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Annotation of mandoc/mandoc.1, Revision 1.83

1.83    ! kristaps    1: .\"    $Id: mandoc.1,v 1.82 2010/12/17 11:18:57 kristaps Exp $
1.1       kristaps    2: .\"
1.72      schwarze    3: .\" Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.1       kristaps    4: .\"
                      5: .\" Permission to use, copy, modify, and distribute this software for any
1.16      kristaps    6: .\" purpose with or without fee is hereby granted, provided that the above
                      7: .\" copyright notice and this permission notice appear in all copies.
1.1       kristaps    8: .\"
1.16      kristaps    9: .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10: .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11: .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12: .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13: .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14: .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15: .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   16: .\"
1.83    ! kristaps   17: .Dd $Mdocdate: December 17 2010 $
1.14      kristaps   18: .Dt MANDOC 1
1.1       kristaps   19: .Os
                     20: .Sh NAME
                     21: .Nm mandoc
1.8       kristaps   22: .Nd format and display UNIX manuals
1.1       kristaps   23: .Sh SYNOPSIS
                     24: .Nm mandoc
1.58      kristaps   25: .Op Fl V
1.8       kristaps   26: .Op Fl m Ns Ar format
1.58      kristaps   27: .Op Fl O Ns Ar option
1.37      kristaps   28: .Op Fl T Ns Ar output
1.77      schwarze   29: .Op Fl W Ns Ar level
1.58      kristaps   30: .Op Ar file...
1.1       kristaps   31: .Sh DESCRIPTION
                     32: The
                     33: .Nm
1.26      kristaps   34: utility formats
1.8       kristaps   35: .Ux
1.57      kristaps   36: manual pages for display.
                     37: The arguments are as follows:
1.19      kristaps   38: .Bl -tag -width Ds
                     39: .It Fl m Ns Ar format
1.57      kristaps   40: Input format.
                     41: See
1.8       kristaps   42: .Sx Input Formats
1.57      kristaps   43: for available formats.
                     44: Defaults to
1.58      kristaps   45: .Fl m Ns Cm andoc .
                     46: .It Fl O Ns Ar option
1.57      kristaps   47: Comma-separated output options.
1.19      kristaps   48: .It Fl T Ns Ar output
1.57      kristaps   49: Output format.
                     50: See
1.1       kristaps   51: .Sx Output Formats
1.57      kristaps   52: for available formats.
                     53: Defaults to
1.58      kristaps   54: .Fl T Ns Cm ascii .
1.1       kristaps   55: .It Fl V
                     56: Print version and exit.
1.77      schwarze   57: .It Fl W Ns Ar level
                     58: Specify the minimum message
                     59: .Ar level
                     60: to be reported on the standard error output and to affect the exit status.
                     61: The
                     62: .Ar level
                     63: can be
                     64: .Cm warning ,
                     65: .Cm error ,
                     66: or
                     67: .Cm fatal .
                     68: The default is
                     69: .Fl W Ns Cm fatal ;
1.58      kristaps   70: .Fl W Ns Cm all
1.77      schwarze   71: is an alias for
                     72: .Fl W Ns Cm warning .
                     73: See
                     74: .Sx EXIT STATUS
                     75: and
                     76: .Sx DIAGNOSTICS
                     77: for details.
                     78: .Pp
                     79: The special option
                     80: .Fl W Ns Cm stop
                     81: tells
                     82: .Nm
                     83: to exit after parsing a file that causes warnings or errors of at least
                     84: the requested level.
                     85: No formatted output will be produced from that file.
                     86: If both a
                     87: .Ar level
                     88: and
                     89: .Cm stop
                     90: are requested, they can be joined with a comma, for example
                     91: .Fl W Ns Cm error , Ns Cm stop .
1.58      kristaps   92: .It Ar file
                     93: Read input from zero or more files.
1.57      kristaps   94: If unspecified, reads from stdin.
                     95: If multiple files are specified,
1.2       kristaps   96: .Nm
                     97: will halt with the first failed parse.
1.1       kristaps   98: .El
                     99: .Pp
1.26      kristaps  100: By default,
                    101: .Nm
                    102: reads
1.8       kristaps  103: .Xr mdoc 7
1.12      kristaps  104: or
                    105: .Xr man 7
1.8       kristaps  106: text from stdin, implying
1.58      kristaps  107: .Fl m Ns Cm andoc ,
1.48      kristaps  108: and produces
1.58      kristaps  109: .Fl T Ns Cm ascii
1.48      kristaps  110: output.
1.8       kristaps  111: .Ss Input Formats
                    112: The
                    113: .Nm
                    114: utility accepts
                    115: .Xr mdoc 7
                    116: and
                    117: .Xr man 7
                    118: input with
1.58      kristaps  119: .Fl m Ns Cm doc
1.8       kristaps  120: and
1.58      kristaps  121: .Fl m Ns Cm an ,
1.57      kristaps  122: respectively.
                    123: The
1.8       kristaps  124: .Xr mdoc 7
                    125: format is
                    126: .Em strongly
1.26      kristaps  127: recommended;
1.8       kristaps  128: .Xr man 7
                    129: should only be used for legacy manuals.
1.11      kristaps  130: .Pp
1.12      kristaps  131: A third option,
1.58      kristaps  132: .Fl m Ns Cm andoc ,
1.13      kristaps  133: which is also the default, determines encoding on-the-fly: if the first
1.26      kristaps  134: non-comment macro is
1.27      kristaps  135: .Sq \&Dd
1.13      kristaps  136: or
1.27      kristaps  137: .Sq \&Dt ,
1.26      kristaps  138: the
1.13      kristaps  139: .Xr mdoc 7
                    140: parser is used; otherwise, the
                    141: .Xr man 7
                    142: parser is used.
                    143: .Pp
                    144: If multiple
1.26      kristaps  145: files are specified with
1.58      kristaps  146: .Fl m Ns Cm andoc ,
1.57      kristaps  147: each has its file-type determined this way.
                    148: If multiple files are
1.13      kristaps  149: specified and
1.58      kristaps  150: .Fl m Ns Cm doc
1.12      kristaps  151: or
1.58      kristaps  152: .Fl m Ns Cm an
1.12      kristaps  153: is specified, then this format is used exclusively.
1.1       kristaps  154: .Ss Output Formats
                    155: The
                    156: .Nm
                    157: utility accepts the following
                    158: .Fl T
1.66      kristaps  159: arguments, which correspond to output modes:
1.19      kristaps  160: .Bl -tag -width Ds
1.58      kristaps  161: .It Fl T Ns Cm ascii
1.81      kristaps  162: Produce 7-bit ASCII output.
1.57      kristaps  163: This is the default.
                    164: See
1.48      kristaps  165: .Sx ASCII Output .
1.58      kristaps  166: .It Fl T Ns Cm html
1.81      kristaps  167: Produce strict CSS1/HTML-4.01 output.
1.57      kristaps  168: See
1.48      kristaps  169: .Sx HTML Output .
1.58      kristaps  170: .It Fl T Ns Cm lint
                    171: Parse only: produce no output.
                    172: Implies
1.77      schwarze  173: .Fl W Ns Cm warning .
1.73      kristaps  174: .It Fl T Ns Cm pdf
                    175: Produce PDF output.
                    176: See
                    177: .Sx PDF Output .
1.62      kristaps  178: .It Fl T Ns Cm ps
                    179: Produce PostScript output.
                    180: See
                    181: .Sx PostScript Output .
1.58      kristaps  182: .It Fl T Ns Cm tree
                    183: Produce an indented parse tree.
                    184: .It Fl T Ns Cm xhtml
1.81      kristaps  185: Produce strict CSS1/XHTML-1.0 output.
1.57      kristaps  186: See
1.50      kristaps  187: .Sx XHTML Output .
1.1       kristaps  188: .El
1.13      kristaps  189: .Pp
                    190: If multiple input files are specified, these will be processed by the
                    191: corresponding filter in-order.
1.66      kristaps  192: .Ss ASCII Output
                    193: Output produced by
                    194: .Fl T Ns Cm ascii ,
                    195: which is the default, is rendered in standard 7-bit ASCII documented in
                    196: .Xr ascii 7 .
                    197: .Pp
                    198: Font styles are applied by using back-spaced encoding such that an
                    199: underlined character
                    200: .Sq c
                    201: is rendered as
                    202: .Sq _ Ns \e[bs] Ns c ,
                    203: where
                    204: .Sq \e[bs]
                    205: is the back-space character number 8.
                    206: Emboldened characters are rendered as
                    207: .Sq c Ns \e[bs] Ns c .
                    208: .Pp
                    209: The special characters documented in
                    210: .Xr mandoc_char 7
                    211: are rendered best-effort in an ASCII equivalent.
                    212: .Pp
                    213: Output width is limited to 78 visible columns unless literal input lines
                    214: exceed this limit.
                    215: .Pp
                    216: The following
                    217: .Fl O
                    218: arguments are accepted:
1.19      kristaps  219: .Bl -tag -width Ds
1.66      kristaps  220: .It Cm width Ns = Ns Ar width
                    221: The output width is set to
                    222: .Ar width ,
                    223: which will normalise to \(>=60.
1.1       kristaps  224: .El
1.66      kristaps  225: .Ss HTML Output
                    226: Output produced by
                    227: .Fl T Ns Cm html
                    228: conforms to HTML-4.01 strict.
                    229: .Pp
1.61      kristaps  230: The
1.66      kristaps  231: .Pa example.style.css
1.83    ! kristaps  232: file documents style-sheet classes available for customising output.
        !           233: If a style-sheet is not specified with
        !           234: .Fl O Ns Ar style ,
        !           235: .Fl T Ns Cm html
        !           236: defaults to simple output readable in any graphical or text-based web
        !           237: browser.
1.66      kristaps  238: .Pp
                    239: Special characters are rendered in decimal-encoded UTF-8.
                    240: .Pp
                    241: The following
1.64      kristaps  242: .Fl O
1.66      kristaps  243: arguments are accepted:
1.37      kristaps  244: .Bl -tag -width Ds
1.64      kristaps  245: .It Cm includes Ns = Ns Ar fmt
1.40      kristaps  246: The string
                    247: .Ar fmt ,
1.49      kristaps  248: for example,
1.40      kristaps  249: .Ar ../src/%I.html ,
                    250: is used as a template for linked header files (usually via the
                    251: .Sq \&In
1.57      kristaps  252: macro).
                    253: Instances of
1.43      kristaps  254: .Sq \&%I
1.57      kristaps  255: are replaced with the include filename.
                    256: The default is not to present a
1.40      kristaps  257: hyperlink.
1.64      kristaps  258: .It Cm man Ns = Ns Ar fmt
1.39      kristaps  259: The string
                    260: .Ar fmt ,
1.49      kristaps  261: for example,
1.39      kristaps  262: .Ar ../html%S/%N.%S.html ,
                    263: is used as a template for linked manuals (usually via the
1.37      kristaps  264: .Sq \&Xr
1.57      kristaps  265: macro).
                    266: Instances of
1.43      kristaps  267: .Sq \&%N
1.40      kristaps  268: and
                    269: .Sq %S
                    270: are replaced with the linked manual's name and section, respectively.
1.57      kristaps  271: If no section is included, section 1 is assumed.
                    272: The default is not to
1.40      kristaps  273: present a hyperlink.
1.64      kristaps  274: .It Cm style Ns = Ns Ar style.css
1.58      kristaps  275: The file
                    276: .Ar style.css
                    277: is used for an external style-sheet.
                    278: This must be a valid absolute or
                    279: relative URI.
1.61      kristaps  280: .El
1.62      kristaps  281: .Ss PostScript Output
1.65      kristaps  282: PostScript
                    283: .Qq Adobe-3.0
                    284: Level-2 pages may be generated by
1.62      kristaps  285: .Fl T Ns Cm ps .
1.67      kristaps  286: Output pages default to letter sized and are rendered in the Times font
1.70      kristaps  287: family, 11-point.
                    288: Margins are calculated as 1/9 the page length and width.
1.71      kristaps  289: Line-height is 1.4m.
1.66      kristaps  290: .Pp
                    291: Special characters are rendered as in
                    292: .Sx ASCII Output .
                    293: .Pp
                    294: The following
                    295: .Fl O
                    296: arguments are accepted:
                    297: .Bl -tag -width Ds
                    298: .It Cm paper Ns = Ns Ar name
                    299: The paper size
                    300: .Ar name
                    301: may be one of
1.68      kristaps  302: .Ar a3 ,
                    303: .Ar a4 ,
                    304: .Ar a5 ,
                    305: .Ar legal ,
1.66      kristaps  306: or
                    307: .Ar letter .
1.68      kristaps  308: You may also manually specify dimensions as
                    309: .Ar NNxNN ,
                    310: width by height in millimetres.
                    311: If an unknown value is encountered,
                    312: .Ar letter
                    313: is used.
1.66      kristaps  314: .El
1.73      kristaps  315: .Ss PDF Output
                    316: PDF-1.1 output may be generated by
                    317: .Fl T Ns Cm pdf .
                    318: See
                    319: .Sx PostScript Output
                    320: for
                    321: .Fl O
                    322: arguments and defaults.
1.50      kristaps  323: .Ss XHTML Output
                    324: Output produced by
1.58      kristaps  325: .Fl T Ns Cm xhtml
1.50      kristaps  326: conforms to XHTML-1.0 strict.
                    327: .Pp
                    328: See
                    329: .Sx HTML Output
                    330: for details; beyond generating XHTML tags instead of HTML tags, these
                    331: output modes are identical.
1.77      schwarze  332: .Sh EXIT STATUS
                    333: The
                    334: .Nm
                    335: utility exits with one of the following values, controlled by the message
                    336: .Ar level
                    337: associated with the
                    338: .Fl W
                    339: option:
                    340: .Pp
                    341: .Bl -tag -width Ds -compact
                    342: .It 0
                    343: No warnings or errors occurred, or those that did were ignored because
                    344: they were lower than the requested
                    345: .Ar level .
                    346: .It 2
                    347: At least one warning occurred, but no error, and
                    348: .Fl W Ns Cm warning
                    349: was specified.
                    350: .It 3
                    351: At least one parsing error occurred, but no fatal error, and
                    352: .Fl W Ns Cm error
                    353: or
                    354: .Fl W Ns Cm warning
                    355: was specified.
                    356: .It 4
                    357: A fatal parsing error occurred.
                    358: .It 5
                    359: Invalid command line arguments were specified.
                    360: No input files have been read.
                    361: .It 6
                    362: An operating system error occurred, for example memory exhaustion or an
                    363: error accessing input files.
                    364: Such errors cause
                    365: .Nm
                    366: to exit at once, possibly in the middle of parsing or formatting a file.
                    367: .El
                    368: .Pp
                    369: Note that selecting
                    370: .Fl T Ns Cm lint
                    371: output mode implies
                    372: .Fl W Ns Cm warning .
1.1       kristaps  373: .Sh EXAMPLES
1.13      kristaps  374: To page manuals to the terminal:
1.1       kristaps  375: .Pp
1.82      kristaps  376: .Dl $ mandoc \-Wall,stop mandoc.1 2\*(Gt&1 | less
                    377: .Dl $ mandoc mandoc.1 mdoc.3 mdoc.7 | less
1.28      kristaps  378: .Pp
1.41      kristaps  379: To produce HTML manuals with
                    380: .Ar style.css
                    381: as the style-sheet:
1.38      kristaps  382: .Pp
1.82      kristaps  383: .Dl $ mandoc \-Thtml -Ostyle=style.css mdoc.7 \*(Gt mdoc.7.html
1.38      kristaps  384: .Pp
1.28      kristaps  385: To check over a large set of manuals:
                    386: .Pp
1.77      schwarze  387: .Dl $ mandoc \-Tlint `find /usr/src -name \e*\e.[1-9]`
1.66      kristaps  388: .Pp
                    389: To produce a series of PostScript manuals for A4 paper:
                    390: .Pp
1.82      kristaps  391: .Dl $ mandoc \-Tps \-Opaper=a4 mdoc.7 man.7 \*(Gt manuals.ps
1.77      schwarze  392: .Sh DIAGNOSTICS
                    393: Standard error messages reporting parsing errors are prefixed by
                    394: .Pp
                    395: .Sm off
                    396: .D1 Ar file : line : column : \ level :
                    397: .Sm on
                    398: .Pp
                    399: where the fields have the following meanings:
                    400: .Bl -tag -width "column"
                    401: .It Ar file
                    402: The name of the input file causing the message.
                    403: .It Ar line
                    404: The line number in that input file.
                    405: Line numbering starts at 1.
                    406: .It Ar column
                    407: The column number in that input file.
                    408: Column numbering starts at 1.
                    409: If the issue is caused by a word, the column number usually
                    410: points to the first character of the word.
                    411: .It Ar level
                    412: The message level, printed in capital letters.
                    413: .El
                    414: .Pp
                    415: Message levels have the following meanings:
                    416: .Bl -tag -width "warning"
                    417: .It Cm fatal
                    418: The parser is unable to parse a given input file at all.
                    419: No formatted output is produced from that input file.
                    420: .It Cm error
                    421: An input file contains syntax that cannot be safely interpreted,
                    422: either because it is invalid or because
                    423: .Nm
                    424: does not implement it yet.
                    425: By discarding part of the input or inserting missing tokens,
                    426: the parser is able to continue, and the error does not prevent
                    427: generation of formatted output, but typically, preparing that
                    428: output involves information loss, broken document structure
                    429: or unintended formatting.
                    430: .It Cm warning
                    431: An input file uses obsolete, discouraged or non-portable syntax.
                    432: All the same, the meaning of the input is unambiguous and a correct
                    433: rendering can be produced.
                    434: Documents causing warnings may render poorly when using other
                    435: formatting tools instead of
                    436: .Nm .
                    437: .El
                    438: .Pp
                    439: Messages of the
                    440: .Cm warning
                    441: and
                    442: .Cm error
                    443: levels are hidden unless their level, or a lower level, is requested using a
                    444: .Fl W
                    445: option or
                    446: .Fl T Ns Cm lint
                    447: output mode.
                    448: .Pp
                    449: The
                    450: .Nm
                    451: utility may also print messages related to invalid command line arguments
                    452: or operating system errors, for example when memory is exhausted or
1.78      schwarze  453: input files cannot be read.
                    454: Such messages do not carry the prefix described above.
1.20      kristaps  455: .Sh COMPATIBILITY
1.26      kristaps  456: This section summarises
1.20      kristaps  457: .Nm
1.76      kristaps  458: compatibility with GNU troff.
1.32      kristaps  459: Each input and output format is separately noted.
1.48      kristaps  460: .Ss ASCII Compatibility
1.37      kristaps  461: .Bl -bullet -compact
1.29      kristaps  462: .It
1.49      kristaps  463: The
1.33      kristaps  464: .Sq \&Bd \-literal
1.49      kristaps  465: and
1.32      kristaps  466: .Sq \&Bd \-unfilled
                    467: macros of
                    468: .Xr mdoc 7
                    469: in
1.58      kristaps  470: .Fl T Ns Cm ascii
1.32      kristaps  471: are synonyms, as are \-filled and \-ragged.
1.26      kristaps  472: .It
1.76      kristaps  473: In GNU troff, the
1.27      kristaps  474: .Sq \&Pa
1.32      kristaps  475: .Xr mdoc 7
                    476: macro does not underline when scoped under an
1.30      kristaps  477: .Sq \&It
1.57      kristaps  478: in the FILES section.
                    479: This behaves correctly in
1.27      kristaps  480: .Nm .
                    481: .It
1.58      kristaps  482: A list or display following the
1.27      kristaps  483: .Sq \&Ss
1.32      kristaps  484: .Xr mdoc 7
                    485: macro in
1.58      kristaps  486: .Fl T Ns Cm ascii
1.20      kristaps  487: does not assert a prior vertical break, just as it doesn't with
1.27      kristaps  488: .Sq \&Sh .
1.20      kristaps  489: .It
1.32      kristaps  490: The
                    491: .Sq \&na
                    492: .Xr man 7
1.34      kristaps  493: macro in
1.58      kristaps  494: .Fl T Ns Cm ascii
1.34      kristaps  495: has no effect.
1.20      kristaps  496: .It
                    497: Words aren't hyphenated.
1.32      kristaps  498: .It
                    499: Sentences are unilaterally monospaced.
1.20      kristaps  500: .El
1.50      kristaps  501: .Ss HTML/XHTML Compatibility
1.42      kristaps  502: .Bl -bullet -compact
                    503: .It
                    504: The
1.47      kristaps  505: .Sq \efP
                    506: escape will revert the font to the previous
                    507: .Sq \ef
                    508: escape, not to the last rendered decoration, which is now dictated by
1.57      kristaps  509: CSS instead of hard-coded.
                    510: It also will not span past the current scope,
                    511: for the same reason.
                    512: Note that in
1.47      kristaps  513: .Sx ASCII Output
                    514: mode, this will work fine.
                    515: .It
                    516: The
1.42      kristaps  517: .Xr mdoc 7
                    518: .Sq \&Bl \-hang
                    519: and
                    520: .Sq \&Bl \-tag
                    521: list types render similarly (no break following overreached left-hand
                    522: side) due to the expressive constraints of HTML.
                    523: .It
                    524: The
                    525: .Xr man 7
                    526: .Sq IP
                    527: and
                    528: .Sq TP
                    529: lists render similarly.
                    530: .El
1.1       kristaps  531: .Sh SEE ALSO
1.57      kristaps  532: .Xr man 7 ,
1.13      kristaps  533: .Xr mandoc_char 7 ,
1.57      kristaps  534: .Xr mdoc 7
1.1       kristaps  535: .Sh AUTHORS
                    536: The
                    537: .Nm
1.26      kristaps  538: utility was written by
1.59      kristaps  539: .An Kristaps Dzonsons Aq kristaps@bsd.lv .
1.39      kristaps  540: .Sh CAVEATS
                    541: In
1.58      kristaps  542: .Fl T Ns Cm html
1.50      kristaps  543: and
1.58      kristaps  544: .Fl T Ns Cm xhtml ,
1.39      kristaps  545: the maximum size of an element attribute is determined by
                    546: .Dv BUFSIZ ,
1.57      kristaps  547: which is usually 1024 bytes.
                    548: Be aware of this when setting long link
1.58      kristaps  549: formats such as
                    550: .Fl O Ns Cm style Ns = Ns Ar really/long/link .
1.51      kristaps  551: .Pp
                    552: Nesting elements within next-line element scopes of
1.58      kristaps  553: .Fl m Ns Cm an ,
1.51      kristaps  554: such as
                    555: .Sq br
                    556: within an empty
                    557: .Sq B ,
                    558: will confuse
1.58      kristaps  559: .Fl T Ns Cm html
1.51      kristaps  560: and
1.58      kristaps  561: .Fl T Ns Cm xhtml
1.52      kristaps  562: and cause them to forget the formatting of the prior next-line scope.
1.53      kristaps  563: .Pp
1.54      kristaps  564: The
                    565: .Sq \(aq
1.55      kristaps  566: control character is an alias for the standard macro control character
                    567: and does not emit a line-break as stipulated in GNU troff.

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