Minimal cleanup of the COMPATIBILITY section:

* Mention that the list is incomplete.
* Quoting quotes by doubling them is documented in the
Ossanna/Kernighan/Ritter Nroff/Troff User's Manual, Section 7.3.
* Our roff(7) manual documents handling of escape sequences;
besides, we partially support \w and \z now.
* Scaling widths are documented in roff(7) as well, and f is not \f.
* Negative arguments to .sp are handled now.

diff --git a/man.7 b/man.7
index 62e04826e8158e104d91e8a868e85fc2616ba5e8..4b64d7f442f43b23edb9bf14fd6e37b30bb7876e 100644 (file)
--- a/man.7
+++ b/man.7
@@ -1,4 +1,4 @@
-.\"    $Id: man.7,v 1.126 2014/03/31 01:05:32 schwarze Exp $
+.\"    $Id: man.7,v 1.127 2014/06/22 16:39:45 schwarze Exp $

 .\"
 .\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
 .\"
 .\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>


@@ -16,7 +16,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"

-.Dd $Mdocdate: March 31 2014 $
+.Dd $Mdocdate: June 22 2014 $

 .Dt MAN 7
 .Os
 .Sh NAME
 .Dt MAN 7
 .Os
 .Sh NAME


@@ -873,10 +873,11 @@ Note that macros like
 .Sx \&BR
 open and close a font scope for each argument.
 .Sh COMPATIBILITY
 .Sx \&BR
 open and close a font scope for each argument.
 .Sh COMPATIBILITY

-This section documents areas of questionable portability between
+This section mentions some areas of questionable portability between

 implementations of the
 .Nm
 language.
 implementations of the
 .Nm
 language.

+More incompatibilities exist.

 .Pp
 .Bl -dash -compact
 .It
 .Pp
 .Bl -dash -compact
 .It


@@ -888,47 +889,12 @@ to close out a literal context opened with
 .Sx \&nf .
 This behaviour may not be portable.
 .It
 .Sx \&nf .
 This behaviour may not be portable.
 .It

-In quoted literals, GNU troff allowed pair-wise double-quotes to produce
-a standalone double-quote in formatted output.
-It is not known whether this behaviour is exhibited by other formatters.
-.It

 troff suppresses a newline before
 .Sq \(aq
 macro output; in mandoc, it is an alias for the standard
 .Sq \&.
 control character.
 .It
 troff suppresses a newline before
 .Sq \(aq
 macro output; in mandoc, it is an alias for the standard
 .Sq \&.
 control character.
 .It

-The
-.Sq \eh
-.Pq horizontal position ,
-.Sq \ev
-.Pq vertical position ,
-.Sq \em
-.Pq text colour ,
-.Sq \eM
-.Pq text filling colour ,
-.Sq \ez
-.Pq zero-length character ,
-.Sq \ew
-.Pq string length ,
-.Sq \ek
-.Pq horizontal position marker ,
-.Sq \eo
-.Pq text overstrike ,
-and
-.Sq \es
-.Pq text size
-escape sequences are all discarded in mandoc.
-.It
-The
-.Sq \ef
-scaling unit is accepted by mandoc, but rendered as the default unit.
-.It
-The
-.Sx \&sp
-macro does not accept negative values in mandoc.
-In GNU troff, this would result in strange behaviour.
-.It

 In page header lines, GNU troff versions up to and including 1.21
 only print
 .Ar volume
 In page header lines, GNU troff versions up to and including 1.21
 only print
 .Ar volume


@@ -944,8 +910,13 @@ is given, like in
 .El
 .Pp
 The
 .El
 .Pp
 The

-.Sx OP
-macro is part of the extended
+.Sx EE ,
+.Sx EX ,
+.Sx OP ,
+.Sx UE ,
+and
+.Sx UR
+macros are part of the GNU extended

 .Nm
 macro set, and may not be portable to non-GNU troff implementations.
 .Sh SEE ALSO
 .Nm
 macro set, and may not be portable to non-GNU troff implementations.
 .Sh SEE ALSO