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Diff for /mandoc/TODO between version 1.71 and 1.171

version 1.71, 2010/12/30 00:51:32 version 1.171, 2014/06/10 21:19:57
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 ************************************************************************  ************************************************************************
   
 ************************************************************************  ************************************************************************
 * parser bugs  * crashes
 ************************************************************************  ************************************************************************
   
 - the roff parser doesn't tolerate additional characters between  - The abort() in bufcat(), html.c, can be triggered via buffmt_includes()
   a macro and the \} terminating a conditional block, e.g.    by running -Thtml -Oincludes on a file containing a long .In argument.
   .if n \{    Fixing this will probably require reworking the whole bufcat() concept.
   .br \}  
   reported by ulrich spoerlein  Tue, 19 Oct 2010 20:39:50 +0200  
   
 - .BI "string string " word punct in gettext(3)  
   add bogus line breaks (rep by naddy@)  
   committed; currently working on IP and TP?  
   and what about B and I?  
   
 ************************************************************************  ************************************************************************
 * missing features  * missing features
 ************************************************************************  ************************************************************************
   
 - pod2man expects `tr' to be implemented for \*(-- to work  --- missing roff features ----------------------------------------------
   
 - explicit blocks with missing end macro should be implicitely closed  - .ad (adjust margins)
   at the end of the enclosing block, e.g. .Bl It (El) Sh    .ad l -- adjust left margin only (flush left)
   reminded by stsp@  in net/pptp pptp.8  Fri, 23 Apr 2010 20:32:39 +0200    .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).
   
   - .fc (field control)
     found by naddy@ in xloadimage(1)
   
   - .nr third argument (auto-increment step size, requires \n+)
     found by bentley@ in sbcl(1)  Mon, 9 Dec 2013 18:36:57 -0700
   
   - .ns (no-space mode) occurs in xine-config(1)
     reported by brad@  Sat, 15 Jan 2011 15:45:23 -0500
   
   - .ta (tab settings) occurs in ircbug(1) and probably gnats(1)
     reported by brad@  Sat, 15 Jan 2011 15:50:51 -0500
     also Tcl_NewStringObj(3) via wiz@  Wed, 5 Mar 2014 22:27:43 +0100
   
   - .ti (temporary indent)
     found by naddy@ in xloadimage(1)
     found by bentley@ in nmh(1)  Mon, 23 Apr 2012 13:38:28 -0600
   
   - .while and .shift
     found by jca@ in ratpoison(1)  Sun, 30 Jun 2013 12:01:09 +0200
   
   - \c (interrupted text) should prevent the line break
     even inside .Bd literal; that occurs in chat(8)
     also found in cclive(1) - DocBook output
   
   - \h horizontal move
     found in cclive(1) DocBook output
     Anthony J. Bentley on discuss@  Sat, 21 Sep 2013 22:29:34 -0600
   
   - \n+ and \n- numerical register increment and decrement
     found by bentley@ in sbcl(1)  Mon, 9 Dec 2013 18:36:57 -0700
   
   - \w'' width measurements
     would not be very useful without an expression parser, see below
     needed for Tcl_NewStringObj(3) via wiz@  Wed, 5 Mar 2014 22:27:43 +0100
   
   - using undefined strings or macros defines them to be empty
     wl@  Mon, 14 Nov 2011 14:37:01 +0000
   
   - general expression parser, including arithmetics
     to be used at least for .if/.ie and .nr and maybe at other places
     could use J.T.Conklin's PD code in bin/expr/expr.c for inspiration
     needed for Tcl_NewStringObj(3) via wiz@  Wed, 5 Mar 2014 22:27:43 +0100
   
   --- missing mdoc features ----------------------------------------------
   
 - fix bad block nesting involving multiple identical explicit blocks  - fix bad block nesting involving multiple identical explicit blocks
   see the OpenBSD mdoc_macro.c 1.47 commit message    see the OpenBSD mdoc_macro.c 1.47 commit message
   
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   .Sh .Nm .Bk .Nm .Ek .Sh found by jmc@ in ssh-keygen(1)    .Sh .Nm .Bk .Nm .Ek .Sh found by jmc@ in ssh-keygen(1)
   from jmc@  Wed, 14 Jul 2010 18:10:32 +0100    from jmc@  Wed, 14 Jul 2010 18:10:32 +0100
   
 - auto-Bk in the SYNOPSIS  - \\ is now implemented correctly
   patch from kristaps@  Fri, 16 Jul 2010 14:51:24 +0200    * when defining strings and macros using .ds and .de
   to be revisited after OpenBSD 4.8 tree unlock    * 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.  
   
 - 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  
   
 - 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  
   
 - port OpenBSD tbl integration bsd.lv, probably cleaning it up  
   
 - 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  
   roff stuff.  Figure out to what extent we can cope.  
   noted by stsp@  Sat, 24 Apr 2010 09:17:55 +0200  
   reminded by nicm@  Mon, 3 May 2010 09:52:41 +0100  
   
 - implement blank `Bl -column', such as  - implement blank `Bl -column', such as
   .Bl -column    .Bl -column
   .It foo Ta bar    .It foo Ta bar
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 - explicitly disallow nested `Bl -column', which would clobber internal  - explicitly disallow nested `Bl -column', which would clobber internal
   flags defined for struct mdoc_macro    flags defined for struct mdoc_macro
   
   - In .Bl -column .It, the end of the line probably has to be regarded
     as an implicit .Ta, if there could be one, see the following mildly
     ugly code from login.conf(5):
       .Bl -column minpasswordlen program xetcxmotd
       .It path Ta path Ta value of Dv _PATH_DEFPATH
       .br
       Default search path.
     reported by Michal Mazurek <akfaew at jasminek dot net>
     via jmc@ Thu, 7 Apr 2011 16:00:53 +0059
   
 - inside `.Bl -column' phrases, punctuation is handled like normal  - inside `.Bl -column' phrases, punctuation is handled like normal
   text, e.g. `.Bl -column .It Fl x . Ta ...' should give "-x -."    text, e.g. `.Bl -column .It Fl x . Ta ...' should give "-x -."
   
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   (e.g., NetBSD mDNSShared/dns-sd.1)    (e.g., NetBSD mDNSShared/dns-sd.1)
   (mdoc_html.c and mdoc_term.c `Nm' handlers can be slightly simplified)    (mdoc_html.c and mdoc_term.c `Nm' handlers can be slightly simplified)
   
 - xloadimage(1) wants .ti (temporary indent), rep by naddy@  - When there is free text in the SYNOPSIS and that free text contains
     the .Nm macro, groff somehow understands to treat the .Nm as an in-line
     macro, while mandoc treats it as a block macro and breaks the line.
     No idea how the logic for distinguishing in-line and block instances
     should be, needs investigation.
     uqs@  Thu, 2 Jun 2011 11:03:51 +0200
     uqs@  Thu, 2 Jun 2011 11:33:35 +0200
   
 - bashbug(1) complains "line scope broken" after  --- missing man features -----------------------------------------------
   .SM  
   .B something  
   should either just work or be a warning  
   reported by naddy@  
   
   - -T[x]html doesn't stipulate non-collapsing spaces in literal mode
   
   --- missing tbl features -----------------------------------------------
   
   - look at the POSIX manuals in the books/man-pages-posix port,
     they use some unsupported tbl(7) 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
   
   - allow standalone `.' to be interpreted as an end-of-layout
     delimiter instead of being thrown away as a no-op roff line
     reported by Yuri Pankov, Wed 18 May 2011 11:34:59 CEST
   
   --- missing misc features ----------------------------------------------
   
   - italic correction (\/) in PostScript mode
     Werner LEMBERG on groff at gnu dot org  Sun, 10 Nov 2013 12:47:46
   
   - The whatis(1) utility looks for whole words in Nm.
     If the file name of a page does not agree with the contents of any
     of its Nm macros (e.g. pool(9)), add the file name as an Nm entry
     to the mandoc.db as well, such that whatis(1) finds it.
     If there is a page with a file name that does not appear as a substring
     neither in Nm nor in Nd, the same fix would allow finding that page
     with apropos(1) using the file name as a key, as well.
     Issue reported by tedu@  Fri, 05 Jul 2013 21:15:23 -0400
   
   - makewhatis(8) for preformatted pages:
     parse the section number from the header line
     and compare to the section number from the directory name
   
   - Does makewhatis(8) detect missing NAME sections, missing names,
     and missing descriptions in all the file formats?
   
   - 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
   
   - 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
     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
     reminded by nicm@  Mon, 3 May 2010 09:52:41 +0100
   
   - look at pages generated from Texinfo source by yat2m, e.g. security/gnupg
     First impression is not that bad.
   
 - check compatibility with Plan9:  - check compatibility with Plan9:
   http://swtch.com/usr/local/plan9/tmac/tmac.an    http://swtch.com/usr/local/plan9/tmac/tmac.an
   http://swtch.com/plan9port/man/man7/man.html    http://swtch.com/plan9port/man/man7/man.html
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 * formatting issues: ugly output  * formatting issues: ugly output
 ************************************************************************  ************************************************************************
   
 - double quotes inside double quotes are escaped by doubling them  - a column list with blank `Ta' cells triggers a spurrious
   implement this in man(7) and mdoc(7)    start-with-whitespace printing of a newline
   reminded by millert@  Thu, 09 Dec 2010 17:29:52 -0500  
   
 - perl(1) SYNOPSIS looks bad; reported by deraadt@  
   1) man(7) seems to need SYNOPSIS .Nm blocks, too  
   
 - In .Bl -column,  - In .Bl -column,
   .It Em Authentication<tab>Key Length    .It Em Authentication<tab>Key Length
   ought to render "Key Length" with emphasis, too,    ought to render "Key Length" with emphasis, too,
   see OpenBSD iked.conf(5).    see OpenBSD iked.conf(5).
     reported again Nicolas Joly via wiz@ Wed, 12 Oct 2011 00:20:00 +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".
   
   - Trailing punctuation after .%T triggers EOS spacing, at least
     outside .Rs (eek!).  Simply setting ARGSFL_DELIM for .%T is not
     the right solution, it sends mandoc into an endless loop.
     reported by Nicolas Joly  Sat, 17 Nov 2012 11:49:54 +0100
   
 - in enclosures, mandoc sometimes fancies a bogus end of sentence  - in enclosures, mandoc sometimes fancies a bogus end of sentence
   reminded by jmc@  Thu, 23 Sep 2010 18:13:39 +0059    reminded by jmc@  Thu, 23 Sep 2010 18:13:39 +0059
   
   - formatting /usr/local/man/man1/latex2man.1 with groff and mandoc
     reveals lots of bugs both in groff and mandoc...
     reported by bentley@  Wed, 22 May 2013 23:49:30 -0600
   
   --- PDF issues ---------------------------------------------------------
   
   - PDF output doesn't use a monospaced font for .Bd -literal
     Example: "mandoc -Tpdf afterboot.8 > output.pdf && pdfviewer output.pdf".
     Search the text "Routing tables".
     Also check what PostScript mode does when fixing this.
     reported by juanfra@ Wed, 04 Jun 2014 21:44:58 +0200
   
 ************************************************************************  ************************************************************************
 * formatting issues: gratuitious differences  * formatting issues: gratuitous differences
 ************************************************************************  ************************************************************************
   
 - .Rv (and probably .Ex) print different text if an `Nm' has been named  - .Rv (and probably .Ex) print different text if an `Nm' has been named
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   is just "o\bo".    is just "o\bo".
   see for example OpenBSD ksh(1)    see for example OpenBSD ksh(1)
   
 - The characters "|" and "\*(Ba" should never be bold,  - .Pp between two .It in .Bl -column should produce one,
   not even in the middle of a word, e.g. ".Cm b\*(Bac" in    not two blank lines, see e.g. login.conf(5).
   "mknod [-m mode] name b|c major minor"    reported by jmc@  Sun, 17 Apr 2011 14:04:58 +0059
   in OpenBSD ksh(1)    reported again by sthen@  Wed, 18 Jan 2012 02:09:39 +0000 (UTC)
   
 - A bogus .Pp between two .It must not produce a double blank line,  - If the *first* line after .It is .Pp, break the line right after
   see between -R and -r in OpenBSD rm(1), before "update" in mount(8),    the tag, do not pad with space characters before breaking.
   or in DIAGNOSTICS in init(8).    See the description of the a, c, and i commands in sed(1).
   Also have `It' complain if `Pp' is invoked at certain times (not  
   -compact?).  
   
 - .Bd -literal and .Bd -unfilled are *not* identical.  - If the first line after .It is .D1, do not assert a blank line
   In -literal, tabs are 8 spaces.    in between, see for example tmux(1).
   In -unfilled, tabs are 5 spaces, just like in -filled and -ragged.    reported by nicm@  13 Jan 2011 00:18:57 +0000
   See the CCDF_* display in OpenBSD ccdconfig(8).  
   
   - Trailing punctuation after .It should trigger EOS spacing.
     reported by Nicolas Joly  Sat, 17 Nov 2012 11:49:54 +0100
     Probably, this should be fixed somewhere in termp_it_pre(), not sure.
   
 - .Nx 1.0a  - .Nx 1.0a
   should be "NetBSD 1.0A", not "NetBSD 1.0a",    should be "NetBSD 1.0A", not "NetBSD 1.0a",
   see OpenBSD ccdconfig(8).    see OpenBSD ccdconfig(8).
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   on the next line, it must be indented by -width, not width+1;    on the next line, it must be indented by -width, not width+1;
   see "rule block|pass" in OpenBSD ifconfig(8).    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 same applies to .Bl -column column widths;
     reported again by Nicolas Joly Thu, 1 Mar 2012 13:41:26 +0100 via wiz@ 5 Mar
     reported again by Franco Fichtner Fri, 27 Sep 2013 21:02:28 +0200
     An easy partial fix would be to just skip the first word if it starts
     with a dot, including any following white space, when measuring.
   
 - The \& zero-width character counts as output.  - The \& zero-width character counts as output.
   That is, when it is alone on a line between two .Pp,    That is, when it is alone on a line between two .Pp,
   we want three blank lines, not two as in mandoc.    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  
   
 - It seems that .TP does not want TWOSPACE after the tag;  
   see bashbug(1); reported by naddy@  
   
 - Header lines of excessive length:  - Header lines of excessive length:
   Port OpenBSD man_term.c rev. 1.25 to mdoc_term.c    Port OpenBSD man_term.c rev. 1.25 to mdoc_term.c
   and document it in mdoc(7) and man(7) COMPATIBILITY    and document it in mdoc(7) and man(7) COMPATIBILITY
   found while talking to Chris Bennett    found while talking to Chris Bennett
   
   - 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).
   
 ************************************************************************  ************************************************************************
   * warning issues
   ************************************************************************
   
   - check that MANDOCERR_BADTAB is thrown in the right cases,
     i.e. when finding a literal tab character in fill mode,
     and possibly change the wording of the warning message
     to refer to fill mode, not literal mode
     See the mail from Werner LEMBERG on the groff list,
     Fri, 14 Feb 2014 18:54:42 +0100 (CET)
   
   ************************************************************************
 * performance issues  * performance issues
 ************************************************************************  ************************************************************************
   
Line 195  Several areas can be cleaned up to make mandoc even fa
Line 330  Several areas can be cleaned up to make mandoc even fa
   
 - the PDF file is HUGE: this can be reduced by using relative offsets  - the PDF file is HUGE: this can be reduced by using relative offsets
   
   - instead of re-initialising the roff predefined-strings set before each
     parse, create a read-only version the first time and copy it
   
 ************************************************************************  ************************************************************************
 * structural issues  * structural issues
 ************************************************************************  ************************************************************************
   
   - We use the input line number at several places to distinguish
     same-line from different-line input.  That plainly doesn't work
     with user-defined macros, leading to random breakage.
   
 - Find better ways to prevent endless loops  - Find better ways to prevent endless loops
   in roff(7) macro and string expansion.    in roff(7) macro and string expansion.
   
   - Finish cleanup of date handling.
     Decide which formats should be recognized where.
     Update both mdoc(7) and man(7) documentation.
     Triggered by  Tim van der Molen  Tue, 22 Feb 2011 20:30:45 +0100
   
   - Consider creating some views that will make the database more
     readable from the sqlite3 shell.  Consider using them to
     abstract from the database structure, too.
     suggested by espie@  Sat, 19 Apr 2014 14:52:57 +0200
   
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