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Diff for /mandoc/TODO between version 1.2 and 1.89

version 1.2, 2010/05/15 09:28:11 version 1.89, 2011/02/03 10:24:21
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 ************************************************************************  ************************************************************************
   * Official mandoc TODO.
   * $Id$
   ************************************************************************
   
   ************************************************************************
   * parser bugs
   ************************************************************************
   
   - It should be noted that in mandoc, the TBL macros are interpreted as
     real roff macros (e.g., `.  TS' is ok), while the troff preprocessor
     only looks for `.TS' (static string).  This should be noted in the
     COMPATIBILITY section.  The same applies for nascent `.EQ' (as it is
     now, `.EN' is processed as a static string).
   
   - .TP before .SH is still FATAL in man(7)
     reported by brad@  Sat, 15 Jan 2011 15:54:54 -0500
   
   - The mdoc(7) parser should handle `\.' as punctuation:
       .Ql .if ${VAR} op something \.
     should produce
       `.if ${VAR} op something'.
     not
       `.if ${VAR} op something .'
     as seen in make(1).
     To escape the dot, one would use `\&.'.
   
   - the roff parser doesn't tolerate additional characters between
     a macro and the \} terminating a conditional block, e.g.
     .if n \{
     .br \}
     reported by ulrich spoerlein  Tue, 19 Oct 2010 20:39:50 +0200
   
   ************************************************************************
   * formatter bugs
   ************************************************************************
   
   ************************************************************************
 * missing features  * missing features
 ************************************************************************  ************************************************************************
   
 - explicit blocks with missing end macro should be implicitely closed  --- missing roff features ----------------------------------------------
   at the end of the enclosing block, e.g. .Bl It (El) Sh  
   reminded by stsp@  in net/pptp pptp.8  Fri, 23 Apr 2010 20:32:39 +0200  
   
   - .ad (adjust margins)
     .ad l -- adjust left margin only (flush left)
     .ad r -- adjust right margin only (flush right)
     .ad c -- center text on line
     .ad b -- adjust both margins (alias: .ad n)
     .na   -- temporarily disable adjustment without changing the mode
     .ad   -- re-enable adjustment without changing the mode
     Adjustment mode is ignored while in no-fill mode (.nf).
   
   - .it (line traps) occur in mysql(1), yasm_arch(7)
     generated by DocBook XSL Stylesheets v1.71.1 <http://docbook.sf.net/>
     reported by brad@  Sat, 15 Jan 2011 15:48:18 -0500
   
   - .ns (no-space mode) occurs in xine-config(1)
     reported by brad@  Sat, 15 Jan 2011 15:45:23 -0500
   
   - xloadimage(1) wants .ti (temporary indent), rep by naddy@
   
   - .ta (tab settings) occurs in ircbug(1) and probably gnats(1)
     reported by brad@  Sat, 15 Jan 2011 15:50:51 -0500
   
   - pod2man expects `tr' to be implemented for \*(-- to work
   
   - \c (interrupted text) occurs in chat(8)
   
   --- missing mdoc features ----------------------------------------------
   
   - fix bad block nesting involving multiple identical explicit blocks
     see the OpenBSD mdoc_macro.c 1.47 commit message
   
 - .Bl -column .Xo support is missing  - .Bl -column .Xo support is missing
   ultimate goal:    ultimate goal:
   restore .Xr and .Dv to    restore .Xr and .Dv to
Line 13 
Line 78 
   lib/libc/gen/signal.3    lib/libc/gen/signal.3
   lib/libc/sys/sigaction.2    lib/libc/sys/sigaction.2
   
 - .Bk / .Ek is broken, e.g.  - edge case: decide how to deal with blk_full bad nesting, e.g.
   $ man ssh    .Sh .Nm .Bk .Nm .Ek .Sh found by jmc@ in ssh-keygen(1)
   [...]    from jmc@  Wed, 14 Jul 2010 18:10:32 +0100
   ssh [-1246AaCfgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec] [-D  
   [bind_address:]port] [-e escape_char] [-F configfile] [-I pkcs11]  
   reminded by Ludo Smissaert  Mon, 10 May 2010 12:15:11 +0200  
   also reported by jmc@ earlier  
   
 - man(7) .TH should recognize "3p" as a section number  - \\ is now implemented correctly
   found in usr.bin/pkg_add OpenBSD::Getopt    * when defining strings and macros using .ds and .de
     * when parsing roff(7) and man(7) macro arguments
     It does not yet work in mdoc(7) macro arguments
     because libmdoc does not yet use mandoc_getarg().
     Also check what happens in plain text, it must be identical to \e.
   
 - implement \\  - .Bd -filled should not be the same as .Bd -ragged, but align both
   in plain text, identical to \e    the left and right margin.  In groff, it is implemented in terms
   as a macro argument, identical to \ i.e. escaping the next character    of .ad b, which we don't have either.  Found in cksum(1).
   We do not have macro definitions yet; if we implement them,  
   \\ must behave in a macro def like in a macro argument,  
   and when using the macro, it must expand yet again.  
   
 - look at bsd.lv tbl(1)  - implement blank `Bl -column', such as
   from kristaps@  Fri, 11 Sep 2009 17:10:53 +0200    .Bl -column
     .It foo Ta bar
     .El
   
   - explicitly disallow nested `Bl -column', which would clobber internal
     flags defined for struct mdoc_macro
   
   - inside `.Bl -column' phrases, punctuation is handled like normal
     text, e.g. `.Bl -column .It Fl x . Ta ...' should give "-x -."
   
   - inside `.Bl -column' phrases, TERMP_IGNDELIM handling by `Pf'
     is not safe, e.g. `.Bl -column .It Pf a b .' gives "ab."
     but should give "ab ."
   
   - set a meaningful default if no `Bl' list type is assigned
   
   - have a blank `It' head for `Bl -tag' not puke
   
   - prohibit `Nm' from having non-text HEAD children
     (e.g., NetBSD mDNSShared/dns-sd.1)
     (mdoc_html.c and mdoc_term.c `Nm' handlers can be slightly simplified)
   
   --- missing man features -----------------------------------------------
   
   - bashbug(1) complains "line scope broken" after
     .SM
     .B something
     should either just work or be a warning
     reported by naddy@
   
   - groff an-ext.tmac macros (.UR, .UE) occur in xine(5)
     reported by brad@  Sat, 15 Jan 2011 15:45:23 -0500
   
   --- missing tbl features -----------------------------------------------
   
   - implement basic non-parametric .de to support e.g. sox(1)
     reported by naddy@ Sat, 16 Oct 2010 23:51:57 +0200
     *** sox(1) still doesn't work, tbl(1) errors need investigation
   
   --- missing misc features ----------------------------------------------
   
   - clean up escape sequence handling, creating three classes:
     (1) fully implemented, or parsed and ignored without loss of content
     (2) unimplemented, potentially causing loss of content
         or serious mangling of formatting (e.g. \n) -> ERROR
         see textproc/mgdiff(1) for nice examples
     (3) undefined, just output the character -> perhaps WARNING
   
   - The \t escape sequence is the same as a literal tab, see for example
     the ASCII table in hexdump(1) where
       .Bl -column \&000_nu \&001_so \&002_st \&003_et \&004_eo
       .It \&000\ nul\t001\ soh\t002\ stx\t003\ etx\t004\ eot\t005\ enq
     produces
       000 nul  001 soh  002 stx  003 etx  004 eot  005 enq
     and the example in oldrdist(1)
   
 - look at pages generated from reStructeredText, e.g. devel/mercurial hg(1)  - look at pages generated from reStructeredText, e.g. devel/mercurial hg(1)
   These are a weird mixture of man(7) and custom autogenerated low-level    These are a weird mixture of man(7) and custom autogenerated low-level
   roff stuff.  Figure out to what extent we can cope.    roff stuff.  Figure out to what extent we can cope.
     For details, see http://docutils.sourceforge.net/rst.html
   noted by stsp@  Sat, 24 Apr 2010 09:17:55 +0200    noted by stsp@  Sat, 24 Apr 2010 09:17:55 +0200
   reminded by nicm@  Mon, 3 May 2010 09:52:41 +0100    reminded by nicm@  Mon, 3 May 2010 09:52:41 +0100
   
   - check compatibility with Plan9:
     http://swtch.com/usr/local/plan9/tmac/tmac.an
     http://swtch.com/plan9port/man/man7/man.html
     "Anthony J. Bentley" <anthonyjbentley@gmail.com> 28 Dec 2010 21:58:40 -0700
   
 - FIXED OpenBSD term.h 1.16 term.c 1.30 mdoc_term.c 1.75 schwarze 23.4.10  
   handle tab characters outside literal context, e.g. usb(4)  
   reported by jmc@  Mon, 19 Apr 2010 07:42:12 +0100  
   NEEDS MERGING TO bsd.lv  
   
 - FIXED OpenBSD man.h 1.15 libman.h 1.16 man_hash.c 1.9  
   man.c 1.25 man_macro.c 1.15 man_validate.c 1.19 man_action.c 1.15  
   man_term.c 1.28 man_html.c 1.9 schwarze 25.4.  
   implement .if .ie .el  
   noticed by espie@  Fri, 23 Apr 2010 17:10:35 +0200  
   NEEDS MERGING TO bsd.lv  
   
   
 ************************************************************************  ************************************************************************
 * formatting issues: ugly output  * formatting issues: ugly output
 ************************************************************************  ************************************************************************
   
 - outside list context, text following .Sm off  - a column list with blank `Ta' cells triggers a spurrious
   seems to follow without a blank (TERM_NOBLANK reset late?) e.g.    start-with-whitespace printing of a newline
         .Sm off  
         .Xo  
         .Op Ar bind_address No /  
         .Ar port  
         .Xc  
         .Sm on  
         or by enclosing  
   reported by jmc Tue, 13 Apr 2010 08:48:14 +0100  
   
 - do not break the line after "--", it's probably a long option  - double quotes inside double quotes are escaped by doubling them
   reminded by stsp in net/pptp pptp.8  Fri, 23 Apr 2010 20:32:39 +0200    implement this in mdoc(7), too
     so far, we only have it in roff(7) and man(7)
     reminded by millert@  Thu, 09 Dec 2010 17:29:52 -0500
   
 - in .Bl -column .It, "\t" seems to be synonymous to " Ta ",  - perl(1) SYNOPSIS looks bad; reported by deraadt@
   see sysctl(3) for many examples;    1) man(7) seems to need SYNOPSIS .Nm blocks, too
   mishandling this results in spurious quotes at EOL  
   reminded by guenther@  Mon, 26 Apr 2010 01:16:52 -0700  
   
 - URGENT, this is making many kernel manuals look bad:  - In .Bl -column,
   .Ft/.Fn should MAYBE behave in custom section like in SYNOPSIS?    .It Em Authentication<tab>Key Length
   autoconf.9:    ought to render "Key Length" with emphasis, too,
     .Sh DIRECT CONFIGURATION    see OpenBSD iked.conf(5).
     .nr nS 1  
     .Ft "struct device *"  
     .Fn config_found_sm "struct device *parent"  
   groff:  
     DIRECT CONFIGURATION  
       struct device *  
       config_found_sm(struct device *parent, ...  
   reported by sthen  Tue, 20 Apr 2010 13:42:51 +0100  
   
 - indentation got lost in SYNOPSIS, e.g.  
    SYNOPSIS  
         date [-ajnu] [-d dst] [-r seconds] [-t minutes_west] [+format]  
   -          [[[[[[cc]yy]mm]dd]HH]MM[.SS]]  
   +     [[[[[[cc]yy]mm]dd]HH]MM[.SS]]  
   reminded by Ludo Smissaert  Mon, 10 May 2010 12:15:11 +0200  
   
 - empty phrases in .Bl column produce too few blanks  - empty phrases in .Bl column produce too few blanks
   try e.g. .Bl -column It Ta Ta    try e.g. .Bl -column It Ta Ta
   reported by millert Fri, 02 Apr 2010 16:13:46 -0400    reported by millert Fri, 02 Apr 2010 16:13:46 -0400
   
   - .%T can have trailing punctuation.  Currently, it puts the trailing
     punctuation into a trailing MDOC_TEXT element inside its own scope.
     That element should rather be outside its scope, such that the
     punctuation does not get underlines.  This is not trivial to
     implement because .%T then needs some features of in_line_eoln() -
     slurp all arguments into one single text element - and one feature
     of in_line() - put trailing punctuation out of scope.
     Found in mount_nfs(8) and exports(5), search for "Appendix".
   
   - in enclosures, mandoc sometimes fancies a bogus end of sentence
     reminded by jmc@  Thu, 23 Sep 2010 18:13:39 +0059
   
 ************************************************************************  ************************************************************************
 * formatting issues: gratuitious differences  * formatting issues: gratuitious differences
 ************************************************************************  ************************************************************************
   
 - in literal context, groff disables the right margin  - .Rv (and probably .Ex) print different text if an `Nm' has been named
   an example: syslog.conf.5 EXAMPLES section    or not (run a manual without `Nm blah' to see this).  I'm not sure
   reported by jmc Tue, 13 Apr 2010 10:12:15 +0100    that this exists in the wild, but it's still an error.
   solution: raise termp->maxrmargin in literal context  
   
 - lines containing blank characters, and nothing else,  - In .Bl -bullet, the groff bullet is "+\b+\bo\bo", the mandoc bullet
   in literal context (.Bd -literal):    is just "o\bo".
   groff outputs just blank lines "\n"    see for example OpenBSD ksh(1)
   mandoc outputs blanks to the left margin,  
   then the number of balnks minus one  
   
   - The characters "|" and "\*(Ba" should never be bold,
     not even in the middle of a word, e.g. ".Cm b\*(Bac" in
     "mknod [-m mode] name b|c major minor"
     in OpenBSD ksh(1)
   
   - A bogus .Pp between two .It must not produce a double blank line,
     see between -R and -r in OpenBSD rm(1), before "update" in mount(8),
     or in DIAGNOSTICS in init(8), or before "is always true" in ksh(1).
     The same happens with .Pp just before .El, see bgpd.conf(5).
     Also have `It' complain if `Pp' is invoked at certain times (not
     -compact?).
   
   - If the *first* line after .It is .Pp, break the line right after
     the tag, do not pad with space characters before breaking.
     See the description of the a, c, and i commands in sed(1).
   
   - If the first line after .It is .D1, do not assert a blank line
     in between, see for example tmux(1).
     reported by nicm@  13 Jan 2011 00:18:57 +0000
   
   - .Nx 1.0a
     should be "NetBSD 1.0A", not "NetBSD 1.0a",
     see OpenBSD ccdconfig(8).
   
   - In .Bl -tag, if a tag exceeds the right margin and must be continued
     on the next line, it must be indented by -width, not width+1;
     see "rule block|pass" in OpenBSD ifconfig(8).
   
   - When the -width string contains macros, the macros must be rendered
     before measuring the width, for example
       .Bl -tag -width ".Dv message"
     in magic(5), located in src/usr.bin/file, is the same
     as -width 7n, not -width 11n.
   
   - The \& zero-width character counts as output.
     That is, when it is alone on a line between two .Pp,
     we want three blank lines, not two as in mandoc.
   
   - When .Fn arguments exceed one output line, all but the first
     should be indented, see e.g. rpc(3);
     reported by jmc@ on discuss@  Fri, 29 Oct 2010 13:48:33 +0100
   
   - .Ns should work when called at the end of an input line, see
     the following code in vi(1):
       .It Xo
       .Op Ar line
       .Cm a Ns Op Cm ppend Ns
       .Op Cm !\&
       .Xc
       The input text is appended after the specified line.
   
   - Header lines of excessive length:
     Port OpenBSD man_term.c rev. 1.25 to mdoc_term.c
     and document it in mdoc(7) and man(7) COMPATIBILITY
     found while talking to Chris Bennett
   
   - In man(7), the sequence
       .HP
       one line of regular text
       .SH
     should not produce two blank lines before the .SH,
     see for example named-checkconf(8).
   
   - In man(7), the sequence
       regular text
       .RS
       .IP
     should have a blank line between the text and the beginning of the
     indented paragraph, see for example sudo(1).
   
   - At least sometimes, .sp is ignored right after .SH; see named.conf(5).
   
   - trailing whitespace must be ignored even when followed by a font escape,
     see for example
       makes
       \fBdig \fR
       operate in batch mode
     in dig(1).
   
 ************************************************************************  ************************************************************************
 * parser errors without any effect on formatting  * error reporting issues
 ************************************************************************  ************************************************************************
   
 - OpenBSD::PackageName(3p) has "if (block) 90:1" in the parse tree  ************************************************************************
   * performance issues
   ************************************************************************
   
   Several areas can be cleaned up to make mandoc even faster.  These are
   
   - improve hashing mechanism for macros (quite important: performance)
   
   - improve hashing mechanism for characters (not as important)
   
   - the PDF file is HUGE: this can be reduced by using relative offsets
   
   ************************************************************************
   * structural issues
   ************************************************************************
   
   - Find better ways to prevent endless loops
     in roff(7) macro and string expansion.
   
Legend:
Removed from v.1.2  
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  Added in v.1.89
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