES
	XCTBU [ILDB A,CCPTR]	;NO, GET NEXT CHARACTER FROM BUFFER
	CALL COLACC		;ACCOUNT FOR THIS CHARACTER
	 JRST COLDN		;DO THE "DON'T KNOW" CASE
	JRST COLT1		;LOOP FOR REST OF LINE
COLTE:	MOVE A,CCNT		;RETURN COLUMN VALUE IN A
	RETSKP

COLTR:	SKIPN A,Q1		;FIRST LINE OF BUFFER.  IS THERE A ^R BUFFER?
	JRST COLT1		;NO
	MOVEM A,CRPTR		;YES, REMEMBER POINTER TO IT
COLR1:	MOVE A,CRPTR		;GET POINTER TO ^R BUFFER SO FAR
	CAMN A,Q2		;HAVE WE HIT BEG OF BUFFER?
	JRST COLT1		;YES
	XCTBU [ILDB A,CRPTR]	;GET NEXT CHARACTER FROM ^R BUFFER
	JUMPE A,COLT1		;LEAVE LOOP IF DONE
	CALL COLACC		;ACCOUNT FOR CHARACTER
	 JRST COLDN		;DO THE DON'T KNOW CASE
	JRST COLR1		;DO REST OF CHARACTERS IN ^R BUFFER

;SUBROUTINE USED FROM ABOVE TO ACCOUNT FOR A CHARACTER SCANNED IN THE
;LINE
;GIVE IT CHARACTER IN A.
;SKIPS IFF KNOWS HOW TO ACCOUNT FOR CHARACTER.

COLACC:	CAIN A,.CHTAB		;A TAB?
	JRST COLTI		;YES
	CAIE A,.CHCRT		;END OF LINE?
	CAIN A,.CHLFD
	RETSKP			;YES, IGNORE IT
	CALL COLUMS		;NO, SEE HOW MANY COLUMNS IT TAKES
	 RET			;NON-SKIP IF FUNNY CHARACTER
	ADDB A,CCNT		;ADD NUMBER OF COLUMNS IT TAKES
	RETSKP

COLTI:	MOVE A,CCNT		;TAB SEEN DURING SCAN, GET CURRENT COUNT
	ADDI A,8		;SEE WHERE TAB BRINGS IT
	TRZ A,7
	MOVEM A,CCNT
;	IDIVI A,^D72
;	CAIL B,^D60		;NEAR RIGHT MARGIN?
;	RET			;YES, SO GIVE UP, SINCE STRANGE THINGS
				;HAPPEN LIKE LINEWRAPPING, OR VT05S WHICH
				;TYPE ONLY ONE SPACE ON TABS NEAR RIGHT MARGIN
	RETSKP

	TNXEND
	END