Before trying to fix anything from this list,
check against -current mandoc from OpenBSD CVS.
Sometimes, i'm a bit behind marking entries FIXED.

In general, i keep FIXED entries for some time
and remove them when they turn into old news.

************************************************************************
* 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

- .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

- .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

- man(7) .TH should recognize "3p" as a section number
  found in usr.bin/pkg_add OpenBSD::Getopt

- 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.

- look at bsd.lv tbl(1)
  from kristaps@  Fri, 11 Sep 2009 17:10:53 +0200

- 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


- 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

- 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

- FIXED bsd.lv libman.h 1.31 libmdoc.h 1.34 man.c 1.60 mdoc.c 1.123
        kristaps@ 8.4.10
  FIXED OpenBSD libman.h 1.17 libmdoc.h 1.28 man.c 1.26 mdoc.c 1.45
        schwarze@ 8.5.10
  groff handles \." just like .\"
  Thus, mandoc must also ignore such lines.
  For an example, see tr(1).
  reported by Claus Assmann Mon, 5 Apr 2010 08:46:30 -0700


************************************************************************
* 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

- in .Bl -column .It, "\t" seems to be synonymous to " Ta ",
  see sysctl(3) for many examples;
  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:
  .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

- 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


- FIXED on bsd.lv for mdoc, need to merge and test in OpenBSD
    kristaps@  Mon, 10 May 2010 03:12:44 +0200
    man fix still pending!
  in literal displays, ignore the right margin
  reminded by stsp in net/pptp pptp.8  Fri, 23 Apr 2010 20:32:39 +0200

- FIXED on bsd.lv, need to merge and test in OpenBSD
    kristaps@  Mon, 10 May 2010 02:59:40 +0200
  do not mark \*(Ba and | up
  e.g. .Op Fl c Ar string \*(Ba Fl s \*(Ba Ar file Op Ar argument ...
  The first should not be in an .Ar font.
  The second must not end up as -|.
  When fixing, check whether this is a specific problem with this
  character, or whether other characters are affected, too.
  reminded by jmc@  Sat, 24 Apr 2010 06:54:26 +0100


************************************************************************
* formatting issues: gratuitious differences
************************************************************************

- in literal context, groff disables the right margin
  an example: syslog.conf.5 EXAMPLES section
  reported by jmc Tue, 13 Apr 2010 10:12:15 +0100
  solution: raise termp->maxrmargin in literal context

- 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


- FIXED bsd.lv mdoc_html.c 1.61 mdoc_term.c 1.117 kristaps@ 8.4.10
  FIXED OpenBSD mdoc_html.c 1.12 mdoc_term.c 1.76 schwarze@ 8.5.10
  mandoc .%T changed from quoted to underlined
  reported by jmc Mon, 10 Aug 2009 05:50:21 +0100


************************************************************************
* parser errors without any effect on formatting
************************************************************************

- OpenBSD::PackageName(3p) has "if (block) 90:1" in the parse tree