version 1.186, 2011/04/17 11:57:07 |
version 1.194, 2011/08/01 07:45:11 |
Line 97 Within a macro line, the following terms are reserved: |
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Line 97 Within a macro line, the following terms are reserved: |
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.Pq reserved-word vertical bar |
.Pq reserved-word vertical bar |
.El |
.El |
.Pp |
.Pp |
Use of reserved terms is described in |
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.Sx MACRO SYNTAX . |
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For general use in macro lines, these can be escaped with a non-breaking |
For general use in macro lines, these can be escaped with a non-breaking |
space |
space |
.Pq Sq \e& . |
.Pq Sq \e& . |
Line 180 trailing spaces are stripped from input (unless in a l |
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Line 178 trailing spaces are stripped from input (unless in a l |
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Blank text lines, which may include whitespace, are only permitted |
Blank text lines, which may include whitespace, are only permitted |
within literal contexts. |
within literal contexts. |
.Pp |
.Pp |
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In general, trailing whitespace on input lines is discouraged |
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for reasons of clarity and portability. |
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In the rare case that a blank character is needed at the end of an |
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input line, it may be forced by |
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.Sq \e\ \e& . |
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.Pp |
In macro lines, whitespace delimits arguments and is discarded. |
In macro lines, whitespace delimits arguments and is discarded. |
If arguments are quoted, whitespace within the quotes is retained. |
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.Ss Quotation |
.Ss Quotation |
Macro arguments may be quoted with double-quotes to group |
Macro arguments may be quoted with double-quotes; in this case, |
space-delimited terms or to retain blocks of whitespace. |
whitespace within the quotes is retained as part of the argument. |
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For example, |
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.Pp |
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.D1 Pf \. \&Fn strlen "\(dqconst char *s\(dq" |
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.Pp |
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renders as |
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.Sq Fn strlen "const char *s" , |
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while |
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.Pp |
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.D1 Pf \. \&Fn strlen "const char *s" |
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.Pp |
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would produce |
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.Sq Fn strlen const char *s . |
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.Pp |
A quoted argument begins with a double-quote preceded by whitespace. |
A quoted argument begins with a double-quote preceded by whitespace. |
The next double-quote not pairwise adjacent to another double-quote |
The next double-quote not pairwise adjacent to another double-quote |
terminates the literal, regardless of surrounding whitespace. |
terminates the literal, regardless of surrounding whitespace. |
.Pp |
.Pp |
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In unquoted arguments, space characters can alternatively be included |
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by preceding them with a backslash |
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.Pq Sq \e\~ , |
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but quoting is usually better for clarity. |
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.Pp |
Note that any quoted text, even if it would cause a macro invocation |
Note that any quoted text, even if it would cause a macro invocation |
when unquoted, is considered literal text. |
when unquoted, is considered literal text. |
Thus, the following produces |
Thus, the following produces |
Line 298 sections, although this varies between manual sections |
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Line 319 sections, although this varies between manual sections |
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.Pp |
.Pp |
The following is a well-formed skeleton |
The following is a well-formed skeleton |
.Nm |
.Nm |
file: |
file for a utility |
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.Qq progname : |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Dd $\&Mdocdate$ |
\&.Dd $\&Mdocdate$ |
\&.Dt mdoc 7 |
\&.Dt PROGNAME section |
\&.Os |
\&.Os |
\&.Sh NAME |
\&.Sh NAME |
\&.Nm foo |
\&.Nm progname |
\&.Nd a description goes here |
\&.Nd one line about what it does |
\&.\e\*q .Sh LIBRARY |
\&.\e\*q .Sh LIBRARY |
\&.\e\*q For sections 2, 3, & 9 only. |
\&.\e\*q For sections 2, 3, & 9 only. |
\&.\e\*q Not used in OpenBSD. |
\&.\e\*q Not used in OpenBSD. |
\&.Sh SYNOPSIS |
\&.Sh SYNOPSIS |
\&.Nm foo |
\&.Nm progname |
\&.Op Fl options |
\&.Op Fl options |
\&.Ar |
\&.Ar |
\&.Sh DESCRIPTION |
\&.Sh DESCRIPTION |
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.Em Callable |
.Em Callable |
column indicates that the macro may also be called by passing its name |
column indicates that the macro may also be called by passing its name |
as an argument to another macro. |
as an argument to another macro. |
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For example, |
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.Sq \&.Op \&Fl O \&Ar file |
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produces |
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.Sq Op Fl O Ar file . |
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To prevent a macro call and render the macro name literally, |
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escape it by prepending a non-breaking space, |
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.Sq \e& . |
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For example, |
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.Sq \&Op \e&Fl O |
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produces |
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.Sq Op \&Fl O . |
If a macro is not callable but its name appears as an argument |
If a macro is not callable but its name appears as an argument |
to another macro, it is interpreted as opaque text. |
to another macro, it is interpreted as opaque text. |
For example, |
For example, |
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.Em SYNOPSIS |
.Em SYNOPSIS |
section line, else it is |
section line, else it is |
.Sx In-line . |
.Sx In-line . |
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.Ss Special block macro |
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The |
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.Sx \&Ta |
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macro can only be used below |
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.Sx \&It |
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in |
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.Sx \&Bl Fl column |
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lists. |
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It delimits blocks representing table cells; |
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these blocks have bodies, but no heads. |
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.Pp |
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.Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXX" -compact -offset indent |
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.It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope |
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.It Sx \&Ta Ta Yes Ta Yes Ta closed by Sx \&Ta , Sx \&It |
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.El |
.Ss In-line |
.Ss In-line |
Closed by |
Closed by |
.Sx Reserved Terms , |
.Sx Reserved Terms , |
Line 1024 Accepts one optional argument: |
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Line 1072 Accepts one optional argument: |
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.It Cm v[1-7] | 32v |
.It Cm v[1-7] | 32v |
A version of |
A version of |
.At . |
.At . |
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.It Cm III |
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.At III . |
.It Cm V[.[1-4]]? |
.It Cm V[.[1-4]]? |
A version of |
A version of |
.At V . |
.At V . |
Line 1033 Note that these arguments do not begin with a hyphen. |
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Line 1083 Note that these arguments do not begin with a hyphen. |
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.Pp |
.Pp |
Examples: |
Examples: |
.Dl \&.At |
.Dl \&.At |
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.Dl \&.At III |
.Dl \&.At V.1 |
.Dl \&.At V.1 |
.Pp |
.Pp |
See also |
See also |
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and |
and |
.Sx \&Os . |
.Sx \&Os . |
.Ss \&Dv |
.Ss \&Dv |
Defined variables such as preprocessor constants. |
Defined variables such as preprocessor constants, constant symbols, |
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enumeration values, and so on. |
.Pp |
.Pp |
Examples: |
Examples: |
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.Dl \&.Dv NULL |
.Dl \&.Dv BUFSIZ |
.Dl \&.Dv BUFSIZ |
.Dl \&.Dv STDOUT_FILENO |
.Dl \&.Dv STDOUT_FILENO |
.Pp |
.Pp |
See also |
See also |
.Sx \&Er . |
.Sx \&Er |
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and |
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.Sx \&Ev |
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for special-purpose constants and |
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.Sx \&Va |
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for variable symbols. |
.Ss \&Dx |
.Ss \&Dx |
Format the DragonFly BSD version provided as an argument, or a default |
Format the DragonFly BSD version provided as an argument, or a default |
value if no argument is provided. |
value if no argument is provided. |
Line 1775 argument is used as the enclosure head, for example, s |
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Line 1833 argument is used as the enclosure head, for example, s |
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will emulate |
will emulate |
.Sx \&Do . |
.Sx \&Do . |
.Ss \&Er |
.Ss \&Er |
Display error constants. |
Error constants for definitions of the |
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.Va errno |
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libc global variable. |
.Pp |
.Pp |
Examples: |
Examples: |
.Dl \&.Er EPERM |
.Dl \&.Er EPERM |
.Dl \&.Er ENOENT |
.Dl \&.Er ENOENT |
.Pp |
.Pp |
See also |
See also |
.Sx \&Dv . |
.Sx \&Dv |
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for general constants. |
.Ss \&Es |
.Ss \&Es |
This macro is obsolete and not implemented. |
This macro is obsolete and not implemented. |
.Ss \&Ev |
.Ss \&Ev |
Line 1792 Environmental variables such as those specified in |
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Line 1853 Environmental variables such as those specified in |
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Examples: |
Examples: |
.Dl \&.Ev DISPLAY |
.Dl \&.Ev DISPLAY |
.Dl \&.Ev PATH |
.Dl \&.Ev PATH |
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.Pp |
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See also |
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.Sx \&Dv |
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for general constants. |
.Ss \&Ex |
.Ss \&Ex |
Insert a standard sentence regarding exit values. |
Insert a standard sentence regarding command exit values of 0 on success |
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and >0 on failure. |
Its syntax is as follows: |
Its syntax is as follows: |
.Pp |
.Pp |
.D1 Pf \. Sx \&Ex Fl std Op Ar utility |
.D1 Pf \. Sx \&Ex Fl std Op Ar utility ... |
.Pp |
.Pp |
When |
If |
.Ar utility |
.Ar utility |
is not specified, the document's name set by |
is not specified, the document's name set by |
.Sx \&Nm |
.Sx \&Nm |
is used. |
is used. |
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Multiple |
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.Ar utility |
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arguments are treated as separate utilities. |
.Pp |
.Pp |
See also |
See also |
.Sx \&Rv . |
.Sx \&Rv . |
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.Sx \&Fc , |
.Sx \&Fc , |
and |
and |
.Sx \&Ft . |
.Sx \&Ft . |
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.Ss \&Fr |
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This macro is obsolete and not implemented. |
.Ss \&Ft |
.Ss \&Ft |
A function type. |
A function type. |
Its syntax is as follows: |
Its syntax is as follows: |
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list is the most complicated. |
list is the most complicated. |
Its syntax is as follows: |
Its syntax is as follows: |
.Pp |
.Pp |
.D1 Pf \. Sx \&It Op Cm args |
.D1 Pf \. Sx \&It Ar cell Op <TAB> Ar cell ... |
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.D1 Pf \. Sx \&It Ar cell Op Sx \&Ta Ar cell ... |
.Pp |
.Pp |
The |
The arguments consist of one or more lines of text and macros |
.Cm args |
representing a complete table line. |
are phrases, a mix of macros and text corresponding to a line column, |
Cells within the line are delimited by tabs or by the special |
delimited by tabs or the special |
.Sx \&Ta |
.Sq \&Ta |
block macro. |
pseudo-macro. |
The tab cell delimiter may only be used within the |
Lines subsequent the |
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.Sx \&It |
.Sx \&It |
are interpreted within the scope of the last phrase. |
line itself; on following lines, only the |
Calling the pseudo-macro |
.Sx \&Ta |
.Sq \&Ta |
macro can be used to delimit cells, and |
will open a new phrase scope (this must occur on a macro line to be |
.Sx \&Ta |
interpreted as a macro). |
is only recognized as a macro when called by other macros, |
Note that the tab phrase delimiter may only be used within the |
not as the first macro on a line. |
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.Pp |
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Note that quoted strings may span tab-delimited cells on an |
.Sx \&It |
.Sx \&It |
line itself. |
line. |
Subsequent this, only the |
For example, |
.Sq \&Ta |
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pseudo-macro may be used to delimit phrases. |
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Furthermore, note that quoted sections propagate over tab-delimited |
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phrases on an |
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.Sx \&It , |
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for example, |
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.Pp |
.Pp |
.Dl .It \(dqcol1 ; <TAB> col2 ;\(dq \&; |
.Dl .It \(dqcol1 ; <TAB> col2 ;\(dq \&; |
.Pp |
.Pp |
Line 2092 The syntax is as follows: |
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Line 2159 The syntax is as follows: |
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The |
The |
.Ar library |
.Ar library |
parameter may be a system library, such as |
parameter may be a system library, such as |
.Ar libz |
.Cm libz |
or |
or |
.Ar libpam , |
.Cm libpam , |
in which case a small library description is printed next to the linker |
in which case a small library description is printed next to the linker |
invocation; or a custom library, in which case the library name is |
invocation; or a custom library, in which case the library name is |
printed in quotes. |
printed in quotes. |
Line 2436 block is used within a SEE ALSO section, a vertical sp |
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Line 2503 block is used within a SEE ALSO section, a vertical sp |
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before the rendered output, else the block continues on the current |
before the rendered output, else the block continues on the current |
line. |
line. |
.Ss \&Rv |
.Ss \&Rv |
Inserts text regarding a function call's return value. |
Insert a standard sentence regarding a function call's return value of 0 |
This macro must consist of the |
on success and \-1 on error, with the |
.Fl std |
.Va errno |
argument followed by an optional |
libc global variable set on error. |
.Ar function . |
Its syntax is as follows: |
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.Pp |
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.D1 Pf \. Sx \&Rv Fl std Op Ar function ... |
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.Pp |
If |
If |
.Ar function |
.Ar function |
is not provided, the document's name as stipulated by the first |
is not specified, the document's name set by |
.Sx \&Nm |
.Sx \&Nm |
is provided. |
is used. |
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Multiple |
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.Ar function |
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arguments are treated as separate functions. |
.Pp |
.Pp |
See also |
See also |
.Sx \&Ex . |
.Sx \&Ex . |
Line 2474 Its syntax is as follows: |
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Line 2547 Its syntax is as follows: |
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.D1 Pf \. Sx \&Sm Cm on | off |
.D1 Pf \. Sx \&Sm Cm on | off |
.Pp |
.Pp |
By default, spacing is |
By default, spacing is |
.Ar on . |
.Cm on . |
When switched |
When switched |
.Ar off , |
.Cm off , |
no white space is inserted between macro arguments and between the |
no white space is inserted between macro arguments and between the |
output generated from adjacent macros, but text lines |
output generated from adjacent macros, but text lines |
still get normal spacing between words and sentences. |
still get normal spacing between words and sentences. |
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.Sx \&Li , |
.Sx \&Li , |
and |
and |
.Sx \&Em . |
.Sx \&Em . |
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.Ss \&Ta |
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Table cell separator in |
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.Sx \&Bl Fl column |
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lists; can only be used below |
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.Sx \&It . |
.Ss \&Tn |
.Ss \&Tn |
Format a tradename. |
Format a tradename. |
.Pp |
.Pp |
Line 2779 Newer groff and mandoc print |
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Line 2857 Newer groff and mandoc print |
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.Qq AT&T UNIX |
.Qq AT&T UNIX |
and the arguments. |
and the arguments. |
.It |
.It |
.Sx \&Bd Fl column |
.Sx \&Bl Fl column |
does not recognize trailing punctuation characters when they immediately |
does not recognize trailing punctuation characters when they immediately |
precede tabulator characters, but treats them as normal text and |
precede tabulator characters, but treats them as normal text and |
outputs a space before them. |
outputs a space before them. |