Don't let empty strings into the makewhatis keyword database.

[mandoc.git] / mandoc.1

diff --git a/mandoc.1 b/mandoc.1
index ee38ab76ac0b37ef746e7a8052a0b244a2a3d98d..cb7737b4931ed251949c1d4d9485d405902770a2 100644 (file)
--- a/mandoc.1
+++ b/mandoc.1
@@ -1,4 +1,4 @@
-.\"    $Id: mandoc.1,v 1.79 2010/12/15 15:59:23 kristaps Exp $
+.\"    $Id: mandoc.1,v 1.89 2011/05/30 07:24:15 kristaps Exp $
 .\"
 .\" Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: December 15 2010 $
+.Dd $Mdocdate: May 30 2011 $
 .Dt MANDOC 1
 .Os
 .Sh NAME
@@ -27,7 +27,7 @@
 .Op Fl O Ns Ar option
 .Op Fl T Ns Ar output
 .Op Fl W Ns Ar level
-.Op Ar file...
+.Op Ar
 .Sh DESCRIPTION
 The
 .Nm
@@ -158,14 +158,21 @@ utility accepts the following
 .Fl T
 arguments, which correspond to output modes:
 .Bl -tag -width Ds
+.It Fl T Ns Cm utf8
+Encode output in the UTF\-8 multi-byte format.
+See
+.Sx UTF\-8 Output .
+.It Fl T Ns Cm locale
+Encode output using the current locale.
+See
+.Sx Locale Output .
 .It Fl T Ns Cm ascii
-Produce 7-bit ASCII output, backspace-encoded for bold and underline
-styles.
+Produce 7-bit ASCII output.
 This is the default.
 See
 .Sx ASCII Output .
 .It Fl T Ns Cm html
-Produce strict HTML-4.01 output, with a sane default style.
+Produce strict CSS1/HTML-4.01 output.
 See
 .Sx HTML Output .
 .It Fl T Ns Cm lint
@@ -183,13 +190,30 @@ See
 .It Fl T Ns Cm tree
 Produce an indented parse tree.
 .It Fl T Ns Cm xhtml
-Produce strict XHTML-1.0 output, with a sane default style.
+Produce strict CSS1/XHTML-1.0 output.
 See
 .Sx XHTML Output .
 .El
 .Pp
 If multiple input files are specified, these will be processed by the
 corresponding filter in-order.
+.Ss UTF\-8 Output
+Use
+.Fl T Ns Cm utf8
+to force a UTF\-8 locale.
+See
+.Sx Locale Output
+for details and options.
+.Ss Locale Output
+Locale-depending output encoding is triggered with
+.Fl T Ns Cm locale .
+This option is not available on all systems: systems without locale
+support, or those whose internal representation is not natively UCS-4,
+will fall back to
+.Fl T Ns Cm ascii .
+See
+.Sx ASCII Output
+for font style specification and available command-line arguments.
 .Ss ASCII Output
 Output produced by
 .Fl T Ns Cm ascii ,
@@ -210,6 +234,9 @@ Emboldened characters are rendered as
 The special characters documented in
 .Xr mandoc_char 7
 are rendered best-effort in an ASCII equivalent.
+If no equivalent is found,
+.Sq \&?
+is used instead.
 .Pp
 Output width is limited to 78 visible columns unless literal input lines
 exceed this limit.
@@ -228,18 +255,16 @@ Output produced by
 .Fl T Ns Cm html
 conforms to HTML-4.01 strict.
 .Pp
-Font styles and page structure are applied using CSS2.
-By default, no font style is applied to any text,
-although CSS2 is hard-coded to format
-the basic structure of output.
-.Pp
 The
 .Pa example.style.css
-file documents the range of styles applied to output and, if used, will
-cause rendered documents to appear as they do in
-.Fl T Ns Cm ascii .
+file documents style-sheet classes available for customising output.
+If a style-sheet is not specified with
+.Fl O Ns Ar style ,
+.Fl T Ns Cm html
+defaults to simple output readable in any graphical or text-based web
+browser.
 .Pp
-Special characters are rendered in decimal-encoded UTF-8.
+Special characters are rendered in decimal-encoded UTF\-8.
 .Pp
 The following
 .Fl O
@@ -376,14 +401,14 @@ output mode implies
 .Sh EXAMPLES
 To page manuals to the terminal:
 .Pp
-.D1 $ mandoc \-Wall,stop mandoc.1 2\*(Gt&1 | less
-.D1 $ mandoc mandoc.1 mdoc.3 mdoc.7 | less
+.Dl $ mandoc \-Wall,stop mandoc.1 2\*(Gt&1 | less
+.Dl $ mandoc mandoc.1 mdoc.3 mdoc.7 | less
 .Pp
 To produce HTML manuals with
 .Ar style.css
 as the style-sheet:
 .Pp
-.D1 $ mandoc \-Thtml -Ostyle=style.css mdoc.7 \*(Gt mdoc.7.html
+.Dl $ mandoc \-Thtml -Ostyle=style.css mdoc.7 \*(Gt mdoc.7.html
 .Pp
 To check over a large set of manuals:
 .Pp
@@ -391,7 +416,7 @@ To check over a large set of manuals:
 .Pp
 To produce a series of PostScript manuals for A4 paper:
 .Pp
-.D1 $ mandoc \-Tps \-Opaper=a4 mdoc.7 man.7 \*(Gt manuals.ps
+.Dl $ mandoc \-Tps \-Opaper=a4 mdoc.7 man.7 \*(Gt manuals.ps
 .Sh DIAGNOSTICS
 Standard error messages reporting parsing errors are prefixed by
 .Pp
@@ -463,6 +488,13 @@ Each input and output format is separately noted.
 .Ss ASCII Compatibility
 .Bl -bullet -compact
 .It
+Unrenderable unicode codepoints specified with
+.Sq \e[uNNNN]
+escapes are printed as
+.Sq \&?
+in mandoc.
+In GNU troff, these raise an error.
+.It
 The
 .Sq \&Bd \-literal
 and
@@ -473,7 +505,7 @@ in
 .Fl T Ns Cm ascii
 are synonyms, as are \-filled and \-ragged.
 .It
-In GNU troff, the
+In historic GNU troff, the
 .Sq \&Pa
 .Xr mdoc 7
 macro does not underline when scoped under an
@@ -498,8 +530,6 @@ macro in
 has no effect.
 .It
 Words aren't hyphenated.
-.It
-Sentences are unilaterally monospaced.
 .El
 .Ss HTML/XHTML Compatibility
 .Bl -bullet -compact
@@ -532,9 +562,12 @@ and
 lists render similarly.
 .El
 .Sh SEE ALSO
+.Xr eqn 7 ,
 .Xr man 7 ,
 .Xr mandoc_char 7 ,
-.Xr mdoc 7
+.Xr mdoc 7 ,
+.Xr roff 7 ,
+.Xr tbl 7
 .Sh AUTHORS
 The
 .Nm
@@ -565,12 +598,6 @@ and
 and cause them to forget the formatting of the prior next-line scope.
 .Pp
 The
-.Sq i
-macro in
-.Fl m Ns Cm an
-should italicise all subsequent text if a line argument is not provided.
-This behaviour is not implemented.
-The
 .Sq \(aq
 control character is an alias for the standard macro control character
 and does not emit a line-break as stipulated in GNU troff.