Re: [Groff] Re: new grotty format

[Colin Watson]

On Wed, Jun 19, 2002 at 03:22:58PM +0200, Werner LEMBERG wrote:

> > I put together a patch to grotty to allow the device control command
> > \X'sgr:0' to disable SGR output, which would allow this to be
> > controlled on a system-wide basis by man.local and mdoc.local.
> 
> I think my new .color request is easier to use.

You're right, and I like it. Unfortunately it doesn't have any effect on
the way grotty renders bold, underline, etc., since that isn't
controlled by troff's colour commands. Would you consider this patch?

Index: tty.cc
===================================================================
RCS file: /var/cvs/groff/src/devices/grotty/tty.cc,v
retrieving revision 1.11
diff -p -u -r1.11 tty.cc
--- tty.cc      13 Feb 2002 23:50:43 -0000      1.11
+++ tty.cc      19 Jun 2002 16:04:32 -0000
@@ -357,6 +357,14 @@ void tty_printer::special(char *arg, con
 {
   if (type == 'u')
     add_char(*arg - '0', env->hpos, env->vpos, env->col, env->fill, CU_MODE);
+  else if (type == 'p' && arg != 0) {
+    if (strncmp(arg, "sgr:", 4) == 0) {
+      if (arg[4] == '0')
+       old_drawing_scheme = 1;
+      else
+       old_drawing_scheme = 0;
+    }
+  }
 }
 
 void tty_printer::change_color(const environment *env)

I've tested this with:

  .color 0
  \!x X sgr:0

in man.local, and it has exactly the desired effect.

> > Unfortunately, putting \X'sgr:0'\c in man.local appears to cause an
> > extra couple of line breaks just after the first page header, which
> > is quite noticeable; I haven't been able to find a piece of troff
> > that will just embed 'x X sgr:0' into the ditroff output without any
> > surrounding motions.
> 
> For such situations I've recently added the `output' request:
> 
>   .output x X sgr:0

Thanks, that was exactly the hint I needed. My attempts had been getting
far too convoluted ...

-- 
Colin Watson                                  address@hidden