Implement new number register `.br' which is set to 1 if a macro has

been called as .foo and to 0 if called as 'bar.  This is useful for
-mtrace so that requests can be reliably traced too.

* src/roff/troff/input.cpp (input_iterator): Add virtual function
`get_break_flag'.
(macro_iterator): Add `with_break' member and `get_break_flag'
function.
Update constructors.
(input_stack): Add function `get_break_flag'.
(break_flag_reg): New number register class.
(input_init_requests): Register `.br'.

* src/roff/troff/TODO: Updated.

* tmac/trace.tmac: s/!!sp/!!!sp/.
Modify definitions of `de', `de1', `am', and `am1' to use \n[.br].

* docs/groff.texinfo, man/groff.man, man/groff_diff.man, NEWS:
Document it.

1 files changed, 14 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index a680c095..763f2ccb 100644
--- a/NEWS
+++ b/NEWS
@@ -22,6 +22,18 @@ o Swedish macro localization has been added also.
 o Two new requests `device' and `devicem' have been added which are
   equivalents to the \X and \Y escapes, respectively.
 
+o A new read-only number register `.br' is available which is set to 1
+  if a macro is called as .foo and to 0 if called as 'foo.  This allows to
+  reliably modify requests.
+
+    .als bp@orig bp
+    .de bp
+    .  tm before bp
+    .  ie \\n[.br] .bp@orig
+    .  el 'bp@orig
+    .  tm after bp
+    ..
+
 Pic
 ---
 
@@ -34,6 +46,8 @@ Macro Packages
 
 o A new macro `Dx' has been added which identifies the DragonFly OS.
 
+o -mtrace now shows whether a macro has been called as .foo or as 'foo.
+
 
 VERSION 1.19.2
 ==============