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Diff for /mandoc/mdoc.7 between version 1.243 and 1.256

version 1.243, 2014/11/28 18:09:01 version 1.256, 2015/10/11 18:56:51
Line 433  in the alphabetical
Line 433  in the alphabetical
 .Ss Document preamble and NAME section macros  .Ss Document preamble and NAME section macros
 .Bl -column "Brq, Bro, Brc" description  .Bl -column "Brq, Bro, Brc" description
 .It Sx \&Dd Ta document date: Cm $\&Mdocdate$ | Ar month day , year  .It Sx \&Dd Ta document date: Cm $\&Mdocdate$ | Ar month day , year
 .It Sx \&Dt Ta document title: Ar TITLE section Op Ar volume | arch  .It Sx \&Dt Ta document title: Ar TITLE section Op Ar arch
 .It Sx \&Os Ta operating system version: Op Ar system Op Ar version  .It Sx \&Os Ta operating system version: Op Ar system Op Ar version
 .It Sx \&Nm Ta document name (one argument)  .It Sx \&Nm Ta document name (one argument)
 .It Sx \&Nd Ta document description (one line)  .It Sx \&Nd Ta document description (one line)
Line 454  in the alphabetical
Line 454  in the alphabetical
 .Op Fl compact  .Op Fl compact
 .It Sx \&D1 Ta indented display (one line)  .It Sx \&D1 Ta indented display (one line)
 .It Sx \&Dl Ta indented literal display (one line)  .It Sx \&Dl Ta indented literal display (one line)
   .It Sx \&Ql Ta in-line literal display: Ql text
 .It Sx \&Bl , \&El Ta list block:  .It Sx \&Bl , \&El Ta list block:
 .Fl Ar type  .Fl Ar type
 .Op Fl width Ar val  .Op Fl width Ar val
Line 528  in the alphabetical
Line 529  in the alphabetical
 .It Sx \&Dq , \&Do , \&Dc Ta enclose in typographic double quotes: Dq text  .It Sx \&Dq , \&Do , \&Dc Ta enclose in typographic double quotes: Dq text
 .It Sx \&Qq , \&Qo , \&Qc Ta enclose in typewriter double quotes: Qq text  .It Sx \&Qq , \&Qo , \&Qc Ta enclose in typewriter double quotes: Qq text
 .It Sx \&Sq , \&So , \&Sc Ta enclose in single quotes: Sq text  .It Sx \&Sq , \&So , \&Sc Ta enclose in single quotes: Sq text
 .It Sx \&Ql Ta single-quoted literal text: Ql text  
 .It Sx \&Pq , \&Po , \&Pc Ta enclose in parentheses: Pq text  .It Sx \&Pq , \&Po , \&Pc Ta enclose in parentheses: Pq text
 .It Sx \&Bq , \&Bo , \&Bc Ta enclose in square brackets: Bq text  .It Sx \&Bq , \&Bo , \&Bc Ta enclose in square brackets: Bq text
 .It Sx \&Brq , \&Bro , \&Brc Ta enclose in curly braces: Brq text  .It Sx \&Brq , \&Bro , \&Brc Ta enclose in curly braces: Brq text
Line 777  The
Line 777  The
 must be one of the following:  must be one of the following:
 .Bl -tag -width 13n -offset indent  .Bl -tag -width 13n -offset indent
 .It Fl centered  .It Fl centered
 Produce one output line from each input line, and centre-justify each line.  Produce one output line from each input line, and center-justify each line.
 Using this display type is not recommended; many  Using this display type is not recommended; many
 .Nm  .Nm
 implementations render it poorly.  implementations render it poorly.
Line 822  which has no effect;
Line 822  which has no effect;
 .Cm right ,  .Cm right ,
 which justifies to the right margin; or  which justifies to the right margin; or
 .Cm center ,  .Cm center ,
 which aligns around an imagined centre axis.  which aligns around an imagined center axis.
 .It  .It
 A macro invocation, which selects a predefined width  A macro invocation, which selects a predefined width
 associated with that macro.  associated with that macro.
Line 1256  Examples:
Line 1256  Examples:
 .Dl \&.Dl % mandoc mdoc.7 \e(ba less  .Dl \&.Dl % mandoc mdoc.7 \e(ba less
 .Pp  .Pp
 See also  See also
   .Sx \&Ql ,
 .Sx \&Bd  .Sx \&Bd
   .Fl literal ,
 and  and
 .Sx \&D1 .  .Sx \&D1 .
 .Ss \&Do  .Ss \&Do
Line 1299  Its syntax is as follows:
Line 1301  Its syntax is as follows:
 .Pf \. Sx \&Dt  .Pf \. Sx \&Dt
 .Ar TITLE  .Ar TITLE
 .Ar section  .Ar section
 .Op Ar volume | arch  .Op Ar arch
 .Ed  .Ed
 .Pp  .Pp
 Its arguments are as follows:  Its arguments are as follows:
Line 1314  it should by convention be all caps.
Line 1316  it should by convention be all caps.
 The manual section.  The manual section.
 This may be one of  This may be one of
 .Cm 1  .Cm 1
 .Pq utilities ,  .Pq General Commands ,
 .Cm 2  .Cm 2
 .Pq system calls ,  .Pq System Calls ,
 .Cm 3  .Cm 3
 .Pq libraries ,  .Pq Library Functions ,
 .Cm 3p  .Cm 3p
 .Pq Perl libraries ,  .Pq Perl Library ,
 .Cm 4  .Cm 4
 .Pq devices ,  .Pq Device Drivers ,
 .Cm 5  .Cm 5
 .Pq file formats ,  .Pq File Formats ,
 .Cm 6  .Cm 6
 .Pq games ,  .Pq Games ,
 .Cm 7  .Cm 7
 .Pq miscellaneous ,  .Pq Miscellaneous Information ,
 .Cm 8  .Cm 8
 .Pq system utilities ,  .Pq System Manager's Manual ,
 .Cm 9  
 .Pq kernel functions ,  
 .Cm X11  
 .Pq X Window System ,  
 .Cm X11R6  
 .Pq X Window System ,  
 .Cm unass  
 .Pq unassociated ,  
 .Cm local  
 .Pq local system ,  
 .Cm draft  
 .Pq draft manual ,  
 or  or
 .Cm paper  .Cm 9
 .Pq paper .  .Pq Kernel Developer's Manual .
 It should correspond to the manual's filename suffix and defaults to  It should correspond to the manual's filename suffix and defaults to
 the empty string if unspecified.  the empty string if unspecified.
 .It Ar volume  
 This overrides the volume inferred from  
 .Ar section .  
 This field is optional, and if specified, must be one of  
 .Cm USD  
 .Pq users' supplementary documents ,  
 .Cm PS1  
 .Pq programmers' supplementary documents ,  
 .Cm AMD  
 .Pq administrators' supplementary documents ,  
 .Cm SMM  
 .Pq system managers' manuals ,  
 .Cm URM  
 .Pq users' reference manuals ,  
 .Cm PRM  
 .Pq programmers' reference manuals ,  
 .Cm KM  
 .Pq kernel manuals ,  
 .Cm IND  
 .Pq master index ,  
 .Cm MMI  
 .Pq master index ,  
 .Cm LOCAL  
 .Pq local manuals ,  
 .Cm LOC  
 .Pq local manuals ,  
 or  
 .Cm CON  
 .Pq contributed manuals .  
 .It Ar arch  .It Ar arch
 This specifies the machine architecture a manual page applies to,  This specifies the machine architecture a manual page applies to,
 where relevant, for example  where relevant, for example
Line 1390  The list of valid architectures varies by operating sy
Line 1351  The list of valid architectures varies by operating sy
 .Pp  .Pp
 Examples:  Examples:
 .Dl \&.Dt FOO 1  .Dl \&.Dt FOO 1
 .Dl \&.Dt FOO 4 KM  
 .Dl \&.Dt FOO 9 i386  .Dl \&.Dt FOO 9 i386
 .Pp  .Pp
 See also  See also
Line 1662  See also
Line 1622  See also
 A function name.  A function name.
 Its syntax is as follows:  Its syntax is as follows:
 .Bd -ragged -offset indent  .Bd -ragged -offset indent
 .Pf \. Ns Sx \&Fn  .Pf . Sx \&Fn
 .Op Ar functype  .Op Ar functype
 .Ar funcname  .Ar funcname
 .Op Oo Ar argtype Oc Ar argname  .Op Oo Ar argtype Oc Ar argname
Line 1798  is preferred for displaying code; the
Line 1758  is preferred for displaying code; the
 .Sx \&Ic  .Sx \&Ic
 macro is used when referring to specific instructions.  macro is used when referring to specific instructions.
 .Ss \&In  .Ss \&In
 An  The name of an include file.
 .Dq include  This macro is most often used in section 2, 3, and 9 manual pages.
 file.  .Pp
 When invoked as the first macro on an input line in the  When invoked as the first macro on an input line in the
 .Em SYNOPSIS  .Em SYNOPSIS
 section, the argument is displayed in angle brackets  section, the argument is displayed in angle brackets
 and preceded by  and preceded by
 .Dq #include ,  .Qq #include ,
 and a blank line is inserted in front if there is a preceding  and a blank line is inserted in front if there is a preceding
 function declaration.  function declaration.
 This is most often used in section 2, 3, and 9 manual pages.  In other sections, it only encloses its argument in angle brackets
   and causes no line break.
 .Pp  .Pp
 Examples:  Examples:
 .Dl \&.In sys/types.h  .Dl \&.In sys/types.h
Line 1969  Examples:
Line 1930  Examples:
 .Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv  .Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv
 .Ss \&Nd  .Ss \&Nd
 A one line description of the manual's content.  A one line description of the manual's content.
 This may only be invoked in the  This is the mandatory last macro of the
 .Em SYNOPSIS  .Em NAME
 section subsequent the  section and not appropriate for other sections.
 .Sx \&Nm  
 macro.  
 .Pp  .Pp
 Examples:  Examples:
 .Dl Pf . Sx \&Nd mdoc language reference  .Dl Pf . Sx \&Nd mdoc language reference
Line 2130  Its syntax is as follows:
Line 2089  Its syntax is as follows:
 The optional  The optional
 .Ar system  .Ar system
 parameter specifies the relevant operating system or environment.  parameter specifies the relevant operating system or environment.
 Left unspecified, it defaults to the local operating system version.  It is suggested to leave it unspecified, in which case
 This is the suggested form.  .Xr mandoc 1
   uses its
   .Fl Ios
   argument or, if that isn't specified either,
   .Fa sysname
   and
   .Fa release
   as returned by
   .Xr uname 3 .
 .Pp  .Pp
 Examples:  Examples:
 .Dl \&.Os  .Dl \&.Os
Line 2188  See also
Line 2155  See also
 Close parenthesised context opened by  Close parenthesised context opened by
 .Sx \&Po .  .Sx \&Po .
 .Ss \&Pf  .Ss \&Pf
 Removes the space between its argument  Removes the space between its argument and the following macro.
 .Pq Dq prefix  
 and the following macro.  
 Its syntax is as follows:  Its syntax is as follows:
 .Pp  .Pp
 .D1 .Pf Ar prefix macro arguments ...  .D1 .Pf Ar prefix macro arguments ...
 .Pp  .Pp
 This is equivalent to:  This is equivalent to:
 .Pp  .Pp
 .D1 .No Ar prefix No \&Ns Ar macro arguments ...  .D1 .No \e& Ns Ar prefix No \&Ns Ar macro arguments ...
 .Pp  .Pp
   The
   .Ar prefix
   argument is not parsed for macro names or delimiters,
   but used verbatim as if it were escaped.
   .Pp
 Examples:  Examples:
 .Dl ".Pf $ Ar variable_name"  .Dl ".Pf $ Ar variable_name"
   .Dl ".Pf . Ar macro_name"
 .Dl ".Pf 0x Ar hex_digits"  .Dl ".Pf 0x Ar hex_digits"
 .Pp  .Pp
 See also  See also
Line 2235  See also
Line 2206  See also
 Close quoted context opened by  Close quoted context opened by
 .Sx \&Qo .  .Sx \&Qo .
 .Ss \&Ql  .Ss \&Ql
 Format a single-quoted literal.  In-line literal display.
   This can for example be used for complete command invocations and
   for multi-word code fragments when more specific markup is not
   appropriate and an indented display is not desired.
   While
   .Xr mandoc 1
   always encloses the arguments in single quotes, other formatters
   usually omit the quotes on non-terminal output devices when the
   arguments have three or more characters.
   .Pp
 See also  See also
 .Sx \&Qq  .Sx \&Dl
 and  and
 .Sx \&Sq .  .Sx \&Bd
   .Fl literal .
 .Ss \&Qo  .Ss \&Qo
 Multi-line version of  Multi-line version of
 .Sx \&Qq .  .Sx \&Qq .
Line 2290  Examples:
Line 2271  Examples:
 \&.%A J. D. Ullman  \&.%A J. D. Ullman
 \&.%B Introduction to Automata Theory, Languages, and Computation  \&.%B Introduction to Automata Theory, Languages, and Computation
 \&.%I Addison-Wesley  \&.%I Addison-Wesley
 \&.%C Reading, Massachusettes  \&.%C Reading, Massachusetts
 \&.%D 1979  \&.%D 1979
 \&.Re  \&.Re
 .Ed  .Ed
Line 2426  The original C standard.
Line 2407  The original C standard.
 .Pp  .Pp
 .It \-isoC-99  .It \-isoC-99
 .St -isoC-99  .St -isoC-99
 .It \-ansiC-99  
 .St -ansiC-99  
 .br  .br
 The second major version of the C language standard.  The second major version of the C language standard.
 .Pp  .Pp
Line 2527  The following three refer to parts of it.
Line 2506  The following three refer to parts of it.
 .br  .br
 Networking APIs, including sockets.  Networking APIs, including sockets.
 .Pp  .Pp
 .It \-xpg4.3  
 .St -xpg4.3  
 .Pp  
 .It \-svid4  .It \-svid4
 .St -svid4 ,  .St -svid4 ,
 .br  .br
Line 2559  The following refer to parts of it.
Line 2535  The following refer to parts of it.
 .It \-xns5.2  .It \-xns5.2
 .St -xns5.2  .St -xns5.2
 .El  .El
 .It Single UNIX Specification version 3 and related standards  .It Single UNIX Specification version 3
 .Pp  .Pp
 .Bl -tag -width "-p1003.1g-2000X" -compact  .Bl -tag -width "-p1003.1-2001" -compact
 .It \-p1003.1d-99  
 .St -p1003.1d-99  
 .br  
 Additional real-time extensions.  
 .Pp  
 .It \-p1003.1-2001  .It \-p1003.1-2001
 .St -p1003.1-2001  .St -p1003.1-2001
 .It \-susv3  .It \-susv3
Line 3165  Manually switching the font using the
Line 3136  Manually switching the font using the
 font escape sequences is never required.  font escape sequences is never required.
 .Sh COMPATIBILITY  .Sh COMPATIBILITY
 This section provides an incomplete list of compatibility issues  This section provides an incomplete list of compatibility issues
 between mandoc and other troff implementations, at this time limited  between mandoc and GNU troff
 to GNU troff  
 .Pq Qq groff .  .Pq Qq groff .
 The term  
 .Qq historic groff  
 refers to groff versions before 1.17,  
 which featured a significant update of the  
 .Pa doc.tmac  
 file.  
 .Pp  .Pp
 Heirloom troff, the other significant troff implementation accepting  
 \-mdoc, is similar to historic groff.  
 .Pp  
 The following problematic behaviour is found in groff:  The following problematic behaviour is found in groff:
 .ds hist (Historic groff only.)  
 .Pp  .Pp
 .Bl -dash -compact  .Bl -dash -compact
 .It  .It
 Display macros  
 .Po  
 .Sx \&Bd ,  
 .Sx \&Dl ,  
 and  
 .Sx \&D1  
 .Pc  
 may not be nested.  
 \*[hist]  
 .It  
 .Sx \&At  
 with unknown arguments produces no output at all.  
 \*[hist]  
 Newer groff and mandoc print  
 .Qq AT&T UNIX  
 and the arguments.  
 .It  
 .Sx \&Bl Fl column  
 does not recognise trailing punctuation characters when they immediately  
 precede tabulator characters, but treats them as normal text and  
 outputs a space before them.  
 .It  
 .Sx \&Bd Fl ragged compact  
 does not start a new line.  
 \*[hist]  
 .It  
 .Sx \&Dd  .Sx \&Dd
 with non-standard arguments behaves very strangely.  with non-standard arguments behaves very strangely.
 When there are three arguments, they are printed verbatim.  When there are three arguments, they are printed verbatim.
Line 3217  but without any arguments the string
Line 3151  but without any arguments the string
 .Dq Epoch  .Dq Epoch
 is printed.  is printed.
 .It  .It
 .Sx \&Fl  
 does not print a dash for an empty argument.  
 \*[hist]  
 .It  
 .Sx \&Fn  
 does not start a new line unless invoked as the line macro in the  
 .Em SYNOPSIS  
 section.  
 \*[hist]  
 .It  
 .Sx \&Fo  
 with  
 .Pf non- Sx \&Fa  
 children causes inconsistent spacing between arguments.  
 In mandoc, a single space is always inserted between arguments.  
 .It  
 .Sx \&Ft  
 in the  
 .Em SYNOPSIS  
 causes inconsistent vertical spacing, depending on whether a prior  
 .Sx \&Fn  
 has been invoked.  
 See  
 .Sx \&Ft  
 and  
 .Sx \&Fn  
 for the normalised behaviour in mandoc.  
 .It  
 .Sx \&In  
 ignores additional arguments and is not treated specially in the  
 .Em SYNOPSIS .  
 \*[hist]  
 .It  
 .Sx \&It  
 sometimes requires a  
 .Fl nested  
 flag.  
 \*[hist]  
 In new groff and mandoc, any list may be nested by default and  
 .Fl enum  
 lists will restart the sequence only for the sub-list.  
 .It  
 .Sx \&Li  
 followed by a delimiter is incorrectly used in some manuals  
 instead of properly quoting that character, which sometimes works with  
 historic groff.  
 .It  
 .Sx \&Lk  .Sx \&Lk
 only accepts a single link-name argument; the remainder is misformatted.  only accepts a single link-name argument; the remainder is misformatted.
 .It  .It
Line 3277  can only be called by other macros, but not at the beg
Line 3164  can only be called by other macros, but not at the beg
 .Sx \&%C  .Sx \&%C
 is not implemented (up to and including groff-1.22.2).  is not implemented (up to and including groff-1.22.2).
 .It  .It
 Historic groff only allows up to eight or nine arguments per macro input  
 line, depending on the exact situation.  
 Providing more arguments causes garbled output.  
 The number of arguments on one input line is not limited with mandoc.  
 .It  
 Historic groff has many un-callable macros.  
 Most of these (excluding some block-level macros) are callable  
 in new groff and mandoc.  
 .It  
 .Sq \(ba  
 (vertical bar) is not fully supported as a delimiter.  
 \*[hist]  
 .It  
 .Sq \ef  .Sq \ef
 .Pq font face  .Pq font face
 and  and
Line 3307  The following features are unimplemented in mandoc:
Line 3181  The following features are unimplemented in mandoc:
 .Bl -dash -compact  .Bl -dash -compact
 .It  .It
 .Sx \&Bd  .Sx \&Bd
 .Fl file Ar file .  .Fl file Ar file
   is unsupported for security reasons.
 .It  .It
 .Sx \&Bd  .Sx \&Bd
   .Fl filled
   does not adjust the right margin, but is an alias for
   .Sx \&Bd
   .Fl ragged .
   .It
   .Sx \&Bd
   .Fl literal
   does not use a literal font, but is an alias for
   .Sx \&Bd
   .Fl unfilled .
   .It
   .Sx \&Bd
 .Fl offset Cm center  .Fl offset Cm center
 and  and
 .Fl offset Cm right .  .Fl offset Cm right
 Groff does not implement centred and flush-right rendering either,  don't work.
   Groff does not implement centered and flush-right rendering either,
 but produces large indentations.  but produces large indentations.
 .El  .El
 .Sh SEE ALSO  .Sh SEE ALSO

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Removed from v.1.243  
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  Added in v.1.256

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