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Diffstat (limited to 'src/cmd/troff/FIXES')
| -rw-r--r-- | src/cmd/troff/FIXES | 821 |
1 files changed, 821 insertions, 0 deletions
diff --git a/src/cmd/troff/FIXES b/src/cmd/troff/FIXES new file mode 100644 index 00000000..5765832c --- /dev/null +++ b/src/cmd/troff/FIXES @@ -0,0 +1,821 @@ +March 11, 1994 + + If we are just plain old nroff (and not doing UNICODE) we should + only Lookup characters, not Install when we don't know them. + If we are troff, we Install them anyway + +March 8, 1994 + + Nroff had problems with parsing quoted white space as options or + character code in some terminals tables. Changed by having scanf + include white space when necessary as suggested by Rich. + +March 1, 1994 + + Made sanity check for terminal type depending on the trace level; + trace level set with -tn flag at start up + +22 Feb, 1994 + + More pointer shuffling fixes. + +18 Feb, 1994 + + More disabling of multibyte stuff. Fixed bug in n5.c: casetm didn' + know about the new format in the fontables. + +Feb 17, 1994 + + Removed extra include <setlocale> from n1.c + + Fixed dubious pointer shuffling in n7.c, t10.c & n8.c. Thanks Rich! + +Feb 10, 1994 + + Disabled the multybyte stuff; only plan 9 will get it. + +Jan 24, 1994 + + Fixed nasty bug discovered by td, which caused core dumps on + \D'l-0.002775i 0i' and apparently all numbers closer to 0 + than -.002775. Fixed in storeline() and storeword() (n7.c). + +Dec 16, 1993 + + nroff & troff -N were looking for the TYPESETTER variable, causing + + troff: cannot open /sys/lib/troff/term/tab.202; line 1, file stdin + + fixed my moving getenv("TYPESETTER") to t10.c in t_ptinit(void). + +Dec 3, 1993: + + The sequence \s+2\H'+10' came sometimes out in the wrong order + (x H before s), so there wasn't a difference bewteen \s+2\H'+10' + and \H'+10'\s+2. Now the fonts bits of the CHARHT are used to + register the current pontsize, so we can issue a s10 in t10.c + if needed. A bit sneaky. + + Try to prevent double slashes in path names. Especially under + plan9 things started to look ugly. + + Exception word list now grows dynamic. + +Nov 30, 1993: + + Allow multiple calls to .pi, requested by Rob. + .pi cat + .pi dogs + is now equivalent with + .pi cat | dogs + + + .ab now takes also optional error code: + .ab [n] [string] + If n and string, n is exit code, string is message + If n, n is exit code, ``User Abort, exit code n" is message + If !n and string, standard exit code, string is message + If !n and ! string, standard exit code, "User Abort" is message + +Nov 24, 1993: + + Reordered code to keep the UNASNI scripts happy. + + Nroff dumped core reading terminal tables: apparenty under plan 9, + scanf includes the '\n'; added test for '\0' in parse in n10.c. + + Relative tab settings (.ta +1C +2C) didn't work; anding the + previous value with TABMASK fixes this (caseta). + +Nov 23, 1993: + + Included code, originally done by bwk for plan 9, to handle + multi-byte characters. + +Nov 3, 1993: + + ``pair internal'' two char names by shifting 16 bits. Will allow + the use of 16 bit characters sets (Unicode in plan9 etc.) for + macro's etc. + +Oct 20, 1993: + + Word & line buffers are now dynamic: No more word or line overflow + unless when we run out of memory. + +Oct 11, 1993: + + lost diversion warning pops up regularly with man macro's. Due + to a possible macro coding problem. Triggered by something like + troff -man: + .TP + .TP + foo + .ex + Minimal code: + .di aa + throw away this diversion (aa) while being defined. + .rm aa + .br + .di + + Fixed by disallowing .rm to throw away current diversion. The + rn request will complain with: + + cannot remove diversion aa during definition; etc. + +Sep 29, 1993: + + Some long standing fixes which never went back in the source. + Thanks to Janet & Rich. + +Sep 28, 1993: + + Changed getach() (n1.c), so it does't consider truncated + special characters as (8-bit) ascii. STX ETX ENQ ACK and BELL + are still allowed for the ultimate backwards compatibility. + + Some code changes, so real ANSI compilers like the SGI version + (acc from Sun is a poor excuse for an ANSI compiler) don't + barf. Some compromises (static Tchar wbuf in n9.c) allowed so + the unansified stuff for non-ansi compilers (cc on Sun's) will + work as well. + +Sep 9, 1993: + + Be nice to Gerard. Now also word spaces in .tl and after + tabs/fleids etc. + +Aug 12, 1993: + + Tabs setting can now be humongous. We also allow 99 tabs to + accomodate tbl. As a side effect, NTM buffers are now 1K + +Aug 11, 1993: + + .R register, now contains maximum number of addessable + registers minus the number actually used. + + Small esthetic changes in error messages; removed a statement + which wasn't reached anyway. + +Aug 10, 1993: + + Some more speed hacks: be smarter doing the linear table + lookups in alloc() and finds(). + + The real name of the det diversion size macro is now gd. + +Aug 9, 1993: + + A much faster way to find the end of a string/macro, by + remembering that when defined. + +Aug 6, 1993: + + Slightly more eficient way of skipping to the end of a + string/macro + +Aug 5, 1993: + + Prevent character sign extension for 8-bit charnames diversions + etc. by unpair + +Aug 4, 1993: + + Growing the dynamical macro/strings name space and registers + space (See the experiment of 21 July) now with bigger + increments. Casts added to satisfy non-ANSI compilers. + +Aug 3, 1993: + + Should check return value in alloc (n3.c), to prevent core dump + when memory gets tight. + +July 28, 1993: + + New request: .sg <div> sets the dn and dl registers to the size + of the diversion named in the argument. Doesn't do anything + when the named diversion doesn't exist. The name sg is + temporary until we find a better one. + +July 21, 1993: + + Experiment: Macro space & registers name allocated + dynamically. Note that current reallocation occurs in + increments of 1, to force the code to be executed a lot; a kind + of stress testing. Also, eight bit characters allowed in + macro/string names. + +July 21, 1993: + + Turn on the escape mode if the end macro is called. + +July 20, 1993: + + Tracing mode now default off + + Don't print s stackdump either when a file specfied on the + command line argument cannot be opened + +July 15, 1993: + + Don't print useless line & current file informations when a + file specfied on the command line argument cannot be opened. + + Sun ansi compiler doesn't default adhere to standards. Undid + the kludge in tdef.h + +July 14, 1993: + + Coding error made the tab type R not function properly + +July 12, 1993: + + Fixed a typo in the version stuff, noticed by Rich + +July 9, 1993: + + Added the dwb home configuration stuff, thanks RIch. Also, + NCHARS is big enough. Added a fflush to casetm, so .fm <file> + will be up to date. + +June 25, 1993 (Rich): + + -t option + + reinstated for the sake of compatibility. Some old + shells scripts and man(1) from SunOs want this, sigh + + Compiler and system dependencies + + Some systems pull in sys/types.h via #include <time.h> and then + the compiler complains about two ushort typedefs. Therefore, + ushort is now Ushort (and uchar Uchar). + + The SVID specifies a strdup, POSIX doesn't, anyway, troff + provides its own version, slightly different then the standard + one. A To prevent name clashes with that definion, renamed to + strdupl. + +June 24, 1993 (Rich): + + -V option added for DWB3.4 (rich) + +May 18, 1993: + + Trivial fix (.cf) request for troff -a + + issuing + + .cf /dev/null + + with troff -a gives some spurious output: + + H720 + H720 + s10 + f1 + + fixed by checking for ascii mode it ptesc(), ptps() and + ptfont() in t10.c + + + Enhancement + + Added a .tm request to roff. Works just like .tm, but now + it will do it to file. The name is coined by Carmela. Great + for creating indeces & toc's (we hope). + +May 18 1993: + + Compatibilty change + + Somebody complained that his favorite macro didn't work: + it had a BELL (^G) in the name. This was a non-documented + feature of earlier versions of troff (although the + documentation actually doesn't say that you can. (They can + only be used for delimiters or with the tr request), so it + isn't that important). + + But the sake of eternal backward compatibilaty I allowed + some control characters like, STX, ACK, etc. also be part + of a macro/string name. + + While at it, I made it also possible to have eight bit + characters be part of the name. It might be that this screws + up the way users think about these things. For UNICODE + versions, they probably want to do that as well, and that + won't work as easy, (because these characters are 16-bits + wide), so it is dubious whether we actually want this. + + BTW. Now + + .de \(ts\ts + .tm terminal sigma macro + .. + .\(ts\(ts + + also works, as long the internal cookie for ts isn't more then + eight bits. + +May 12, 1993: + + Syntax change + + Some requests accept tabs as a separator, some don't and + this can be a nuisance. Now a tab is also recognized as + an argument separator for requests, this makes + + .so /dev/null + + works. + + To be more precise, any motion character is allowed, so + + .so\h'5i'/dev/null + + will work as well, if one really wants that. + + It will be a problem for users who really relied on this as in + + .ds x string + + and expect the tab to become part of the string a, but I haven't + seen any use of that (obscure trick). + +May 6, 1993: + + Eileen count fixed + + Troff sometimes went in a loop, and exited with: ``job + looping; check abuse of macros'' (also known as the Eileen's + loop). It can be forced with the next trivial programme: + + .de ff + .di xx + .. + .wh -1 ff + .bp + + Basically what happens is that a page transition now will + happen in a diversion, which doesn't make sense. Wat really + happens is that eject() (in n7.c) doesn't eject the frame + because we are in a diversion. This cause the loop in n1.c + (because now always stack->pname <= ejl). Adding check on + whether we are not in a diversion takes care of the problem. + +March 30, 1993: + + Need request, .ne + + When there is a begin of page trap set, and the first thing + in the file is a .ne request, the trap gets fired, but, + the x font R etc. cookies doen't come out, because the + troff thinks that the first page pseudo transition already + took place. Fixed by forcing the start of the first page + in the casene request with the same code as in casetl (which + caused a similar problem quite some time ago). + + Change to .cf request ``Here document'' + + If the argument of .cf starts with a <<, the rest of it is taken + as an EOF token. It will reat the rest of the input until it hits + the EOF token and copies it to the output. This is similar as + the shell's ``here document'' mechanisme and put in place to + improve the kludgy way picasso, picpack etc. now include + postscript. + + Using troff -TLatin1 (DWB version) and \N'...' caused core dump + + In t11, in chadd, it should test on NCHARS - ALPHABET to see + whether we run out of table space (and we probably should beaf + up NCHARS for the DWB version). + +March 16, 1993: + + Diversion rename bug fix + + It is possible to get troff in an infinite loop by renaming a + diversion in progress, and calling it later with the + new name (as in .di xx, .rn xx yy, .yy). The effect depends on + whether troff already put stuff in the diversion or not. + + Fix by having .rn also rename the current diversion (if + there is any and when appropriate). If the diversion calls + itself by the new name and given the fix made on 11 nov + 1992, this will now result in an error. (BTW, the fix from + 11 nov is improved: diversions nest, so we have to account + for that). + +December 18, 1992: + Some people have complete novels as comments, so we need + to skip comments while checking the legality of font files. + thaks Rixh + +December 16, 1992 + + Some people rely on the order that -r arguments are given, + so that troff -rC1 -rC3 ends up setting register C to 3. + Because cpushback() pushes things in a LIFO order back, we + have to do the same to get -r args in a FIFO order. + +Nov 17, 1992: + + Giving a -rL8 option cuased the string .nr L 8 to be printed + on the output, using the wonderful 3b2. Some garbage was + left in buf[100] in main(). Fixed by setting buf[0] explicitly + to 0 (because some C-compilers complain about ``no automatic + aggregate initialization''). + +Nov 11, 1992: + + Diversion bug fix + + If a diversion was being read and the input is faulty so + the diversion was reading in itself, it caused troff to + loop undefinitely. This was easily fixed by a test in + control(a,b) in n1.c. + + Something similar things might happen with macros causing + the ``eileenct problem'', but I didn't look for that. We + have to wait until it happens. + +Oct 26, 1992: + + Numeric arguments: + + Illegal argments are treated as missing arguments. This + changed the semantics of .ll, .ls, .in, .lg, .ul, .cu .lt + (which acted as if the argument was 0) and .ps which was + simply ignored with an illegal argument. + + Tidied up number parsing in atoi1(). This prevents arguments + like .x or 1.2.3.4 being interpret as a legal number (nonumb = 0) + + Numeric arguments error reporting: + + Controlled by .pt, illegal numbers are now reported (default + trace mode is 1). This is also true for the escapes: + \h'..', \v'..' \H'..', \S'..', \N'..', \D'..', \l'.., \L'.. + and \x'..'. + + \D'c' is the only drawing request which doesn't take a pair + of numbers as arguments, so a special case is put here in + setdraw() (This code actually could use an overhaul to get + better parsing. As long as the \D'..' cookies are machine + generated it is low on the priority list). + + Don't generate an error if the illegal argument to a request + is a \}. It is too painful to do right (although it can be + done, but it would clutter getch() and getcho() even more). + + Input line numbers (.c register) bug fixes: + + In not taken branches of .if or .ie, the input line # + (numtab[CD].val) should be raised when necessary (in eatblk()). + + For concealed newlines, we still should count the line for input. + + Setfield (n9.c) sometimes pushes the rest of the line back to + the input (including \n), without adjusting numtab[CD].val + + Because .c (and so numtab[CD].val) is the number of lines read + and the error might actually happen in the current line + (before seeing the '\n), we need to apply correction in + errprint when nlflg set. (This correction needs to be undone + when inside a macro because the nlflg is set by reading the + args to the macro). + + Line number setting (.lf) request bug fixes: + + I interpret that the .c register will contain the number of + read lines, not including the current one. + + Also, don't change the input line number when the first + argument of .lf is not a number. + + As a net effect, the next input + + .EQ + .EN + .ab + + will generate the same output whether eqn has been used or not. + + If request bug fix: + + A ``.if page .tm foo'' caused the next line being ignored; + This bcause when the 2nd delimiter of a string couldn't be + found in cmpstr, the next line was always eaten. Solution: + in caseif1, if the condition is false, we should check + nlflg before eating a block. (Note: We might have eaten + \{\ as well. We could disallow the \{\ in a string to be + compared to prevent that but that might break other things). + + Enhancement to .pt: + + The .pt now pops the previous values when no argument is + specified. Turned out to be handy when chasing for problems. + Just ``bracked'' the code with .pt 7 and .pt and you get + a trace of only that block. The meaning of the arguments + is now: + 01 trace numeric arguments (default on) + 02 trace requests + 04 trace macros + + Abort request (.ab) beautification: + + Don't print the extra carriage return when .ab is called + without an argument. + +Oct 12, 1992: + + (Comments & spelling errors from this day on by jaap) + + replaced 32767 by INT_MAX in several places to allow for very + long pages (on 32-but machines). + + The ``.fp 1 R \"COMMENT'' complains about ``./troff: Can't + open font file /usr/lib/font/devpost/h'' on some systems. It + sees the tab as part of the optional font file. Apparently it + is system dependent whether isgraph() includes the tab + character. Fixed by using getach() in getname() in n1.c + instead. + +Aug 28, 1992: + removed call to popi from rdtty(); it was eating up the + rest of the macro if it was used from within one. (thanks, jaap) + + +Jul 21, 1992: + added extra test in nextfile() to pop current input file + only if not in .nx command. thanks to jaap. + + added test in getword() to avoid hyphenating after \z character, + which prevents any hyphenation inside \X'...'. thanks to jaap. + + added, then removed, code in getword() to prevent hyphenating + anything shorter than 6 characters. looks like it changed a + lot more than i thought. + +Jul 12, 1992: + added .pt request to trace macros and requests (from jaap). + .pt N Print trace of macros (N=1), requests (N=2) or both (N=3) + +Jun 5, 1992: + added tests to t.twrest and t.twinit to avoid 0 deref in + n2 and n10, for nroff -t xxxxx. thanks to Rich Drechsler. + +May 22, 1992: + added extern decls to e.g., void Tchar (*hmot)(void) in tdef.h + and added definition to ni.c, so pointers are defined explicitly. + makes it work on turbo c++ and probably others. + + changed a couple of isdigit's and isgraph(getch()) to avoid + multiple evaluation (even though it shouldn't happen). + + Made /usr/bin/nroff a shell script. + +May 12, 1992: + n1.c: need p++ after strrchr to skip / in program name. + thanks to Rich Drechsler. + +Apr 17, 1992: + casefi(), n5.c: .u register should be 0 or 1, not incremented + with each .fi. + +Apr 5, 1992: + fiddled n7.c and added _nmwid to the environment, to add a + 5th argument to .nm: the maximum number of digits in any + line number. default is 3, which was previously hardwired in. + + added jaap's code for yet another register which actually delivers + a string, called .S (so it can easily go in the switch in setn() + in n4.c); it delivers the current tabstop and alignment modes in + a format suitable for a subsequent .ta \n(.S command: + .ds T \n(.S + ... + .ta \*T + +Mar 30, 1992: + added test in getword to avoid hyphenating things with motions + (and avoid a core dump sometimes too). + +Mar 13, 1992: + \n(sb initialized wrong in setwd(). + + TYPESETTER=foo troff -Tpost used foo instead of post. + +Mar 12, 1992: + rearranged tests in popf so that .so is closed properly before + moving on to the next macro package. + +Mar 1, 1992: + input mechanism rearranged to use getc() instead of stack of + explicit input buffers. 5-10% slowdown. + +Jan 28, 1992: + fixed .tm \(mi to print something sensible. thanks to jaap. + +Jan 2, 1992: + fiddle setfp so doesn't put out font stuff if -a turned on. + +Dec 17, 1991: + copy 3rd argument in .fp commands to x font ... lines when it contains + a /, for testing fonts locally. + +Dec 13, 1991: + parameterize the font directories, etc., so can be set in makefiles. + added -N argument to run as nroff. + +Nov 8, 1991: + add a maplow(towlower...) in n8.c to handle brain-damaged libraries. + +Nov 2, 1991: + merged nroff into troff, based on Ken's plan 9 version. + merged nii.c into ni.c, removed tw.h, etc. more work needed + to make this stuff cleaner. + +July 27, 1991: + added test in setn in n4 to fix bug that permitted things like + \n (ab to work "properly". thanks to jaap for finding and fixing. + + added paranoid testing in t11 to make sure font files look ok. + +May 13, 1991: + moved evaluation of \(xx from copy mode to non-copy mode, so that + weird character names wouldn't get reevaluated in argument parsing. + installed july 27. + +May 6, 1991: + increased size of hyphenation exception buffer to 512 from 128 + +Apr 14, 1991: + added an extra redundant call of ptfont in setfp, since it appears + that some versions of adobe transcript assume that an "x font" command + means to change the actual font as well. the fix preserves the current font. + thanks to david brailsford and friends for spotting the problem. + + fixed up tests in alpha() in n8 to defend isalpha() against too-big inputs. + punct() argument had wrong type too. thanks to rich drexler and peter nelson. + +Mar 19, 1991: + fixed bug that prevented .rd from working with new corebuf organization. + + fixed bug that caused .ig inside diversions to give bad storage + allocation. thanks to arthur david olson, whose fix was on netnews + 3 years earlier. + +Mar 5, 1991: + huge table sizes for kanji. + +Feb ??, 1991: + working on dealing with large alphabets, notably kanji. + added "defaultwidth" to font descriptions, for characters + not given an explicit width. + +Jan, 1991: + added tex hyphenation, using standard tex data files, but not the + elaborate compressed trie, which is a lot of trouble to save maybe + 40k bytes. this appears to run at exactly the same speed as before. + + so far this stuff reads into a fixed size array; that should change. + it should also be possible to deal with multiple languages. + + the command .ha sets the algorithm. .ha 1 => tex, with troff rules + if tex doesn't hyphenate; .ha 0 gives troff rules, and .ha resets + to the default, which is tex. the hyphenation algorithm is part of + the environment, a nod to a future in which i handle more than one + language. + + replaced the fixed size corebuf array for string/macro storage by + a dynamic structure that can grow. + + this appears to slow things down by maybe 3%. the code is about + the same complexity. + +Dec 27, 1990: + converted to ansi c, based on some work by ken thompson, but not + as thoroughly as he did. there is a shell script unansi and an awk + program cvt that will help you step back in time if you do not have + an ansi c compiler. + + moved the special-name characters up to 256 instead of 128, although + done in terms of ALPHABET, so one can pass 8 bit characters through. + removed lots of 0177's and similar numbers. input is now not filtered, + and if a character with the 8th bit on comes in, it will go out again. + + fixed t11.c to read character names in hex or octal as well as + single-character ascii. + + unknown characters are now carried through with width = spacewidth. + needs a way to set widths. + + removed all signal handling from troff. you signal, you die. + + added -d option to print version number. + +Dec 7, 1990: + .fp 3 V VERYLONGNAME used to truncate the name to 10 chars; fixed. + + increased the limit on FBUFSZ for tables with very long fields. + + changed atoi1() to use double to avoid intermediate overflow. + + moved filenames like /usr/lib/font into tdef.h for easy change. + removed some dreggish definitions. + + cleaned up non-portable error printing stuff; fixed up some messages. + +Dec 12, 1989: + Removed the .! command, an undocumented synonym for .sy. + +Dec 4, 1989: + Another wart to the \X code, to try to preserve blanks in all situations. + +Nov 17, 1989: + A number of small changes preparatory to getting rid of nroff. + The argument -Tnroff or -Tnroff-12 changes some internal values + so that the predicate .if n is true and certain arithmetic operations + are done as if nroff. This design is not yet final. + +Nov 7, 1989: + Fixed hyphenation for nov-ice, ad-vice, de-vice, ser-vice, *-vice. + +Oct 11, 1989: + It is now permitted to do an explicit change to font S. + It is not clear what will break (though nothing seems to have). + +Oct 10, 1989: + Modified flush code to always put out \nH instead of sometimes h. + This makes it easier to parse the output for positioning. + +Sep 9, 1989: + Fixed internal representation of \D'~...' so that it + is immune to .tr ~ and variations. No external change. + +Aug 9, 1989: + Changed .tm so it outputs \e, \%, \-, \&, \(blank). + This might break indexing code. + Only in the new version, as are all subsequent fixes. + +July, 1989: + A major internal change: font information is read in ascii + instead of the weird binary format of makedev (which is now dead). + character names need not all appear in DESC; new names that + appear when a font is used become part of the set of known names. + + There are some flaky bits here (it's conceivable that some \N + number will collide with a real name), and it's probably 10-15% + slower. Tant pis. + + As a by-product, nroff no longer compiles. I'll probably get + back to this, but an alternative is to bag it once and for all. + +May 25, 1989: + Another bug in \l, this time when width is 0. Not installed, + since it's in the new font version. + +Apr 23, 1989: + Fixed bug in n9 that caused core dump with unterminated + \l command, like \l'1.5i + + ptflush no longer called when -a is on. + +Apr 12, 1989: + fixed bug in n2 that failed to suppress printing of \! + output when a -o was in effect. + +Apr 5, 1989: + .fl and \X now cause output of size, font, hpos and vpos. + this is necesary for postprocessors that intend to insert + independent material, such as postscript. + +Feb 1, 1989: + wait for .pi pipe to empty before exiting + +Oct 2, 1988: + default is now -Tpost + +Sep 19, 1988: + added abortive code to handle built-up characters by + passing something through as \D'b...'. never used. + +Jul 4, 1988: + replaced the sbrk nonsense in n3.c by calls to malloc. + + \N now tests against proper font size. + + installed Jaap Akkerhuis's code (mutatis mutandis) for + permitting up to 99 fonts, swapping them into font pos 0 + as needed. fixes the long-standing problem of having + multiple font changes on a single output line. + +Jul 2, 1988: + \X now preserves spaces even when contents are diverted. + + \N code safer -- NTRTAB and NWIDCACHE enlarged. + +Jul 14, 1987: + Fixed obscure bug causing incorrect indentation of .mc output. |