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Diff for /mandoc/TODO between version 1.193 and 1.300

version 1.193, 2014/12/03 01:46:54 version 1.300, 2020/01/19 16:27:43
Line 33  Obviously, as the issues have not been solved yet, the
Line 33  Obviously, as the issues have not been solved yet, the
 are mere guesses, and some may be wrong.  are mere guesses, and some may be wrong.
   
 ************************************************************************  ************************************************************************
 * crashes  
 ************************************************************************  
   
 - The abort() in bufcat(), html.c, can be triggered via buffmt_includes()  
   by running -Thtml -Oincludes on a file containing a long .In argument.  
   Fixing this will probably require reworking the whole bufcat() concept.  
   loc **  exist *  algo *  size **  imp **  
   
 ************************************************************************  
 * missing features  * missing features
 ************************************************************************  ************************************************************************
   
Line 60  are mere guesses, and some may be wrong.
Line 51  are mere guesses, and some may be wrong.
 - .fc (field control)  - .fc (field control)
   found by naddy@ in xloadimage(1)    found by naddy@ in xloadimage(1)
   loc **  exist ***  algo *  size *  imp *    loc **  exist ***  algo *  size *  imp *
   
 - .nr third argument (auto-increment step size, requires \n+)  
   found by bentley@ in sbcl(1)  Mon, 9 Dec 2013 18:36:57 -0700  
   loc *  exist *  algo *  size *  imp **  
   
 - .ns (no-space mode) occurs in xine-config(1)  - .ns (no-space mode) occurs in xine-config(1)
     when implementing this, also let .TH set it
   reported by brad@  Sat, 15 Jan 2011 15:45:23 -0500    reported by brad@  Sat, 15 Jan 2011 15:45:23 -0500
   loc ***  exist ***  algo ***  size **  imp *    loc ***  exist ***  algo ***  size **  imp *
   
 - .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  
   also posix2time(3) Carsten Kunze  Mon, 1 Dec 2014 13:03:10 +0100  
   loc **  exist ***  algo **  size **  imp ***  
   
 - .ti (temporary indent)  
   found by naddy@ in xloadimage(1)  
   found by bentley@ in nmh(1)  Mon, 23 Apr 2012 13:38:28 -0600  
   loc **  exist **  algo **  size *  imp ** (parser reorg helps a lot)  
   
 - .while and .shift  
   found by jca@ in ratpoison(1)  Sun, 30 Jun 2013 12:01:09 +0200  
   loc *  exist **  algo **  size **  imp **  
   
 - \h horizontal move  
   found in cclive(1) DocBook output  
   Anthony J. Bentley on discuss@  Sat, 21 Sep 2013 22:29:34 -0600  
   loc **  exist **  algo **  size *  imp ** (parser reorg helps a lot)  
   
 - \n+ and \n- numerical register increment and decrement  
   found by bentley@ in sbcl(1)  Mon, 9 Dec 2013 18:36:57 -0700  
   loc *  exist *  algo *  size *  imp **  
   
 - \w'' improve width measurements  - \w'' improve width measurements
   would not be very useful without an expression parser, see below    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    needed for Tcl_NewStringObj(3) via wiz@  Wed, 5 Mar 2014 22:27:43 +0100
   loc **  exist ***  algo ***  size *  imp ***    loc **  exist ***  algo ***  size *  imp ***
   
 - using undefined strings or macros defines them to be empty  - .als only works for macros in mandoc, not for user-defined strings.
   wl@  Mon, 14 Nov 2011 14:37:01 +0000    Also, the "val" field in struct roffkv would have to be replaced
   loc *  exist *  algo *  size *  imp *    with a pointer to a reference-counted wrapper, and an alias
     would have to point to the same wrapper as the original.
     .als to undefined does nothing; the alias is not created.
     .rm'ing the original leaves the alias to point to the old value.
     .de .als .de changes both, but
     .de .als .rm .de only changes the new value, not the alias.
     Found in groffer(1) version 1.19
     Jan Stary 20 Apr 2019 20:16:54 +0200
     loc *  exist **  algo **  size **  imp *
   
   - roff string condition comparisons fail when vars contain quotes:
     .ds s '
     .if '\*s'' \&...
     hard to fix because of the basic architecture (string replacement
     happens before roff(7) syntax parsing)
     Found in groffer(1) version 1.19
     Jan Stary 20 Apr 2019 20:16:54 +0200
     loc *  exist ***  algo ***  size **  imp *
   
 --- missing mdoc features ----------------------------------------------  --- missing mdoc features ----------------------------------------------
   
 - fix bad block nesting involving multiple identical explicit blocks  - .Sh and .Ss should be parsed and partially callable, see groff_mdoc(7)
   see the OpenBSD mdoc_macro.c 1.47 commit message    reed at reedmedia dot net Sat, 21 Dec 2019 17:13:07 -0600
   loc *  exist ***  algo ***  size *  imp **    loc **  exist **  algo **  size **  imp *
   
 - .Bl -column .Xo support is missing  - .Bl -column .Xo support is missing
   ultimate goal:    ultimate goal:
Line 121  are mere guesses, and some may be wrong.
Line 102  are mere guesses, and some may be wrong.
   from jmc@  Wed, 14 Jul 2010 18:10:32 +0100    from jmc@  Wed, 14 Jul 2010 18:10:32 +0100
   loc *  exist ***  algo ***  size **  imp **    loc *  exist ***  algo ***  size **  imp **
   
 - .Bd -centered implies -filled, not -unfilled, which is not  
   easy to implement; it requires code similar to .ce, which  
   we don't have either.  
   Besides, groff has bug causing text right *before* .Bd -centered  
   to be centered as well.  
   loc ***  exist ***  algo **  size **  imp **  (parser reorg would help)  
   
 - .Bd -filled should not be the same as .Bd -ragged, but align both  - .Bd -filled should not be the same as .Bd -ragged, but align both
   the left and right margin.  In groff, it is implemented in terms    the left and right margin.  In groff, it is implemented in terms
   of .ad b, which we don't have either.  Found in cksum(1).    of .ad b, which we don't have either.  Found in cksum(1).
Line 161  are mere guesses, and some may be wrong.
Line 135  are mere guesses, and some may be wrong.
   is not safe, e.g. `.Bl -column .It Pf a b .' gives "ab."    is not safe, e.g. `.Bl -column .It Pf a b .' gives "ab."
   but should give "ab ."    but should give "ab ."
   
 - check whether it is correct that `D1' uses INDENT+1;  
   does it need its own constant?  
   loc *  exist **  algo **  size *  imp **  
   
 - prohibit `Nm' from having non-text HEAD children  - prohibit `Nm' from having non-text HEAD children
   (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)
Line 187  are mere guesses, and some may be wrong.
Line 157  are mere guesses, and some may be wrong.
   
 --- missing man features -----------------------------------------------  --- missing man features -----------------------------------------------
   
 - -T[x]html doesn't stipulate non-collapsing spaces in literal mode  - groff_www(7) .MTO and .URL
     These macros were used by the GNU grep(1) man page.
     The groff_www(7) manual page itself uses them, too.
     We should probably *not* add them to mandoc.
     Just mentioning this here to keep track of the abuse.
     Laura Morales <lauretas at mail dot com> 20 Apr 2018 07:33:02 +0200
     loc **  exist *  algo *  size **  imp *
   
 --- missing tbl features -----------------------------------------------  --- missing tbl features -----------------------------------------------
   
   - vertical centering in cells vertically spanned with ^
     pali dot rohar at gmail dot com 16 Jul 2018 13:03:35 +0200
     loc *  exist ***  algo ***  size **  imp *
   
   - support mdoc(7) and man(7) macros inside tbl(7) code;
     probably requires the parser reorg and letting tbl(7)
     use roff_node such that macro sets can mix;
     informed by bapt@ that FreeBSD needs this: 3 Jan 2015 23:32:23 +0100
     loc ***  exist **  algo ***  size **  imp ***
   
 - look at the POSIX manuals in the books/man-pages-posix port,  - look at the POSIX manuals in the books/man-pages-posix port,
   they use some unsupported tbl(7) features.    they use some unsupported tbl(7) features, mostly macros in tbl(7).
   loc *  exist **  algo **  size **  imp ***    loc *  exist **  algo **  size **  imp ***
   
 - use Unicode U+2500 to U+256C for table borders  - look what Joerg Schilling manual pages use
   in tbl(7) -Tutf-8 output    Thu, 19 Mar 2015 18:31:48 +0100
   suggested by bentley@  Tue, 14 Oct 2014 04:10:55 -0600  
   loc *  exist **  algo *  size *  imp **  
   
 - 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  
   loc **  exist **  algo **  size *  imp **  
   
 --- missing eqn features -----------------------------------------------  --- missing eqn features -----------------------------------------------
   
   - In a matrix, break the output line after each matrix line.
     Found in the discussion at CDBUG 2015.  Suggested by Avi Weinstock.
     This may not be the ideal solution after all: eqn(7) matrices
     are lists of columns, so Avi's proposal would show each *column*
     on its own *line*, which is likely to cause confusion.
     A better solution, but much harder to implement, would be to
     actually show the coordinates of column vectors on different
     terminal output lines, using the clumnated output facilities
     developed for .Bl -tag, .Bl -column, and also used for tbl(7).
     loc *  exist *  algo **  size **  imp **
   
 - The "size" keyword is parsed, but ignored by the formatter.  - The "size" keyword is parsed, but ignored by the formatter.
   loc *  exist *  algo *  size *  imp *    loc *  exist *  algo *  size *  imp *
   
Line 218  are mere guesses, and some may be wrong.
Line 208  are mere guesses, and some may be wrong.
   see User's Guide (Second Edition) page 5 section 15.    see User's Guide (Second Edition) page 5 section 15.
   loc **  exist **  algo **  size **  imp **    loc **  exist **  algo **  size **  imp **
   
   - GNU eqn converts some operators to special characters, for example,
     input HYPHEN-MINUS becomes output \(mi, unless it is part of a
     quoted word.  mandoc(1) only does this when the operator is
     surrounded by blanks, not when it is part of an unquoted word.
     Also, check whether there are more such cases (e.g., +?).
     reported by bentley@  20 Jun 2017 02:04:29 -0600
     loc *  exist **  algo **  size *  imp *
   
   - Primes, opprime, and '
     bentley@  Thu, 13 Jul 2017 23:14:20 -0600
   
 --- missing misc features ----------------------------------------------  --- missing misc features ----------------------------------------------
   
   - man -ks 1,8 route; kn@ Jul 13, 2018 orally
   
 - italic correction (\/) in PostScript mode  - italic correction (\/) in PostScript mode
   Werner LEMBERG on groff at gnu dot org  Sun, 10 Nov 2013 12:47:46    Werner LEMBERG on groff at gnu dot org  Sun, 10 Nov 2013 12:47:46
   loc **  exist **  algo *  size *  imp *    loc **  exist **  algo *  size *  imp *
   
 - When makewhatis(8) encounters a FATAL parse error,  - change the default PAGER to more -Es and use the pager
   it silently treats the file as formatted, which makes no sense    even for apropos title line output; req by bapt@
   at all for paths like man1/foo.1 - and which also contradicts  
   what the manual says at the end of the description.  
   The end result will be ENOENT for file names returned  
   by mansearch() in manpage.file.  
   loc *  exist *  algo *  size *  imp **  
   
 - makewhatis(8) for preformatted pages:  
   parse the section number from the header line  
   and compare to the section number from the directory name  
   loc *  exist *  algo *  size *  imp **  
   
 - Does makewhatis(8) detect missing NAME sections, missing names,  
   and missing descriptions in all the file formats?  
   loc *  exist *  algo *  size *  imp ***    loc *  exist *  algo *  size *  imp ***
   
 - clean up escape sequence handling, creating three classes:  - clean up escape sequence handling, creating three classes:
Line 263  are mere guesses, and some may be wrong.
Line 253  are mere guesses, and some may be wrong.
 - look at AT&T DWB http://www2.research.att.com/sw/download  - look at AT&T DWB http://www2.research.att.com/sw/download
   Carsten Kunze <carsten dot kunze at arcor dot de> has patches    Carsten Kunze <carsten dot kunze at arcor dot de> has patches
   Mon, 4 Aug 2014 17:01:28 +0200    Mon, 4 Aug 2014 17:01:28 +0200
     ported version: https://github.com/n-t-roff/DWB3.3
     Carsten Kunze  Wed, 22 Apr 2015 11:21:43 +0200
   
 - 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
Line 286  are mere guesses, and some may be wrong.
Line 278  are mere guesses, and some may be wrong.
   http://swtch.com/plan9port/man/man7/man.html    http://swtch.com/plan9port/man/man7/man.html
   "Anthony J. Bentley" <anthonyjbentley@gmail.com> 28 Dec 2010 21:58:40 -0700    "Anthony J. Bentley" <anthonyjbentley@gmail.com> 28 Dec 2010 21:58:40 -0700
   
   - check compatibility with COHERENT troff:
     http://www.nesssoftware.com/home/mwc/source.php
   
 - check compatibility with the man(7) formatter  - check compatibility with the man(7) formatter
   https://raw.githubusercontent.com/rofl0r/hardcore-utils/master/man.c    https://raw.githubusercontent.com/rofl0r/hardcore-utils/master/man.c
   
Line 294  are mere guesses, and some may be wrong.
Line 289  are mere guesses, and some may be wrong.
   https://github.com/schmonz/ikiwiki/compare/mandoc    https://github.com/schmonz/ikiwiki/compare/mandoc
   Amitai Schlair  Mon, 19 May 2014 14:05:53 -0400    Amitai Schlair  Mon, 19 May 2014 14:05:53 -0400
   
   - check compatibility with
     https://git.sr.ht/~sircmpwn/scdoc
   
   - check features of the Slackware man.conf(5) format
     Carsten Kunze  Wed, 11 Mar 2015 17:57:24 +0100
   
 ************************************************************************  ************************************************************************
 * formatting issues: ugly output  * formatting issues: ugly output
 ************************************************************************  ************************************************************************
   
 - a column list with blank `Ta' cells triggers a spurrious  - revisit empty in-line macros
     look at the difference between "Em x Em ." and "Sq x Em ."
     Carsten Kunze  Fri, 12 Dec 2014 00:15:41 +0100
     loc *** exist *** algo *** size * imp **
   
   - a column list with blank `Ta' cells triggers a spurious
   start-with-whitespace printing of a newline    start-with-whitespace printing of a newline
   
   - In .Bl -column, .It a<tab>"b<tab>c"
     shows the quotes in groff, but not in mandoc
     loc * exist *** algo ** size * imp **
   
 - 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,
Line 333  are mere guesses, and some may be wrong.
Line 343  are mere guesses, and some may be wrong.
   .Vt vs .Vt/.Va vs .Ft/.Va vs .Ft/.Fa ...    .Vt vs .Vt/.Va vs .Ft/.Va vs .Ft/.Fa ...
   from kristaps@  Tue, 08 Jun 2010 11:13:32 +0200    from kristaps@  Tue, 08 Jun 2010 11:13:32 +0200
   
   - implicit whitespace around inline equations
     example code:  where '$times$' denotes matrix multiplication
     must not have an HTML line break, nor a blank, before <math>
     partial solution: html.c {"math", HTML_NLINSIDE | HTML_INDENT},
     bentley@  Thu, 13 Jul 2017 19:00:59 -0600
   
 - 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
   loc *  exist **  algo ***  size *  imp ***    loc *  exist **  algo ***  size *  imp ***
   
   - a line starting with "\fB something" counts as starting with whitespace
     and triggers a line break; found in audio/normalize-mp3(1)
     This will become easier once escape sequences are represented
     by syntax tree nodes.
     loc **  exist *  algo **  size *  imp **
   
 - formatting /usr/local/man/man1/latex2man.1 with groff and mandoc  - formatting /usr/local/man/man1/latex2man.1 with groff and mandoc
   reveals lots of bugs both in groff and mandoc...    reveals lots of bugs both in groff and mandoc...
   reported by bentley@  Wed, 22 May 2013 23:49:30 -0600    reported by bentley@  Wed, 22 May 2013 23:49:30 -0600
   
 --- PDF issues ---------------------------------------------------------  --- PostScript and PDF issues ------------------------------------------
   
 - PDF output doesn't use a monospaced font for .Bd -literal  - PDF output doesn't use a monospaced font for .Bd -literal
   Example: "mandoc -Tpdf afterboot.8 > output.pdf && pdfviewer output.pdf".    Example: "mandoc -Tpdf afterboot.8 > output.pdf && pdfviewer output.pdf".
Line 351  are mere guesses, and some may be wrong.
Line 373  are mere guesses, and some may be wrong.
   instructions from juanfra@  Wed, 11 Jun 2014 02:21:01 +0200    instructions from juanfra@  Wed, 11 Jun 2014 02:21:01 +0200
     add a new <</Type /Font>> block to the PDF files with /BaseFont /Courier      add a new <</Type /Font>> block to the PDF files with /BaseFont /Courier
     and change the /Name from /F0 to the new font (/F5 (?)).      and change the /Name from /F0 to the new font (/F5 (?)).
     re-reported by tb@ Mon, 16 Mar 2015 16:47:21 +0100
   loc *  exist **  algo **  size *  imp **    loc *  exist **  algo **  size *  imp **
   
 --- HTML issues --------------------------------------------------------  --- HTML issues --------------------------------------------------------
   
 - <dl><dt><dd> formatting is ugly  - get rid of the last handful of style= attributes such that
   hints are easy to find on the web, e.g.    Content-Security-Policy: can be enabled without unsafe-inline
   http://stackoverflow.com/questions/1713048/    suggested by bentley@  Nov 10, 2019 at 06:02:49AM -0700
   see also matthew@  Fri, 18 Jul 2014 19:25:12 -0700    loc *  exist *  algo *  size *  imp **
   loc *  exist *  algo **  size *  imp ***  
   
   - .Bf at the beginning of a paragraph inserts a bogus 1ex horizontal
     space, see for example random(3).  Introduced in
     http://mdocml.bsd.lv/cgi-bin/cvsweb/mdoc_html.c.diff?r1=1.91&r2=1.92
     reported by deraadt@ Mon, 28 Sep 2015 20:14:13 -0600 (MDT)
     loc **  exist **  algo **  size *  imp *
   
 - jsg on icb, Nov 3, 2014:  - jsg on icb, Nov 3, 2014:
   try to guess Xr in man(7) for hyperlinking    try to guess Xr in man(7) for hyperlinking
     and render them with <a class="Xr" href=...>
     https://github.com/Debian/debiman/issues/15
     loc *  exist *  algo **  size **  imp **
   
   - space characters can end up in href= attributes, for example coming
     from the first .Xr argument (where they make no sense, but still);
     does this affect other characters, other source macros...?
     Jackson Pauls  29 Aug 2017 16:56:27 +0100
   
 - The tables used to render the three-part page headers actually force  - The tables used to render the three-part page headers actually force
   the width of the <body> to the max-width given for <html>.    the width of the <body> to the max-width given for <html>.
   Not yet sure how to fix that...    Not yet sure how to fix that...
Line 371  are mere guesses, and some may be wrong.
Line 407  are mere guesses, and some may be wrong.
   http://undeadly.org/cgi?action=article&sid=20140925064244&pid=1    http://undeadly.org/cgi?action=article&sid=20140925064244&pid=1
   loc *  exist *  algo **  size *  imp ***    loc *  exist *  algo **  size *  imp ***
   
 - consider whether <var> can be used for Ar Dv Er Ev Fa Va.  - generate <img> tags in HTML
   from bentley@  Wed, 13 Aug 2014 09:17:55 -0600    idea from florian@  Tue, 7 Apr 2015 00:26:28 +0000
     may be possible to implement with .Lk img://something.png alt_text
   
 - check https://github.com/trentm/mdocml  - check https://github.com/trentm/mdocml
   
Line 412  are mere guesses, and some may be wrong.
Line 449  are mere guesses, and some may be wrong.
   Probably, this should be fixed somewhere in termp_it_pre(), not sure.    Probably, this should be fixed somewhere in termp_it_pre(), not sure.
   loc *  exist **  algo **  size *  imp **    loc *  exist **  algo **  size *  imp **
   
 - .Nx 1.0a  
   should be "NetBSD 1.0A", not "NetBSD 1.0a",  
   see OpenBSD ccdconfig(8).  
   loc *  exist *  algo *  size *  imp **  
   
 - 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).  
   loc *  exist ***  algo **  size *  imp **  
   
 - When the -width string contains macros, the macros must be rendered  - When the -width string contains macros, the macros must be rendered
   before measuring the width, for example    before measuring the width, for example
     .Bl -tag -width ".Dv message"      .Bl -tag -width ".Dv message"
Line 430  are mere guesses, and some may be wrong.
Line 457  are mere guesses, and some may be wrong.
   The same applies to .Bl -column column widths;    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 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    reported again by Franco Fichtner Fri, 27 Sep 2013 21:02:28 +0200
     reported again by Bruce Evans Fri, 17 Feb 2017 21:22:44 +0100 via bapt@
   loc ***  exist ***  algo ***  size **  imp ***    loc ***  exist ***  algo ***  size **  imp ***
   An easy partial fix would be to just skip the first word if it starts    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.    with a dot, including any following white space, when measuring.
Line 440  are mere guesses, and some may be wrong.
Line 468  are mere guesses, and some may be wrong.
   we want three blank lines, not two as in mandoc.    we want three blank lines, not two as in mandoc.
   loc **  exist **  algo **  size *  imp **    loc **  exist **  algo **  size *  imp **
   
 - Header lines of excessive length:  - Sequences of multiple man(7) paragraphs (.PP, .IP) interspersed
   Port OpenBSD man_term.c rev. 1.25 to mdoc_term.c    with .ps and .nf/.fi produce execessive blank lines, see libJudy
   and document it in mdoc(7) and man(7) COMPATIBILITY    and graphics/dcmtk.  The parser reorg may help with this.
   found while talking to Chris Bennett  
   loc *  exist *  algo *  size *  imp *  
   
 - trailing whitespace must be ignored even when followed by a font escape,  - trailing whitespace must be ignored even when followed by a font escape,
   see for example    see for example
     makes      makes
     \fBdig \fR      \fBdig \fR
     operate in batch mode      operate in batch mode
Line 458  are mere guesses, and some may be wrong.
Line 484  are mere guesses, and some may be wrong.
 * warning issues  * warning issues
 ************************************************************************  ************************************************************************
   
 - check that MANDOCERR_BADTAB is thrown in the right cases,  - warn about duplicate .Sh/.Ss heads
   i.e. when finding a literal tab character in fill mode,    gre(4): Rename duplicate sections 20 Apr 2018 15:27:33 +0200
   and possibly change the wording of the warning message    loc *  exist *  algo *  size *  imp **
   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)  
   loc *  exist **  algo **  size *  imp **  
   
   - style message about macros inside .Bd -literal and .Dl, in particular
     font changing macros like .Cm, .Ar, .Fa (from the mdoclint TODO)
   
   - style message about mismatches between the section number in the
     file name (if it is known) and the section number in .Dt
     (from the mdoclint TODO)
   
   - style message about NULL without .Dv (from the mdoclint TODO)
   
   - style message about error constants without .Er (from the mdoclint TODO)
   
   - warn when .Sh or .Ss contain other macros
     Steffen Nurpmeso, savannah.gnu.org/bugs/index.php?45034
     loc *  exist *  algo *  size *  imp **
   
   - style message about violations of the convention
     .An name Aq Mt localpart@domain in AUTHORS (from the mdoclint TODO)
   
 - warn about attempts to call non-callable macros  - warn about attempts to call non-callable macros
   Steffen Nurpmeso  Tue, 11 Nov 2014 22:55:16 +0100    Steffen Nurpmeso  Tue, 11 Nov 2014 22:55:16 +0100
   Note that formatting is inconsistent in groff.    Note that formatting is inconsistent in groff.
Line 474  are mere guesses, and some may be wrong.
Line 514  are mere guesses, and some may be wrong.
   all over mdoc_macro.c and all subtly different.    all over mdoc_macro.c and all subtly different.
   loc **  exist **  algo **  size **  imp **    loc **  exist **  algo **  size **  imp **
   
 - warn about "new sentence, new line"  - warn about punctuation - e.g. ',' and ';' - at the beginning
   loc **  exist **  algo ***  size *  imp **    of a text line, if it is likely intended to follow the preceding
     output without intervening whitespace, in particular after a
     macro line (from the mdoclint TODO)
   
 - mandoc_special does not really check the escape sequence,  - makewhatis -p complains about language subdirectories:
   but just the overall format    /usr/local/man//ru: Unknown directory part
   loc **  exist **  algo ***  size **  imp **  
   
 - integrate mdoclint into mandoc ("end-of-line whitespace" thread)  
   from jmc@  Mon, 13 Jul 2009 17:12:09 +0100  
   from kristaps@  Mon, 13 Jul 2009 18:34:53 +0200  
   from jmc@  Mon, 13 Jul 2009 17:45:37 +0059  
   from kristaps@  Mon, 13 Jul 2009 19:02:03 +0200  
   (mostly done, check what remains)  
   
 - -Tlint parser errors and warnings to stdout  
   to tech@mdocml, naddy@  Wed, 28 Sep 2011 11:21:46 +0200  
   wait!  kristaps@  Sun, 02 Oct 2011 17:12:52 +0200  
   
 - for system errors, use errno/strerror/warn/err  
   
 ************************************************************************  ************************************************************************
 * documentation issues  * documentation issues
 ************************************************************************  ************************************************************************
   
 - mention hyphenation rules:  
   breaking at letter-letter in text mode (not macro args)  
   proper hyphenation is unimplemented  
   
 - talk about spacing around delimiters  
   to jmc@, kristaps@  Sat, 23 Apr 2011 17:41:27 +0200  
   
 - mark macros as: page structure domain, manual domain, general text domain  - mark macros as: page structure domain, manual domain, general text domain
   is this useful?    is this useful?
   
Line 517  are mere guesses, and some may be wrong.
Line 539  are mere guesses, and some may be wrong.
 * performance issues  * performance issues
 ************************************************************************  ************************************************************************
   
 - Why are we using MAP_SHARED, not MAP_PRIVATE for mmap(2)?  
   How does SQLITE_CONFIG_PAGECACHE actually work?  Document it!  
   from kristaps@  Sat, 09 Aug 2014 13:51:36 +0200  
   
 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  - 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  
   loc *  exist **  algo **  size *  imp **  
   
 ************************************************************************  ************************************************************************
 * structural issues  * structural issues
 ************************************************************************  ************************************************************************
   
 - Use libz directly instead of forking gunzip(1).  - POSIX says in the documentation of sysconf(3) that PATH_MAX
   Suggested by bapt at FreeBSD among others.    is allowed to be so large that it is a bad idea to use it
     for sizing static buffers.  So use dynamic buffers throughout.
     See the file test-PATH_MAX.c for details.
     Found by Aaron M. Ucko in the GNU Hurd via Bdale Garbee,
     https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=829624
   
 - We use the input line number at several places to distinguish  - Is it possible to further simplify ENDBODY_SPACE?
   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  
   
   - make buffers for parsing functions const
     christos@ via wiz@  Fri, 18 Dec 2015 17:10:01 +0100
   
 - struct mparse refactoring  - struct mparse refactoring
   Steffen Nurpmeso  Thu, 04 Sep 2014 12:50:00 +0200    Steffen Nurpmeso  Thu, 04 Sep 2014 12:50:00 +0200
   
 - 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  
   
 ************************************************************************  ************************************************************************
 * CGI issues  * CGI issues
 ************************************************************************  ************************************************************************
   
  - Enable HTTP compression by detecting gzip encoding and filtering   - Enable HTTP compression by detecting gzip encoding and filtering
    output through libz.     output through libz.
  - Sandbox (see OpenSSH).   - Privilege separation (see OpenSSH).
  - Enable caching support via HTTP 304 and If-Modified-Since.   - Enable caching support via HTTP 304 and If-Modified-Since.
  - Allow for cgi.h to be overridden by CGI environment variables.  
    Otherwise, binary distributions will inherit the compile-time  
    behaviour, which is not optimal.  
  - Have Mac OSX systems automatically disable -static compilation of the  
    CGI: -static isn't supported.  
   
 ************************************************************************  ************************************************************************
 * to improve in the groff_mdoc(7) macros  * to improve in the groff_mdoc(7) macros
 ************************************************************************  ************************************************************************
   
   - delete OS release verification from .Dx, .Fx, .Nx, .Ox etc.
     https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629161
     also Branden Robinson 18 Dec 2019 00:59:52 +1100
   
   - Can the distinction between .Vt and .Va be made stricter,
     recommending .Vt extern char * Ns Va optarg ; ?
     What about the block macro properties of .Vt in the SYNOPSIS?
     zeurkous 25 Dec 2019 08:48:36 +0100
   
   - .Cd # arch1, arch2 in section 4 pages:
     find better way to indicate multiple architectures, maybe:
     allow .Dt vgafb 4 "macppc sparc64"
     already shown as "Device Drivers Manual (macppc sparc64)"
     for apropos, make that "vgafb(4) - macppc # sparc64" instead of "- all"
     groff can be made to show multiple arches, too, but it is
     tedious to do the string parsing in roff code...
     jmc@ 23 Apr 2018 07:24:52 +0100 [man for vgafb(4)...]
     loc **  exist **  algo *  size *  imp ***
   
 - use uname(1) to set doc-default-operating-system at install time  - use uname(1) to set doc-default-operating-system at install time
   tobimensch  Mon, 1 Dec 2014 00:25:07 +0100    tobimensch  Mon, 1 Dec 2014 00:25:07 +0100
   
   - apostrophe (39), circumflex (94), grave (96), tilde (126)
     in manuals: \(aq, \(ha, \`, \(ti
     Re: [Groff] ASCII Minus Sign in man Pages.
     bentley@ 26 Apr 2017 10:02:06 -0600
     Do we need to fix existing manuals?
     Do we need to fix the definition of the mdoc(7) language?

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