Add some Bell labs extensions to the -ms macros.

* tmac/s.tmac (.SC, .UC, .P1, .P2) [bell]: New macros.

* tmac/groff_ms.man, doc/groff.texinfo, NEWS: Document `-r bell'.

1 files changed, 27 insertions, 0 deletions

diff --git a/tmac/s.tmac b/tmac/s.tmac
index f652c005..286ef75c 100644
--- a/tmac/s.tmac
+++ b/tmac/s.tmac
@@ -2073,4 +2073,31 @@ Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
 .   \}
 ..
 .par@load-init
+.\" ****************************
+.\" ******** module bell ********
+.\" ****************************
+.\" Emulate Bell Labs localisms by setting `-r bell=1' on the command line.
+.\" They're not enabled by default because (a) they're not documented, and
+.\" (b) the .P1 macro collides with a different one in the Berkeley version. 
+.\" What's done here is sufficient to give back the Guide to EQN (1976) its
+.\" section headings and restore some text that had gone missing as macro
+.\" arguments; no warranty express or implied is given as to how well the
+.\" typographic details these produce match the original Bell Labs macros.
+.if r bell \{\
+.de SC
+.NH 
+\\$*
+..
+.de UC
+\f(CW\\$*\fP
+..
+.de P1
+.DS L
+ft CW
+..
+.de P2
+.ft
+.DE
+..
+.\}
 .\" Make sure that no blank lines creep in at the end of this file.