************************************************************************
* Official mandoc TODO.
* $Id$
************************************************************************
************************************************************************
* crashes
************************************************************************
- .Bl -tag followed by a text node preceding the first .It should not
throw a FATAL error, but only a normal ERROR. Putting this into the
HEAD of an implicit .It might be cleanest, inserting an implicit .Pp
or just dumping the orphan stuff directly into the BODY of the .Bl
might be easier to implement, and all options can no doubt be made
to yield correct (i.e. groff bug-compatible) rendering.
Anthony J. Bentley on discuss@ Sun, 22 Sep 2013 16:33:21 -0600
************************************************************************
* missing features
************************************************************************
--- missing roff features ----------------------------------------------
- roff.c should treat \n(.H>23 and \n(.V>19 in the pod2man(1)
preamble as true, see for example AUTHORS in MooseX::Getopt.3p
reported by Andreas Voegele <mail at andreasvoegele dot com>
Tue, 22 Nov 2011 15:34:47 +0100 on ports@
- .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).
- .as (append to string)
found by jca@ in ratpoison(1) Sun, 30 Jun 2013 12:01:09 +0200
- .ce (center N lines)
found by naddy@ in xloadimage(1)
found by Juan Francisco Cantero Hurtado <iam at juanfra dot info>
in lang/racket(1) Thu, 20 Jun 2013 03:19:11 +0200
- .fc (field control)
found by naddy@ in xloadimage(1)
- .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
- .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
- using undefined strings or macros defines them to be empty
wl@ Mon, 14 Nov 2011 14:37:01 +0000
--- 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
ultimate goal:
restore .Xr and .Dv to
lib/libc/compat-43/sigvec.3
lib/libc/gen/signal.3
lib/libc/sys/sigaction.2
- edge case: decide how to deal with blk_full bad nesting, e.g.
.Sh .Nm .Bk .Nm .Ek .Sh found by jmc@ in ssh-keygen(1)
from jmc@ Wed, 14 Jul 2010 18:10:32 +0100
- \\ is now implemented correctly
* 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.
- .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
of .ad b, which we don't have either. Found in cksum(1).
- implement blank `Bl -column', such as
.Bl -column
.It foo Ta bar
.El
- explicitly disallow nested `Bl -column', which would clobber internal
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
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)
- 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
--- missing man features -----------------------------------------------
- groff an-ext.tmac macros (.UR, .UE) occur in xine(5)
reported by brad@ Sat, 15 Jan 2011 15:45:23 -0500
also occur in freeciv-client(6) freeciv-server(6) freeciv-modpack(6)
reported by bentley@ Tue, 30 Oct 2012 01:05:57 -0600
- -T[x]html doesn't stipulate non-collapsing spaces in literal mode
--- 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
- 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 ----------------------------------------------
- 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
- 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
- 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
************************************************************************
* formatting issues: ugly output
************************************************************************
- a column list with blank `Ta' cells triggers a spurrious
start-with-whitespace printing of a newline
- double quotes inside double quotes are escaped by doubling them
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 Em Authentication<tab>Key Length
ought to render "Key Length" with emphasis, too,
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
try e.g. .Bl -column It Ta Ta
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
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
************************************************************************
* formatting issues: gratuitous differences
************************************************************************
- .Rv (and probably .Ex) print different text if an `Nm' has been named
or not (run a manual without `Nm blah' to see this). I'm not sure
that this exists in the wild, but it's still an error.
- In .Bl -bullet, the groff bullet is "+\b+\bo\bo", the mandoc bullet
is just "o\bo".
see for example OpenBSD ksh(1)
- .Pp between two .It in .Bl -column should produce one,
not two blank lines, see e.g. login.conf(5).
reported by jmc@ Sun, 17 Apr 2011 14:04:58 +0059
reported again by sthen@ Wed, 18 Jan 2012 02:09:39 +0000 (UTC)
- 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
- 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
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 same applies to .Bl -column column widths;
reported again by Nicolas Joly Thu, 1 Mar 2012 13:41:26 +0100 via wiz@ 5 Mar
- 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
reported again by Nicolas Joly via wiz@ Sun, 18 Sep 2011 18:24:40 +0200
Also, we don't want to break the line within the argument of:
.Fa "chtype tl"
- 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
- 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).
************************************************************************
* 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
- 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
************************************************************************
- 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
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
