===================================================================
RCS file: /cvs/mandoc/mandoc.1,v
retrieving revision 1.41
retrieving revision 1.52
diff -u -p -r1.41 -r1.52
--- mandoc/mandoc.1	2009/10/03 16:36:06	1.41
+++ mandoc/mandoc.1	2010/03/22 20:43:00	1.52
@@ -1,4 +1,4 @@
-.\"	$Id: mandoc.1,v 1.41 2009/10/03 16:36:06 kristaps Exp $
+.\"	$Id: mandoc.1,v 1.52 2010/03/22 20:43:00 kristaps Exp $
 .\"
 .\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
 .\"
@@ -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: October 3 2009 $
+.Dd $Mdocdate: March 22 2010 $
 .Dt MANDOC 1
 .Os
 .
@@ -28,7 +28,7 @@
 .Nm mandoc
 .Op Fl f Ns Ar option...
 .Op Fl m Ns Ar format
-.Op Fl o Ns Ar option...
+.Op Fl O Ns Ar option...
 .Op Fl T Ns Ar output
 .Op Fl V
 .Op Fl W Ns Ar err...
@@ -54,7 +54,7 @@ Input format.  See
 for available formats.  Defaults to
 .Fl m Ns Ar andoc .
 .
-.It Fl o Ns Ar option...
+.It Fl O Ns Ar option...
 Comma-separated output options.  See
 .Sx Output Options
 for details.
@@ -96,55 +96,14 @@ or
 .Xr man 7
 text from stdin, implying
 .Fl m Ns Ar andoc ,
-and prints 78-column backspace-encoded output to stdout as if
+and produces
 .Fl T Ns Ar ascii
-were provided.
+output.
 .
 .Pp
 .Ex -std mandoc
 .
 .
-.Ss Punctuation and Spacing
-If punctuation is set apart from words, such as in the phrase
-.Dq to be \&, or not to be ,
-it's processed by
-.Nm
-according to the following rules:  opening punctuation
-.Po
-.Sq \&( ,
-.Sq \&[ ,
-and
-.Sq \&{
-.Pc
-is not followed by a space; closing punctuation
-.Po
-.Sq \&. ,
-.Sq \&, ,
-.Sq \&; ,
-.Sq \&: ,
-.Sq \&? ,
-.Sq \&! ,
-.Sq \&) ,
-.Sq \&]
-and
-.Sq \&}
-.Pc
-is not preceded by whitespace.
-.
-.Pp
-If the input is
-.Xr mdoc 7 ,
-these rules are also applied to macro arguments when appropriate.
-.
-.Pp
-White-space, in non-literal (normal) mode, is stripped from input and
-replaced on output by a single space.  Thus, if you wish to preserve multiple
-spaces, they must be space-escaped or used in a literal display mode, e.g.,
-.Sq \&Bd \-literal
-in
-.Xr mdoc 7 .
-.
-.
 .Ss Input Formats
 The
 .Nm
@@ -195,21 +154,32 @@ The
 .Nm
 utility accepts the following
 .Fl T
-arguments:
+arguments (see
+.Sx OUTPUT ) :
 .
 .Bl -tag -width Ds
 .It Fl T Ns Ar ascii
 Produce 7-bit ASCII output, backspace-encoded for bold and underline
-styles.  This is the default.
+styles.  This is the default.  See
+.Sx ASCII Output .
 .
 .It Fl T Ns Ar html
-Produce strict HTML-4.01 output, with a sane default style.
+Produce strict HTML-4.01 output, with a sane default style.  See
+.Sx HTML Output .
 .
+.It Fl T Ns Ar xhtml
+Produce strict XHTML-1.0 output, with a sane default style.  See
+.Sx XHTML Output .
+.
 .It Fl T Ns Ar tree
 Produce an indented parse tree.
 .
 .It Fl T Ns Ar lint
 Parse only: produce no output.
+Implies
+.Fl W Ns Ar all
+and
+.Fl f Ns Ar strict .
 .El
 .
 .Pp
@@ -228,6 +198,11 @@ When rewinding the scope of a block macro, forces the 
 scope violations.  This can seriously mangle the resulting tree.
 .Pq mdoc only
 .
+.It Fl f Ns Ar ign-escape
+Ignore invalid escape sequences.
+This is the default, but the option can be used to override an earlier
+.Fl f Ns Ar strict .
+.
 .It Fl f Ns Ar no-ign-escape
 Don't ignore invalid escape sequences.
 .
@@ -250,36 +225,39 @@ Don't halt when encountering parse errors.  Useful wit
 over a large set of manuals passed on the command line.
 .El
 .
+.
 .Ss Output Options
 For the time being, only
 .Fl T Ns Ar html
-is the only mode with output options:
+and
+.Fl T Ns Ar xhtml
+accepts output options:
 .Bl -tag -width Ds
-.It Fl o Ns Ar style=style.css
+.It Fl O Ns Ar style=style.css
 The file
 .Ar style.css
 is used for an external style-sheet.  This must be a valid absolute or
 relative URI.
-.It Fl o Ns Ar includes=fmt
+.It Fl O Ns Ar includes=fmt
 The string
 .Ar fmt ,
-for example, 
+for example,
 .Ar ../src/%I.html ,
 is used as a template for linked header files (usually via the
 .Sq \&In
 macro).  Instances of
-.Sq %I
+.Sq \&%I
 are replaced with the include filename.  The default is not to present a
 hyperlink.
-.It Fl o Ns Ar man=fmt
+.It Fl O Ns Ar man=fmt
 The string
 .Ar fmt ,
-for example, 
+for example,
 .Ar ../html%S/%N.%S.html ,
 is used as a template for linked manuals (usually via the
 .Sq \&Xr
 macro).  Instances of
-.Sq %N
+.Sq \&%N
 and
 .Sq %S
 are replaced with the linked manual's name and section, respectively.
@@ -287,6 +265,110 @@ If no section is included, section 1 is assumed.  The 
 present a hyperlink.
 .El
 .
+.
+.Sh OUTPUT
+This section documents output details of
+.Nm .
+In general, output conforms to the traditional manual style of a header,
+a body composed of sections and sub-sections, and a footer.
+.Pp
+The text style of output characters (non-macro characters, punctuation,
+and white-space) is dictated by context.
+.Pp
+White-space is generally stripped from input.  This can be changed with
+character escapes (specified in
+.Xr mandoc_char 7 )
+or literal modes (specified in
+.Xr mdoc 7
+and
+.Xr man 7 ) .
+.Pp
+If non-macro punctuation is set apart from words, such as in the phrase
+.Dq to be \&, or not to be ,
+it's processed by
+.Nm ,
+regardless of output format, according to the following rules:  opening
+punctuation
+.Po
+.Sq \&( ,
+.Sq \&[ ,
+and
+.Sq \&{
+.Pc
+is not followed by a space; closing punctuation
+.Po
+.Sq \&. ,
+.Sq \&, ,
+.Sq \&; ,
+.Sq \&: ,
+.Sq \&? ,
+.Sq \&! ,
+.Sq \&) ,
+.Sq \&]
+and
+.Sq \&}
+.Pc
+is not preceded by white-space.
+.
+.Pp
+If the input is
+.Xr mdoc 7 ,
+however, these rules are also applied to macro arguments when appropriate.
+.
+.
+.Ss ASCII Output
+Output produced by
+.Fl T Ns Ar ascii ,
+which is the default, is rendered in standard 7-bit ASCII documented in
+.Xr ascii 7 .
+.Pp
+Font styles are applied by using back-spaced encoding such that an
+underlined character
+.Sq c
+is rendered as
+.Sq _ Ns \e[bs] Ns c ,
+where
+.Sq \e[bs]
+is the back-space character number 8.  Emboldened characters are rendered as
+.Sq c Ns \e[bs] Ns c .
+.Pp
+The special characters documented in
+.Xr mandoc_char 7
+are rendered best-effort in an ASCII equivalent.
+.Pp
+Output width is limited to 78 visible columns unless literal input lines
+exceed this limit.
+.
+.
+.Ss HTML Output
+Output produced by
+.Fl T Ns Ar 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 Ar ascii .
+.Pp
+Special characters are rendered in decimal-encoded UTF-8.
+.
+.
+.Ss XHTML Output
+Output produced by
+.Fl T Ns Ar xhtml
+conforms to XHTML-1.0 strict.
+.Pp
+See
+.Sx HTML Output
+for details; beyond generating XHTML tags instead of HTML tags, these
+output modes are identical.
+.
+.
 .Sh EXAMPLES
 To page manuals to the terminal:
 .
@@ -299,7 +381,7 @@ To produce HTML manuals with
 .Ar style.css
 as the style-sheet:
 .Pp
-.D1 % mandoc \-Thtml -ostyle=style.css mdoc.7 > mdoc.7.html
+.D1 % mandoc \-Thtml -Ostyle=style.css mdoc.7 > mdoc.7.html
 .Pp
 To check over a large set of manuals:
 .
@@ -315,18 +397,18 @@ compatibility with
 Each input and output format is separately noted.
 .
 .
-.Ss ASCII output
+.Ss ASCII Compatibility
 .Bl -bullet -compact
 .It
-The 
+The
 .Sq \e~
-special character doesn't produce expected behaviour in 
+special character doesn't produce expected behaviour in
 .Fl T Ns Ar ascii .
 .
 .It
-The 
+The
 .Sq \&Bd \-literal
-and 
+and
 .Sq \&Bd \-unfilled
 macros of
 .Xr mdoc 7
@@ -335,7 +417,7 @@ in
 are synonyms, as are \-filled and \-ragged.
 .
 .It
-In 
+In
 .Xr groff 1 ,
 the
 .Sq \&Pa
@@ -374,7 +456,39 @@ retains spaces.
 .It
 Sentences are unilaterally monospaced.
 .El
-.\" SECTION
+.
+.
+.Ss HTML/XHTML Compatibility
+.Bl -bullet -compact
+.It
+The
+.Sq \efP
+escape will revert the font to the previous
+.Sq \ef
+escape, not to the last rendered decoration, which is now dictated by
+CSS instead of hard-coded.  It also will not span past the current
+scope, for the same reason.  Note that in
+.Sx ASCII Output
+mode, this will work fine.
+.It
+The
+.Xr mdoc 7
+.Sq \&Bl \-hang
+and
+.Sq \&Bl \-tag
+list types render similarly (no break following overreached left-hand
+side) due to the expressive constraints of HTML.
+.
+.It
+The
+.Xr man 7
+.Sq IP
+and
+.Sq TP
+lists render similarly.
+.El
+.
+.
 .Sh SEE ALSO
 .Xr mandoc_char 7 ,
 .Xr mdoc 7 ,
@@ -386,11 +500,46 @@ The
 utility was written by
 .An Kristaps Dzonsons Aq kristaps@kth.se .
 .
+.
 .Sh CAVEATS
+The
+.Fl T Ns Ar html
+and
+.Fl T Ns Ar xhtml
+CSS2 styling used for
+.Fl m Ns Ar doc
+input lists does not render properly in older browsers, such as Internet
+Explorer 6 and earlier.
+.Pp
 In
-.Fl T Ns Ar html ,
+.Fl T Ns Ar html
+and
+.Fl T Ns Ar xhtml ,
 the maximum size of an element attribute is determined by
 .Dv BUFSIZ ,
 which is usually 1024 bytes.  Be aware of this when setting long link
-formats with
-.Fl o Ns Ar man=fmt .
+formats, e.g.,
+.Fl O Ns Ar style=really/long/link .
+.Pp
+The
+.Fl T Ns Ar html
+and
+.Fl T Ns Ar xhtml
+output modes don't render the
+.Sq \es
+font size escape documented in
+.Xr mdoc 7
+and
+.Xr man 7 .
+.Pp
+Nesting elements within next-line element scopes of
+.Fl m Ns Ar an ,
+such as
+.Sq br
+within an empty
+.Sq B ,
+will confuse
+.Fl T Ns Ar html
+and
+.Fl T Ns Ar xhtml
+and cause them to forget the formatting of the prior next-line scope.