1 .\" $Id: mandoc.1,v 1.108 2014/08/22 04:52:55 schwarze Exp $
3 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 .\" Copyright (c) 2012, 2014 Ingo Schwarze <schwarze@openbsd.org>
6 .\" Permission to use, copy, modify, and distribute this software for any
7 .\" purpose with or without fee is hereby granted, provided that the above
8 .\" copyright notice and this permission notice appear in all copies.
10 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 .Dd $Mdocdate: August 22 2014 $
23 .Nd format and display UNIX manuals
28 .Op Fl I Cm os Li = Ar name
40 manual pages for display.
48 text from stdin, implying
54 The arguments are as follows:
57 If the standard output is a terminal device and
61 to paginate the output, just like
65 Copy the formatted manual pages to the standard output without using
69 It can be specified to override
72 .It Fl I Cm os Li = Ar name
74 Override the default operating system
84 for available formats.
88 Comma-separated output options.
93 for available formats.
97 Print version and exit.
99 Specify the minimum message
101 to be reported on the standard error output and to affect the exit status.
113 .Fl W Ns Cm warning .
124 to exit after parsing a file that causes warnings or errors of at least
126 No formatted output will be produced from that file.
131 are requested, they can be joined with a comma, for example
132 .Fl W Ns Cm error , Ns Cm stop .
134 Read input from zero or more files.
135 If unspecified, reads from stdin.
136 If multiple files are specified,
138 will halt with the first failed parse.
158 should only be used for legacy manuals.
162 which is also the default, determines encoding on-the-fly: if the first
169 parser is used; otherwise, the
174 files are specified with
176 each has its file-type determined this way.
177 If multiple files are
182 is specified, then this format is used exclusively.
186 utility accepts the following
188 arguments, which correspond to output modes:
189 .Bl -tag -width "-Tlocale"
191 Produce 7-bit ASCII output.
196 Produce strict CSS1/HTML-4.01 output.
200 Parse only: produce no output.
202 .Fl W Ns Cm warning .
203 .It Fl T Ns Cm locale
204 Encode output using the current locale.
218 Produce PostScript output.
220 .Sx PostScript Output .
222 Produce an indented parse tree.
224 Encode output in the UTF\-8 multi-byte format.
228 Produce strict CSS1/XHTML-1.0 output.
233 If multiple input files are specified, these will be processed by the
234 corresponding filter in-order.
238 which is the default, is rendered in standard 7-bit ASCII documented in
241 Font styles are applied by using back-spaced encoding such that an
245 .Sq _ Ns \e[bs] Ns c ,
248 is the back-space character number 8.
249 Emboldened characters are rendered as
250 .Sq c Ns \e[bs] Ns c .
252 The special characters documented in
254 are rendered best-effort in an ASCII equivalent.
255 If no equivalent is found,
259 Output width is limited to 78 visible columns unless literal input lines
264 arguments are accepted:
266 .It Cm indent Ns = Ns Ar indent
267 The left margin for normal text is set to
269 blank characters instead of the default of five for
273 Increasing this is not recommended; it may result in degraded formatting,
274 for example overfull lines or ugly line breaks.
275 .It Cm width Ns = Ns Ar width
276 The output width is set to
278 which will normalise to \(>=60.
283 conforms to HTML-4.01 strict.
286 .Pa example.style.css
287 file documents style-sheet classes available for customising output.
288 If a style-sheet is not specified with
291 defaults to simple output readable in any graphical or text-based web
294 Special characters are rendered in decimal-encoded UTF\-8.
298 arguments are accepted:
308 elements and only emit the subtree below the
313 argument will be ignored.
314 This is useful when embedding manual content within existing documents.
315 .It Cm includes Ns = Ns Ar fmt
320 is used as a template for linked header files (usually via the
325 are replaced with the include filename.
326 The default is not to present a
328 .It Cm man Ns = Ns Ar fmt
332 .Ar ../html%S/%N.%S.html ,
333 is used as a template for linked manuals (usually via the
340 are replaced with the linked manual's name and section, respectively.
341 If no section is included, section 1 is assumed.
342 The default is not to
344 .It Cm style Ns = Ns Ar style.css
347 is used for an external style-sheet.
348 This must be a valid absolute or
352 Locale-depending output encoding is triggered with
354 This option is not available on all systems: systems without locale
355 support, or those whose internal representation is not natively UCS-4,
360 for font style specification and available command-line arguments.
362 Translate input format into
365 This is useful for distributing manual sources to legacy systems
372 is passed as input, it is translated into
374 If the input format is
376 the input is copied to the output, expanding any
380 The parser is also run, and as usual, the
384 are displayed before copying the input to the output.
386 PDF-1.1 output may be generated by
389 .Sx PostScript Output
392 arguments and defaults.
393 .Ss PostScript Output
396 Level-2 pages may be generated by
398 Output pages default to letter sized and are rendered in the Times font
400 Margins are calculated as 1/9 the page length and width.
403 Special characters are rendered as in
408 arguments are accepted:
410 .It Cm paper Ns = Ns Ar name
420 You may also manually specify dimensions as
422 width by height in millimetres.
423 If an unknown value is encountered,
430 to force a UTF\-8 locale.
433 for details and options.
437 conforms to XHTML-1.0 strict.
441 for details; beyond generating XHTML tags instead of HTML tags, these
442 output modes are identical.
444 .Bl -tag -width MANPAGER
446 Any non-empty value of the environment variable
448 will be used instead of the standard pagination program,
451 Specifies the pagination program to use when
454 If neither PAGER nor MANPAGER is defined,
455 .Pa /usr/bin/more Fl s
461 utility exits with one of the following values, controlled by the message
467 .Bl -tag -width Ds -compact
469 No warnings or errors occurred, or those that did were ignored because
470 they were lower than the requested
473 At least one warning occurred, but no error, and
477 At least one parsing error occurred, but no fatal error, and
483 A fatal parsing error occurred.
485 Invalid command line arguments were specified.
486 No input files have been read.
488 An operating system error occurred, for example memory exhaustion or an
489 error accessing input files.
492 to exit at once, possibly in the middle of parsing or formatting a file.
498 .Fl W Ns Cm warning .
500 To page manuals to the terminal:
502 .Dl $ mandoc \-Wall,stop mandoc.1 2\*(Gt&1 | less
503 .Dl $ mandoc mandoc.1 mdoc.3 mdoc.7 | less
505 To produce HTML manuals with
509 .Dl $ mandoc \-Thtml -Ostyle=style.css mdoc.7 \*(Gt mdoc.7.html
511 To check over a large set of manuals:
513 .Dl $ mandoc \-Tlint `find /usr/src -name \e*\e.[1-9]`
515 To produce a series of PostScript manuals for A4 paper:
517 .Dl $ mandoc \-Tps \-Opaper=a4 mdoc.7 man.7 \*(Gt manuals.ps
523 format, for use on systems lacking an
527 .Dl $ mandoc \-Tman foo.mdoc \*(Gt foo.man
529 Messages displayed by
533 .D1 Nm Ns : Ar file : Ns Ar line : Ns Ar column : level : message : macro args
535 Line and column numbers start at 1.
536 Both are omitted for messages referring to an input file as a whole.
537 Macro names and arguments are omitted where meaningless.
538 Fatal messages about invalid command line arguments
539 or operating system errors, for example when memory is exhausted,
546 Message levels have the following meanings:
547 .Bl -tag -width "warning"
549 Opening or reading an input file failed, so the parser cannot
550 even be started and no output is produced from that input file.
552 The parser is unable to parse a given input file at all.
553 No formatted output is produced from that input file.
555 An input file contains syntax that cannot be safely interpreted,
556 either because it is invalid or because
558 does not implement it yet.
559 By discarding part of the input or inserting missing tokens,
560 the parser is able to continue, and the error does not prevent
561 generation of formatted output, but typically, preparing that
562 output involves information loss, broken document structure
563 or unintended formatting.
565 An input file uses obsolete, discouraged or non-portable syntax.
566 All the same, the meaning of the input is unambiguous and a correct
567 rendering can be produced.
568 Documents causing warnings may render poorly when using other
569 formatting tools instead of
577 levels are hidden unless their level, or a lower level, is requested using a
582 .Ss Warnings related to the document prologue
584 .It Sy "missing manual title, using UNTITLED"
588 macro has no arguments, or there is no
590 macro before the first non-prologue macro.
591 .It Sy "missing manual title, using \(dq\(dq"
595 macro, or it has no arguments.
596 .It Sy "lower case character in document title"
598 The title is still used as given in the
603 .It Sy "missing manual section, using \(dq\(dq"
609 macro lacks the mandatory section argument.
610 .It Sy "unknown manual section"
612 The section number in a
614 line is invalid, but still used.
615 .It Sy "unknown manual volume or arch"
619 line is invalid, but still used.
620 The manual is assumed to be architecture-independent.
621 .It Sy "missing date, using today's date"
623 The document was parsed as
629 macro has no arguments or only empty arguments;
630 or the document was parsed as
636 macro has less than three arguments or its third argument is empty.
637 .It Sy "cannot parse date, using it verbatim"
643 macro does not follow the conventional format.
644 .It Sy "missing Os macro, using \(dq\(dq"
646 The default or current system is not shown in this case.
647 .It Sy "duplicate prologue macro"
649 One of the prologue macros occurs more than once.
650 The last instance overrides all previous ones.
651 .It Sy "late prologue macro"
657 macro occurs after some non-prologue macro, but still takes effect.
658 .It Sy "skipping late title macro"
662 macro can only occur before the first non-prologue macro
663 because traditional formatters write the page header
664 before parsing the document body.
665 Even though this technical restriction does not apply to
667 traditional semantics is preserved.
668 The late macro is discarded including its arguments.
669 .It Sy "prologue macros out of order"
671 The prologue macros are not given in the conventional order
675 All three macros are used even when given in another order.
677 .Ss Warnings regarding document structure
679 .It Sy ".so is fragile, better use ln(1)"
681 Including files only works when the parser program runs with the correct
682 current working directory.
683 .It Sy "no document body"
685 The document body contains neither text nor macros.
686 An empty document is shown, consisting only of a header and a footer line.
687 .It Sy "content before first section header"
689 Some macros or text precede the first
694 The offending macros and text are parsed and added to the top level
695 of the syntax tree, outside any section block.
696 .It Sy "first section is not NAME"
698 The argument of the first
706 .It Sy "bad NAME section contents"
708 The last node in the NAME section is not an
710 macro, or any preceding macro is not
712 or the NAME section is completely empty.
717 .It Sy "sections out of conventional order"
719 A standard section occurs after another section it usually precedes.
720 All section titles are used as given,
721 and the order of sections is not changed.
722 .It Sy "duplicate section title"
724 The same standard section title occurs more than once.
725 .It Sy "unexpected section"
727 A standard section header occurs in a section of the manual
728 where it normally isn't useful.
730 .Ss "Warnings related to macros and nesting"
732 .It Sy "obsolete macro"
736 manual for replacements.
737 .It Sy "skipping paragraph macro"
740 documents, this happens
743 at the beginning and end of sections and subsections
745 right before non-compact lists and displays
747 at the end of items in non-column, non-compact lists
749 and for multiple consecutive paragraph macros.
753 documents, it happens
765 macros having neither head nor body arguments
776 .It Sy "moving paragraph macro out of list"
780 list contains a trailing paragraph macro.
781 The paragraph macro is moved after the end of the list.
782 .It Sy "skipping no-space macro"
784 An input line begins with an
787 The macro is ignored.
788 .It Sy "blocks badly nested"
790 If two blocks intersect, one should completely contain the other.
791 Otherwise, rendered output is likely to look strange in any output
792 format, and rendering in SGML-based output formats is likely to be
793 outright wrong because such languages do not support badly nested
795 Typical examples of badly nested blocks are
796 .Qq Ic \&Ao \&Bo \&Ac \&Bc
798 .Qq Ic \&Ao \&Bq \&Ac .
806 .It Sy "nested displays are not portable"
813 display occurs nested inside another
818 but fails with most other implementations.
819 .It Sy "moving content out of list"
823 list block contains text or macros before the first
826 The offending children are moved before the beginning of the list.
827 .It Sy ".Vt block has child macro"
831 macro supports plain text arguments only.
832 Formatting may be ugly and semantic searching
833 for the affected content might not work.
834 .It Sy "fill mode already enabled, skipping"
838 request occurs even though the document is still in fill mode,
839 or already switched back to fill mode.
841 .It Sy "fill mode already disabled, skipping"
845 request occurs even though the document already switched to no-fill mode
846 and did not switch back to fill mode yet.
848 .It Sy "line scope broken"
850 While parsing the next-line scope of the previous macro,
851 another macro is found that prematurely terminates the previous one.
852 The previous, interrupted macro is deleted from the parse tree.
854 .Ss "Warnings related to missing arguments"
856 .It Sy "skipping empty request"
858 The macro name is missing from a macro definition request.
859 .It Sy "conditional request controls empty scope"
861 A conditional request is only useful if any of the following
862 follows it on the same logical input line:
867 keyword to open a multi-line scope.
869 A request or macro or some text, resulting in a single-line scope.
871 The immediate end of the logical line without any intervening whitespace,
872 resulting in next-line scope.
874 Here, a conditional request is followed by trailing whitespace only,
875 and there is no other content on its logical input line.
876 Note that it doesn't matter whether the logical input line is split
877 across multiple physical input lines using
879 line continuation characters.
880 This is one of the rare cases
881 where trailing whitespace is syntactically significant.
882 The conditional request controls a scope containing whitespace only,
883 so it is unlikely to have a significant effect,
884 except that it may control a following
887 .It Sy "skipping empty macro"
889 The indicated macro has no arguments and hence no effect.
890 .It Sy "empty argument, using 0n"
892 The required width is missing after
899 .It Sy "argument count wrong"
901 The indicated macro has too few or too many arguments.
902 The syntax tree will contain the wrong number of arguments as given.
903 Formatting behaviour depends on the specific macro in question.
904 Note that the same message may also occur as an ERROR, see below.
905 .It Sy "missing display type, using -ragged"
909 macro is invoked without the required display type.
910 .It Sy "list type is not the first argument"
914 macro, at least one other argument precedes the type argument.
917 utility copes with any argument order, but some other
919 implementations do not.
920 .It Sy "missing -width in -tag list, using 8n"
929 .It Sy "missing utility name, using \(dq\(dq"
933 macro is called without an argument before
935 has first been called with an argument.
936 .It Sy "empty head in list item"
948 macro lacks the required argument.
949 The item head is left empty.
950 .It Sy "empty list item"
962 An empty list item is shown.
963 .It Sy "missing font type"
967 macro has no argument.
968 It switches to the default font,
970 .It Sy "unknown font type"
978 .It Sy "missing -std argument, adding it"
984 macro lacks the required
991 even when it is not specified, but other implementations may not.
993 .Ss "Warnings related to bad macro arguments"
995 .It Sy "unterminated quoted argument"
997 Macro arguments can be enclosed in double quote characters
998 such that space characters and macro names contained in the quoted
999 argument need not be escaped.
1000 The closing quote of the last argument of a macro can be omitted.
1001 However, omitting it is not recommended because it makes the code
1003 .It Sy "duplicate argument"
1009 macro has more than one
1016 All but the last instances of these arguments are ignored.
1017 .It Sy "skipping duplicate argument"
1021 macro has more than one
1026 All but the first of these arguments are ignored.
1027 .It Sy "skipping duplicate display type"
1031 macro has more than one type argument; the first one is used.
1032 .It Sy "skipping duplicate list type"
1036 macro has more than one type argument; the first one is used.
1037 .It Sy "skipping -width argument"
1051 .It Sy "unknown AT&T UNIX version"
1055 macro has an invalid argument.
1056 It is used verbatim, with
1059 .It Sy "invalid content in Rs block"
1063 block contains plain text or non-% macros.
1064 The bogus content is left in the syntax tree.
1065 Formatting may be poor.
1066 .It Sy "invalid Boolean argument"
1070 macro has an argument other than
1074 The invalid argument is moved out of the macro, which leaves the macro
1075 empty, causing it to toggle the spacing mode.
1076 .It Sy "unknown font, skipping request"
1081 request has an invalid argument.
1083 .Ss "Warnings related to plain text"
1085 .It Sy "blank line in fill mode, using .sp"
1087 The meaning of blank input lines is only well-defined in non-fill mode:
1088 In fill mode, line breaks of text input lines are not supposed to be
1090 However, for compatibility with groff, blank lines in fill mode
1094 .It Sy "tab in filled text"
1096 The meaning of tab characters is only well-defined in non-fill mode:
1097 In fill mode, whitespace is not supposed to be significant
1098 on text input lines.
1099 As an implementation dependent choice, tab characters on text lines
1100 are passed through to the formatters in any case.
1101 Given that the text before the tab character will be filled,
1102 it is hard to predict which tab stop position the tab will advance to.
1103 .It Sy "whitespace at end of input line"
1104 .Pq mdoc , man , roff
1105 Whitespace at the end of input lines is almost never semantically
1106 significant \(em but in the odd case where it might be, it is
1107 extremely confusing when reviewing and maintaining documents.
1108 .It Sy "bad comment style"
1110 Comment lines start with a dot, a backslash, and a double-quote character.
1113 utility treats the line as a comment line even without the backslash,
1114 but leaving out the backslash might not be portable.
1115 .It Sy "invalid escape sequence"
1117 An escape sequence has an invalid opening argument delimiter, lacks the
1118 closing argument delimiter, or the argument has too few characters.
1119 If the argument is incomplete,
1123 expand to an empty string,
1129 to the length of the incomplete argument.
1130 All other invalid escape sequences are ignored.
1131 .It Sy "undefined string, using \(dq\(dq"
1133 If a string is used without being defined before,
1134 its value is implicitly set to the empty string.
1135 However, defining strings explicitly before use
1136 keeps the code more readable.
1138 .Ss "Errors related to equations"
1140 .It "unexpected equation scope closure"
1141 .It "equation scope open on exit"
1142 .It "overlapping equation scopes"
1143 .It "unexpected end of equation"
1144 .It "equation syntax error"
1146 .Ss "Errors related to tables"
1148 .It "bad table syntax"
1149 .It "bad table option"
1150 .It "bad table layout"
1151 .It "no table layout cells specified"
1152 .It "no table data cells specified"
1153 .It "ignore data in cell"
1154 .It "data block still open"
1155 .It "ignoring extra data cells"
1157 .Ss "Errors related to roff, mdoc, and man code"
1159 .It Sy "input stack limit exceeded, infinite loop?"
1161 Explicit recursion limits are implemented for the following features,
1162 in order to prevent infinite loops:
1165 expansion of nested escape sequences
1166 including expansion of strings and number registers,
1168 expansion of nested user-defined macros,
1174 When a limit is hit, the output is incorrect, typically losing
1175 some content, but the parser can continue.
1176 .It Sy "skipping bad character"
1177 .Pq mdoc , man , roff
1178 The input file contains a byte that is not a printable
1181 The message mentions the character number.
1182 The offending byte is replaced with a question mark
1184 Consider editing the input file to replace the byte with an ASCII
1185 transliteration of the intended character.
1186 .It Sy "skipping unknown macro"
1187 .Pq mdoc , man , roff
1188 The first identifier on a request or macro line is neither recognized as a
1190 request, nor as a user-defined macro, nor, respectively, as an
1195 It may be mistyped or unsupported.
1196 The request or macro is discarded including its arguments.
1197 .It Sy "skipping item outside list"
1201 macro occurs outside any
1204 It is discarded including its arguments.
1205 .It Sy "skipping column outside column list"
1209 macro occurs outside any
1212 It is discarded including its arguments.
1213 .It Sy "skipping end of block that is not open"
1214 .Pq mdoc , man , eqn , tbl , roff
1215 Various syntax elements can only be used to explicitly close blocks
1216 that have previously been opened.
1219 block closing macro, a
1224 macro, or the end of an equation, table, or
1226 conditional request is encountered but no matching block is open.
1227 The offending request or macro is discarded.
1228 .It Sy "inserting missing end of block"
1232 macros as well as tables require explicit closing by dedicated macros.
1233 A block that doesn't support bad nesting
1234 ends before all of its children are properly closed.
1235 The open child nodes are closed implicitly.
1236 .It Sy "scope open on exit"
1237 .Pq mdoc , man , eqn , tbl , roff
1238 At the end of the document, an explicit
1246 block, an equation, table, or
1248 conditional or ignore block is still open.
1249 The open block is closed implicitly.
1250 .It Sy "escaped character not allowed in a name"
1252 Macro, string and register identifiers consist of printable,
1253 non-whitespace ASCII characters.
1254 Escape sequences and characters and strings expressed in terms of them
1255 cannot form part of a name.
1256 The first argument of an
1264 request, or any argument of an
1266 request, or the name of a request or user defined macro being called,
1267 is terminated by an escape sequence.
1273 the request has no effect at all.
1280 what was parsed up to this point is used as the arguments to the request,
1281 and the rest of the input line is discarded including the escape sequence.
1282 When parsing for a request or a user-defined macro name to be called,
1283 only the escape sequence is discarded.
1284 The characters preceding it are used as the request or macro name,
1285 the characters following it are used as the arguments to the request or macro.
1286 .It Sy "argument count wrong"
1287 .Pq mdoc , man , roff
1288 The indicated request or macro has too few or too many arguments.
1289 The syntax tree will contain the wrong number of arguments as given.
1290 Formatting behaviour depends on the specific request or macro in question.
1291 Note that the same message may also occur as a WARNING, see above.
1292 .It Sy "missing list type, using -item"
1296 macro fails to specify the list type.
1297 .It Sy "missing manual name, using \(dq\(dq"
1301 lacks the required argument.
1302 .It Sy "uname(3) system call failed, using UNKNOWN"
1306 macro is called without arguments, and the
1311 can be compiled with
1313 .Fl D Cm OSNAME=\(dq\e\(dq Ar string Cm \e\(dq\(dq .
1315 .It Sy "unknown standard specifier"
1319 macro has an unknown argument and is discarded.
1320 .It Sy "skipping request without numeric argument"
1324 request has a non-numeric or negative argument or no argument at all.
1325 The invalid request is ignored.
1326 .It Sy "skipping all arguments"
1327 .Pq mdoc , man , eqn , roff
1340 macro in a list that don't support item heads, a
1352 block closing request is invoked with at least one argument.
1353 All arguments are ignored.
1354 .It Sy "skipping excess arguments"
1358 macro is invoked with more than one argument, or a request of the
1360 family is invoked with more than two arguments.
1361 The excess arguments are ignored.
1365 .It Sy "input too large"
1369 cannot handle input files larger than its arbitrary size limit
1370 of 2^31 bytes (2 Gigabytes).
1371 Since useful manuals are always small, this is not a problem in practice.
1372 Parsing is aborted as soon as the condition is detected.
1373 .It Sy "NOT IMPLEMENTED: Bd -file"
1375 For security reasons, the
1377 macro does not support the
1380 By requesting the inclusion of a sensitive file, a malicious document
1381 might otherwise trick a privileged user into inadvertently displaying
1382 the file on the screen, revealing the file content to bystanders.
1383 The parser exits immediately.
1384 .It Sy "NOT IMPLEMENTED: .so with absolute path or \(dq..\(dq"
1386 For security reasons,
1390 file inclusion requests only with relative paths
1391 and only without ascending to any parent directory.
1392 By requesting the inclusion of a sensitive file, a malicious document
1393 might otherwise trick a privileged user into inadvertently displaying
1394 the file on the screen, revealing the file content to bystanders.
1395 The parser exits immediately.
1396 .It Sy ".so request failed"
1400 request requires reading an external file.
1401 While trying to do so, an
1407 The parser exits immediately.
1408 Before showing this message,
1410 always shows another message explaining why the system call failed.
1413 This section summarises
1415 compatibility with GNU troff.
1416 Each input and output format is separately noted.
1417 .Ss ASCII Compatibility
1418 .Bl -bullet -compact
1420 Unrenderable unicode codepoints specified with
1422 escapes are printed as
1425 In GNU troff, these raise an error.
1435 are synonyms, as are \-filled and \-ragged.
1437 In historic GNU troff, the
1440 macro does not underline when scoped under an
1442 in the FILES section.
1443 This behaves correctly in
1446 A list or display following the
1451 does not assert a prior vertical break, just as it doesn't with
1461 Words aren't hyphenated.
1463 .Ss HTML/XHTML Compatibility
1464 .Bl -bullet -compact
1468 escape will revert the font to the previous
1470 escape, not to the last rendered decoration, which is now dictated by
1471 CSS instead of hard-coded.
1472 It also will not span past the current scope,
1473 for the same reason.
1476 mode, this will work fine.
1483 list types render similarly (no break following overreached left-hand
1484 side) due to the expressive constraints of HTML.
1491 lists render similarly.
1503 utility was written by
1504 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
1510 the maximum size of an element attribute is determined by
1512 which is usually 1024 bytes.
1513 Be aware of this when setting long link
1515 .Fl O Ns Cm style Ns = Ns Ar really/long/link .
1517 Nesting elements within next-line element scopes of
1527 and cause them to forget the formatting of the prior next-line scope.
1531 control character is an alias for the standard macro control character
1532 and does not emit a line-break as stipulated in GNU troff.
git.ckatri.com / mandoc.git / blob