Keep up with recent mdoc(7) changes, that include:

- If no .Os call is made, don't print the OS info at all.
- Allow for multiple .Lb calls in the LIBRARY section.
- Improved documentation on punctuation characters.

contrib/groff/tmac/doc-common

@@ -339,12 +339,18 @@
 ..
 .
 .
-.\" NS doc-operating-system global string
+.\" NS doc-default-operating-system global string
-.\" NS   the exact version of the operating system
+.\" NS   the exact (default) version of the operating system
 .\" NS
 .\" NS override this in `mdoc.local', if necessary
 .
-.ds doc-operating-system BSD
+.ds doc-default-operating-system BSD
+.
+.
+.\" NS doc-operating-system global string
+.\" NS   the exact version of the operating system
+.
+.ds doc-operating-system
 .
 .
 .\" NS Os user macro (not parsed, not callable)
@@ -434,10 +440,9 @@
 .ds doc-operating-system-FreeBSD-5.0     5.0
 .
 .de Os
-.  if "\$1"" \
+.  ie "\$1"" \
-.    return
+.    ds doc-operating-system "\*[doc-default-operating-system]
-.
+.  el \{ .ie "\$1"ATT" \{\
-.  ie        "\$1"ATT" \{\
 .    ds doc-operating-system AT&T
 .    if \A\$2 \{\
 .      ie d doc-operating-system-ATT-\$2 \
@@ -472,7 +477,7 @@
 .    ds doc-operating-system \$1
 .    if !"\$2"" \
 .      as doc-operating-system " \$2
-.  \}\}\}\}
+.  \}\}\}\}\}
 ..
 .
 .
@@ -696,6 +701,12 @@
 .nr doc-in-synopsis-section 0
 .
 .
+.\" NS doc-in-library-section global register (bool)
+.\" NS   whether we are in the `library' section
+.
+.nr doc-in-library-section 0
+.
+.
 .\" NS doc-in-see-also-section global register (bool)
 .\" NS   whether we are in the `see also' section
 .
@@ -733,6 +744,7 @@
 .\" NS   doc-func-count
 .\" NS   doc-in-authors-section
 .\" NS   doc-in-files-section
+.\" NS   doc-in-library-section
 .\" NS   doc-in-see-also-section
 .\" NS   doc-in-synopsis-section
 .\" NS   doc-indent-synopsis
@@ -749,6 +761,7 @@
 .
 .ds doc-section-name        NAME
 .ds doc-section-synopsis    SYNOPSIS
+.ds doc-section-library     LIBRARY
 .ds doc-section-description DESCRIPTION
 .ds doc-section-see-also    SEE
 .ds doc-section-files       FILES
@@ -795,6 +808,7 @@
 .    \}
 .    el \{\
 .      nr doc-in-synopsis-section 0
+.      nr doc-in-library-section 0
 .      nr doc-in-see-also-section 0
 .      nr doc-in-files-section 0
 .      nr doc-in-authors-section 0
@@ -806,6 +820,9 @@
 .        nr doc-indent-synopsis 0
 .        nr doc-indent-synopsis-active 0
 .      \}
+.      el \{ .ie "\*[doc-str-dfp]"\*[doc-section-library]" \{\
+.        nr doc-in-library-section 1
+.      \}
 .      el \{ .ie "\*[doc-str-dfp]"\*[doc-section-description]" \{\
 .        nr doc-is-func 0
 .        nr doc-func-count 0
@@ -821,7 +838,7 @@
 .        nr doc-in-files-section 1
 .      el .if    "\*[doc-str-dfp]"\*[doc-section-authors]" \
 .        nr doc-in-authors-section 1
-.      \}\}\}
+.      \}\}\}\}
 .
 .      in 0
 .      nr doc-have-author 0
@@ -1058,6 +1075,7 @@
 .  tm doc-display-vertical == \n[doc-display-vertical]
 .  tm doc-header-string == `\*[doc-header-string]'
 .  tm doc-in-synopsis-section == \n[doc-in-synopsis-section]
+.  tm doc-in-library-section == \n[doc-in-library-section]
 .  tm doc-in-see-also-section == \n[doc-in-see-also-section]
 .  tm doc-in-files-section == \n[doc-in-files-section]
 .  tm doc-in-authors-section == \n[doc-in-authors-section]

contrib/groff/tmac/doc-syms

@@ -716,7 +716,11 @@
 .    \" replacing argument with result
 .    ds doc-arg\n[doc-arg-ptr] "\*[doc-str-Lb]
 .
+.    if \n[doc-in-library-section] \
+.      br
 .    doc-print-recursive
+.    if \n[doc-in-library-section] \
+.      br
 .  \}
 .  el \{\
 .    tm Usage: .Lb library_name ... (#\n[.c])

contrib/groff/tmac/doc.tmac

@@ -3321,6 +3321,7 @@
 .  nr doc-curr-font-saved \n[doc-curr-font]
 .  nr doc-curr-size-saved \n[doc-curr-size]
 .  nr doc-in-synopsis-section-saved \n[doc-in-synopsis-section]
+.  nr doc-in-library-section-saved \n[doc-in-library-section]
 .  nr doc-indent-synopsis-saved \n[doc-indent-synopsis]
 .  nr doc-indent-synopsis-active-saved \n[doc-indent-synopsis-active]
 .  nr doc-have-decl-saved \n[doc-have-decl]
@@ -3460,6 +3461,7 @@
 .  nr doc-curr-font \n[doc-curr-font-saved]
 .  nr doc-curr-size \n[doc-curr-size-saved]
 .  nr doc-in-synopsis-section \n[doc-in-synopsis-section-saved]
+.  nr doc-in-library-section \n[doc-in-library-section-saved]
 .  nr doc-indent-synopsis \n[doc-indent-synopsis-saved]
 .  nr doc-indent-synopsis-active \n[doc-indent-synopsis-active-saved]
 .  nr doc-have-decl \n[doc-have-decl-saved]
@@ -5164,11 +5166,14 @@
 .\" NS   doc-issue-count
 .\" NS   doc-issue-name
 .\" NS   doc-journal-count
-.\" NS   doc-journam-name
+.\" NS   doc-journal-name
 .\" NS   doc-optional-count
 .\" NS   doc-optional-string
 .\" NS   doc-page-number-count
 .\" NS   doc-page-number-string
+.\" NS   doc-publisher-count
+.\" NS   doc-publisher-name
+.\" NS   doc-reference-count
 .\" NS   doc-reference-title-count
 .\" NS   doc-reference-title-name
 .\" NS   doc-reference-title-name-for-book
@@ -5192,6 +5197,8 @@
 .  nr doc-date-count 0
 .  nr doc-page-number-count 0
 .  nr doc-book-count 0
+.  nr doc-publisher-count 0
+.  nr doc-reference-count 0
 .
 .  ds doc-journal-name
 .  ds doc-issue-name
@@ -5204,6 +5211,7 @@
 .  ds doc-date
 .  ds doc-page-number-string
 .  ds doc-book-name
+.  ds doc-publisher-name
 ..
 .
 .

contrib/groff/tmac/groff_mdoc.man

@@ -786,7 +786,7 @@ In the following examples, the left (which is identical to the right) and
 the middle part of the manual page header strings are shown.
 Note how
 .Ql \e&
-prevents the digit\~1 from being a valid numeric expression.
+prevents the digit\~7 from being a valid numeric expression.
 .
 .Bd -ragged
 .Bl -tag -width ".Li .Dt\ FOO\ 2\ i386" -compact -offset indent
@@ -1108,6 +1108,15 @@ distinguishing it from the argument strings.
 To remove the special meaning from a punctuation character escape it with
 .Ql \e& .
 .Pp
+The following punctuation characters are recognized by
+.Nm \-mdoc :
+.
+.Bl -column -offset indent-two XXXXXX XXXXXX XXXXXX XXXXXX
+.It Li .\& Ta Li ,\& Ta Li :\& Ta Li ;\& Ta Li (\&
+.It Li )\& Ta Li [\& Ta Li ]\& Ta Li ?\& Ta Li !\&
+.El
+.Pp
+.
 .Xr Troff
 is limited as a macro language, and has difficulty when presented with a
 string containing a member of the mathematical, logical or quotation set:
@@ -1693,6 +1702,13 @@ look for strings named
 then denotes the keyword to be used with the
 .Ql .Lb
 macro.
+.Pp
+In the
+.Sx LIBRARY
+section an
+.Ql .Lb
+command causes a line break before and after its arguments are printed.
+.Pp
 .
 .Ss Literals
 .