+************************************************************************
+* Official mandoc TODO.
+* $Id: TODO,v 1.168 2014/03/30 19:47:48 schwarze Exp $
+************************************************************************
+
+************************************************************************
+* crashes
+************************************************************************
+
+None known.
+
************************************************************************
* missing features
************************************************************************
-- explicit blocks with missing end macro should be implicitely closed
- 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
+--- missing roff features ----------------------------------------------
+
+- .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).
+
+- .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
+ see the OpenBSD mdoc_macro.c 1.47 commit message
- .Bl -column .Xo support is missing
ultimate goal:
lib/libc/gen/signal.3
lib/libc/sys/sigaction.2
-- .Bk / .Ek is broken, e.g.
- $ man ssh
- [...]
- 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
+- 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
-- implement \\
- in plain text, identical to \e
- as a macro argument, identical to \ i.e. escaping the next character
- 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.
+--- missing man features -----------------------------------------------
-- look at bsd.lv tbl(1)
- from kristaps@ Fri, 11 Sep 2009 17:10:53 +0200
+- -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 ----------------------------------------------
+
+- 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
+
+- 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.
-- 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
+- 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 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
-
-- implement blank `Bl -column', such as
- .Bl -column
- .It foo Ta bar
- .El
-
************************************************************************
* formatting issues: ugly output
************************************************************************
-- outside list context, text following .Sm off
- seems to follow without a blank (TERM_NOBLANK reset late?) e.g.
- .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
- reminded by stsp in net/pptp pptp.8 Fri, 23 Apr 2010 20:32:39 +0200
-
-- URGENT, this is making many kernel manuals look bad:
- .Ft/.Fn should MAYBE behave in custom section like in SYNOPSIS?
- autoconf.9:
- .Sh DIRECT CONFIGURATION
- .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
+- a column list with blank `Ta' cells triggers a spurrious
+ start-with-whitespace printing of a newline
+
+- 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
-- nroff inserts a space before :, mandoc doesn't:
- .Dl expr "/$a" Li : '.*/\e(.*\e)'
+- .%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: gratuitious differences
+* formatting issues: gratuitous differences
************************************************************************
-- FIXED OpenBSD mdoc.c 1.52 schwarze 16.5.10
- lines containing blank characters, and nothing else,
- in literal context (.Bd -literal):
- groff outputs just blank lines "\n"
- mandoc outputs blanks to the left margin,
- then the number of balnks minus one
- NEEDS MERGING TO bsd.lv
+- .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
+ 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.
+ That is, when it is alone on a line between two .Pp,
+ we want three blank lines, not two as in mandoc.
+
+- 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).
************************************************************************
-* parser errors without any effect on formatting
+* warning issues
************************************************************************
-- OpenBSD::PackageName(3p) has "if (block) 90:1" in the parse tree
+- 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
Several areas can be cleaned up to make mandoc even faster. These are
-- cache `Bd' display types as `Bl' types are cached (this primarily
- improves code-size by removing the a2disp type functions)
-
-- improve caching mechanism to handle other per-element arguments so
- that they need not be recalculated between front- and back-ends (also
- reduces code size and complexity)
-
- 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
git.ckatri.com / mandoc.git / blobdiff