Add `\%^' escape to handle the parameters to a macro as a string

argument.

* src/roff/troff/input.h (DOUBLE_QUOTE): New special character.

* src/roff/troff/input.cpp (input_iterator, input_stack,
macro_iterator): Add `space_follows_arg' member function.
(macro_iterator::add_arg): Add parameter to set the `space_follows'
flag.
(arg_list): Add member `space_follows'.
Update constructor and all callers.
(decode_args): Store discarded double quotes.
(interpolate_args): Handle DOUBLE_QUOTE.
Add `\%^' escape.
(get_copy, token::next, composite_glyph_name): Handle DOUBLE_QUOTE.

* tmac/trace.tmac: Trace .nr, .ds, .ds1, .as, .as1.

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

1 files changed, 5 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index 5d8a39a6..c25941df 100644
--- a/NEWS
+++ b/NEWS
@@ -57,6 +57,10 @@ o A new debugging request, `pev', has been added to print all of the current
   environment, then iterates through all of the known environments, printing
   each except the one that is current.
 
+o A new escape `\$^' has been added.  It represents the parameters of a
+  macro as if they were an argument to the `ds' request.  This is used by
+  `trace.tmac'.
+
 Pic
 ---
 
@@ -75,7 +79,6 @@ Afmtodit
 
 o New option `-c' to output more font information as comments.
 
-
 Macro Packages
 --------------
 
@@ -83,6 +86,7 @@ o A new macro `Dx' has been added to the mdoc package which identifies the
   DragonFly OS.
 
 o -mtrace now shows whether a macro has been called as .foo or as 'foo.
+  It also traces calls to the `nr', `ds', `ds1', `as', and `as1' requests.
 
 o The PSPIC macro now works with all devices (producing a hollow
   rectangle on devices which don't support inclusion of PS images) and