Annotation of mandoc/TODO, Revision 1.110
1.1 kristaps 1: ************************************************************************
1.37 kristaps 2: * Official mandoc TODO.
1.110 ! joerg 3: * $Id: TODO,v 1.109 2011/06/11 15:41:35 schwarze Exp $
1.27 kristaps 4: ************************************************************************
5:
6: ************************************************************************
1.61 schwarze 7: * parser bugs
8: ************************************************************************
9:
1.81 schwarze 10: - .TP before .SH is still FATAL in man(7)
11: reported by brad@ Sat, 15 Jan 2011 15:54:54 -0500
1.110 ! joerg 12:
! 13: - Assertion failure on src/share/man/man1/man1.atari/edahdi.1 rev 1.9
! 14: in the NetBSD.
1.96 schwarze 15:
1.74 schwarze 16: ************************************************************************
17: * formatter bugs
18: ************************************************************************
1.63 schwarze 19:
1.101 schwarze 20: - tbl(7): Horizontal and vertical lines are formatted badly:
21: With the box option, there is too much white space at the end of cells.
22: Horizontal lines from "=" lines are a bit too long.
23: yuri dot pankov at gmail dot com Thu, 14 Apr 2011 05:45:26 +0400
24:
1.61 schwarze 25: ************************************************************************
1.1 kristaps 26: * missing features
27: ************************************************************************
1.70 kristaps 28:
1.79 schwarze 29: --- missing roff features ----------------------------------------------
30:
1.82 schwarze 31: - .ad (adjust margins)
32: .ad l -- adjust left margin only (flush left)
33: .ad r -- adjust right margin only (flush right)
34: .ad c -- center text on line
35: .ad b -- adjust both margins (alias: .ad n)
36: .na -- temporarily disable adjustment without changing the mode
37: .ad -- re-enable adjustment without changing the mode
38: Adjustment mode is ignored while in no-fill mode (.nf).
39:
1.81 schwarze 40: - .it (line traps) occur in mysql(1), yasm_arch(7)
41: generated by DocBook XSL Stylesheets v1.71.1 <http://docbook.sf.net/>
42: reported by brad@ Sat, 15 Jan 2011 15:48:18 -0500
43:
1.80 schwarze 44: - .ns (no-space mode) occurs in xine-config(1)
45: reported by brad@ Sat, 15 Jan 2011 15:45:23 -0500
1.61 schwarze 46:
1.80 schwarze 47: - xloadimage(1) wants .ti (temporary indent), rep by naddy@
1.81 schwarze 48:
49: - .ta (tab settings) occurs in ircbug(1) and probably gnats(1)
50: reported by brad@ Sat, 15 Jan 2011 15:50:51 -0500
1.75 schwarze 51:
1.80 schwarze 52: - pod2man expects `tr' to be implemented for \*(-- to work
1.79 schwarze 53:
1.83 schwarze 54: - \c (interrupted text) occurs in chat(8)
1.98 schwarze 55:
1.79 schwarze 56: --- missing mdoc features ----------------------------------------------
57:
1.18 schwarze 58: - fix bad block nesting involving multiple identical explicit blocks
59: see the OpenBSD mdoc_macro.c 1.47 commit message
60:
1.1 kristaps 61: - .Bl -column .Xo support is missing
62: ultimate goal:
63: restore .Xr and .Dv to
64: lib/libc/compat-43/sigvec.3
65: lib/libc/gen/signal.3
66: lib/libc/sys/sigaction.2
67:
1.28 schwarze 68: - edge case: decide how to deal with blk_full bad nesting, e.g.
69: .Sh .Nm .Bk .Nm .Ek .Sh found by jmc@ in ssh-keygen(1)
70: from jmc@ Wed, 14 Jul 2010 18:10:32 +0100
71:
1.74 schwarze 72: - \\ is now implemented correctly
73: * when defining strings and macros using .ds and .de
74: * when parsing roff(7) and man(7) macro arguments
75: It does not yet work in mdoc(7) macro arguments
76: because libmdoc does not yet use mandoc_getarg().
77: Also check what happens in plain text, it must be identical to \e.
1.82 schwarze 78:
79: - .Bd -filled should not be the same as .Bd -ragged, but align both
80: the left and right margin. In groff, it is implemented in terms
81: of .ad b, which we don't have either. Found in cksum(1).
1.22 schwarze 82:
1.10 kristaps 83: - implement blank `Bl -column', such as
84: .Bl -column
85: .It foo Ta bar
86: .El
1.11 kristaps 87:
88: - explicitly disallow nested `Bl -column', which would clobber internal
89: flags defined for struct mdoc_macro
1.102 schwarze 90:
91: - In .Bl -column .It, the end of the line probably has to be regarded
92: as an implicit .Ta, if there could be one, see the following mildly
93: ugly code from login.conf(5):
94: .Bl -column minpasswordlen program xetcxmotd
95: .It path Ta path Ta value of Dv _PATH_DEFPATH
96: .br
97: Default search path.
98: reported by Michal Mazurek <akfaew at jasminek dot net>
99: via jmc@ Thu, 7 Apr 2011 16:00:53 +0059
1.42 schwarze 100:
101: - inside `.Bl -column' phrases, punctuation is handled like normal
102: text, e.g. `.Bl -column .It Fl x . Ta ...' should give "-x -."
103:
104: - inside `.Bl -column' phrases, TERMP_IGNDELIM handling by `Pf'
105: is not safe, e.g. `.Bl -column .It Pf a b .' gives "ab."
106: but should give "ab ."
1.12 kristaps 107:
108: - set a meaningful default if no `Bl' list type is assigned
1.13 kristaps 109:
110: - have a blank `It' head for `Bl -tag' not puke
1.20 kristaps 111:
112: - prohibit `Nm' from having non-text HEAD children
113: (e.g., NetBSD mDNSShared/dns-sd.1)
114: (mdoc_html.c and mdoc_term.c `Nm' handlers can be slightly simplified)
1.109 schwarze 115:
116: - When there is free text in the SYNOPSIS and that free text contains
117: the .Nm macro, groff somehow understands to treat the .Nm as an in-line
118: macro, while mandoc treats it as a block macro and breaks the line.
119: No idea how the logic for distinguishing in-line and block instances
120: should be, needs investigation.
121: uqs@ Thu, 2 Jun 2011 11:03:51 +0200
122: uqs@ Thu, 2 Jun 2011 11:33:35 +0200
1.57 kristaps 123:
1.79 schwarze 124: --- missing man features -----------------------------------------------
1.101 schwarze 125:
126: - .RS/.RE can be nested, see e.g. the x11/fluxbox manuals
127: noticed by dcoppa@ Wed, Apr 13, 2011 at 04:58:14PM +0200:
1.107 schwarze 128: also affects p5-Net-SFTP-Foreign-1.65
129: as reported by gsoares@ Wed, 18 May 2011 09:59:06 -0300
1.79 schwarze 130:
1.80 schwarze 131: - groff an-ext.tmac macros (.UR, .UE) occur in xine(5)
132: reported by brad@ Sat, 15 Jan 2011 15:45:23 -0500
133:
1.79 schwarze 134: --- missing tbl features -----------------------------------------------
135:
136: - implement basic non-parametric .de to support e.g. sox(1)
137: reported by naddy@ Sat, 16 Oct 2010 23:51:57 +0200
138: *** sox(1) still doesn't work, tbl(1) errors need investigation
1.105 kristaps 139:
140: - allow standalone `.' to be interpreted as an end-of-layout
141: delimiter instead of being thrown away as a no-op roff line
142: reported by Yuri Pankov, Wed 18 May 2011 11:34:59 CEST
1.79 schwarze 143:
144: --- missing misc features ----------------------------------------------
145:
146: - clean up escape sequence handling, creating three classes:
147: (1) fully implemented, or parsed and ignored without loss of content
148: (2) unimplemented, potentially causing loss of content
149: or serious mangling of formatting (e.g. \n) -> ERROR
150: see textproc/mgdiff(1) for nice examples
151: (3) undefined, just output the character -> perhaps WARNING
152:
1.83 schwarze 153: - The \t escape sequence is the same as a literal tab, see for example
154: the ASCII table in hexdump(1) where
155: .Bl -column \&000_nu \&001_so \&002_st \&003_et \&004_eo
156: .It \&000\ nul\t001\ soh\t002\ stx\t003\ etx\t004\ eot\t005\ enq
157: produces
158: 000 nul 001 soh 002 stx 003 etx 004 eot 005 enq
159: and the example in oldrdist(1)
160:
1.79 schwarze 161: - look at pages generated from reStructeredText, e.g. devel/mercurial hg(1)
162: These are a weird mixture of man(7) and custom autogenerated low-level
163: roff stuff. Figure out to what extent we can cope.
1.80 schwarze 164: For details, see http://docutils.sourceforge.net/rst.html
1.79 schwarze 165: noted by stsp@ Sat, 24 Apr 2010 09:17:55 +0200
166: reminded by nicm@ Mon, 3 May 2010 09:52:41 +0100
1.71 schwarze 167:
168: - check compatibility with Plan9:
169: http://swtch.com/usr/local/plan9/tmac/tmac.an
170: http://swtch.com/plan9port/man/man7/man.html
171: "Anthony J. Bentley" <anthonyjbentley@gmail.com> 28 Dec 2010 21:58:40 -0700
1.63 schwarze 172:
1.1 kristaps 173: ************************************************************************
174: * formatting issues: ugly output
175: ************************************************************************
1.87 kristaps 176:
177: - a column list with blank `Ta' cells triggers a spurrious
178: start-with-whitespace printing of a newline
1.33 schwarze 179:
1.67 schwarze 180: - double quotes inside double quotes are escaped by doubling them
1.74 schwarze 181: implement this in mdoc(7), too
182: so far, we only have it in roff(7) and man(7)
1.67 schwarze 183: reminded by millert@ Thu, 09 Dec 2010 17:29:52 -0500
184:
1.28 schwarze 185: - perl(1) SYNOPSIS looks bad; reported by deraadt@
1.29 kristaps 186: 1) man(7) seems to need SYNOPSIS .Nm blocks, too
1.1 kristaps 187:
1.39 schwarze 188: - In .Bl -column,
189: .It Em Authentication<tab>Key Length
190: ought to render "Key Length" with emphasis, too,
191: see OpenBSD iked.conf(5).
192:
1.1 kristaps 193: - empty phrases in .Bl column produce too few blanks
194: try e.g. .Bl -column It Ta Ta
195: reported by millert Fri, 02 Apr 2010 16:13:46 -0400
1.48 schwarze 196:
1.83 schwarze 197: - .%T can have trailing punctuation. Currently, it puts the trailing
198: punctuation into a trailing MDOC_TEXT element inside its own scope.
199: That element should rather be outside its scope, such that the
200: punctuation does not get underlines. This is not trivial to
201: implement because .%T then needs some features of in_line_eoln() -
202: slurp all arguments into one single text element - and one feature
203: of in_line() - put trailing punctuation out of scope.
204: Found in mount_nfs(8) and exports(5), search for "Appendix".
205:
1.48 schwarze 206: - in enclosures, mandoc sometimes fancies a bogus end of sentence
207: reminded by jmc@ Thu, 23 Sep 2010 18:13:39 +0059
1.35 kristaps 208:
1.1 kristaps 209: ************************************************************************
1.104 kristaps 210: * formatting issues: gratuitous differences
1.1 kristaps 211: ************************************************************************
1.65 kristaps 212:
213: - .Rv (and probably .Ex) print different text if an `Nm' has been named
214: or not (run a manual without `Nm blah' to see this). I'm not sure
215: that this exists in the wild, but it's still an error.
1.38 schwarze 216:
217: - In .Bl -bullet, the groff bullet is "+\b+\bo\bo", the mandoc bullet
218: is just "o\bo".
219: see for example OpenBSD ksh(1)
220:
221: - The characters "|" and "\*(Ba" should never be bold,
222: not even in the middle of a word, e.g. ".Cm b\*(Bac" in
223: "mknod [-m mode] name b|c major minor"
224: in OpenBSD ksh(1)
225:
226: - A bogus .Pp between two .It must not produce a double blank line,
1.39 schwarze 227: see between -R and -r in OpenBSD rm(1), before "update" in mount(8),
1.83 schwarze 228: or in DIAGNOSTICS in init(8), or before "is always true" in ksh(1).
229: The same happens with .Pp just before .El, see bgpd.conf(5).
1.68 kristaps 230: Also have `It' complain if `Pp' is invoked at certain times (not
231: -compact?).
1.103 schwarze 232:
233: - .Pp between two .It in .Bl -column should produce one,
234: not two blank lines, see e.g. login.conf(5).
235: reported by jmc@ Sun, 17 Apr 2011 14:04:58 +0059
1.39 schwarze 236:
1.83 schwarze 237: - If the *first* line after .It is .Pp, break the line right after
238: the tag, do not pad with space characters before breaking.
239: See the description of the a, c, and i commands in sed(1).
240:
241: - If the first line after .It is .D1, do not assert a blank line
242: in between, see for example tmux(1).
243: reported by nicm@ 13 Jan 2011 00:18:57 +0000
244:
1.39 schwarze 245: - .Nx 1.0a
246: should be "NetBSD 1.0A", not "NetBSD 1.0a",
247: see OpenBSD ccdconfig(8).
1.83 schwarze 248:
1.39 schwarze 249: - In .Bl -tag, if a tag exceeds the right margin and must be continued
250: on the next line, it must be indented by -width, not width+1;
251: see "rule block|pass" in OpenBSD ifconfig(8).
1.56 schwarze 252:
1.83 schwarze 253: - When the -width string contains macros, the macros must be rendered
254: before measuring the width, for example
255: .Bl -tag -width ".Dv message"
256: in magic(5), located in src/usr.bin/file, is the same
257: as -width 7n, not -width 11n.
258:
1.56 schwarze 259: - The \& zero-width character counts as output.
260: That is, when it is alone on a line between two .Pp,
261: we want three blank lines, not two as in mandoc.
1.63 schwarze 262:
263: - When .Fn arguments exceed one output line, all but the first
264: should be indented, see e.g. rpc(3);
265: reported by jmc@ on discuss@ Fri, 29 Oct 2010 13:48:33 +0100
1.83 schwarze 266:
267: - .Ns should work when called at the end of an input line, see
268: the following code in vi(1):
269: .It Xo
270: .Op Ar line
271: .Cm a Ns Op Cm ppend Ns
272: .Op Cm !\&
273: .Xc
274: The input text is appended after the specified line.
275:
1.64 schwarze 276: - Header lines of excessive length:
277: Port OpenBSD man_term.c rev. 1.25 to mdoc_term.c
278: and document it in mdoc(7) and man(7) COMPATIBILITY
279: found while talking to Chris Bennett
1.83 schwarze 280:
281: - In man(7), the sequence
282: .HP
283: one line of regular text
284: .SH
285: should not produce two blank lines before the .SH,
286: see for example named-checkconf(8).
287:
288: - In man(7), the sequence
289: regular text
290: .RS
291: .IP
292: should have a blank line between the text and the beginning of the
293: indented paragraph, see for example sudo(1).
1.98 schwarze 294:
295: - In man(7), the sequence
296: .SH HEADER
297: <blank line>
298: .PP
299: regular text
300: should not produce any blank lines between the header and the text,
301: see for example rsync(1).
302: Reported by naddy@ Mon, 28 Mar 2011 20:45:42 +0200
303:
304: - In man(7), the sequence
305: regular text
306: .PP
307: .RS
308: indented text
309: should produce one blank line between the regular and indented texts,
310: see for example rsync(1), and
311: .RE
312: <blank line>
313: .PP
314: .RS
315: should produce two,not one blank lines.
316: Reported by naddy@ Mon, 28 Mar 2011 20:45:42 +0200
317:
318: - In man(7), the sequence
319: regular text
320: .IP
321: .IP "tag"
322: indented text
323: should produce one, not four blank lines between the regular text
324: and the tag, see for example rsync(1).
325: Likewise,
326: regular text
327: .IP
328: indented text
329: should produce one, not two blank lines in between, and
330: regular text
331: .IP
332: .RS
333: .IP tag
334: indented text
335: should produce one, not three blank lines.
336: Reported by naddy@ Mon, 28 Mar 2011 20:45:42 +0200
1.83 schwarze 337:
338: - At least sometimes, .sp is ignored right after .SH; see named.conf(5).
339:
340: - trailing whitespace must be ignored even when followed by a font escape,
341: see for example
342: makes
343: \fBdig \fR
344: operate in batch mode
345: in dig(1).
1.75 schwarze 346:
347: ************************************************************************
348: * error reporting issues
349: ************************************************************************
1.1 kristaps 350:
1.9 kristaps 351: ************************************************************************
352: * performance issues
353: ************************************************************************
354:
355: Several areas can be cleaned up to make mandoc even faster. These are
356:
357: - improve hashing mechanism for macros (quite important: performance)
358:
359: - improve hashing mechanism for characters (not as important)
1.23 kristaps 360:
1.37 kristaps 361: - the PDF file is HUGE: this can be reduced by using relative offsets
362:
1.23 kristaps 363: ************************************************************************
364: * structural issues
365: ************************************************************************
1.67 schwarze 366:
367: - Find better ways to prevent endless loops
368: in roff(7) macro and string expansion.
1.91 schwarze 369:
1.96 schwarze 370: - Finish cleanup of date handling.
1.91 schwarze 371: Decide which formats should be recognized where.
372: Update both mdoc(7) and man(7) documentation.
373: Triggered by Tim van der Molen Tue, 22 Feb 2011 20:30:45 +0100
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