[RP] crude patch to pass windowids from cmd_exec

[eichin-ratp]

This crude patch substitutes the decimal windowid into the first
occurance of & in a cmd_exec string.  There are other ways of doing
this, possibly better [hmm, just occurred to me: any reason cmd_exec
doesn't just set $WINDOWID for the child?  perhaps I'll try patching
that together too] but my main goal is to have a convenient way to
call out to "xwit" (a fine companion to ratpoison) and have it know
the "current" window.                                  _Mark_


Index: actions.c
===================================================================
RCS file: /cvsroot/ratpoison/ratpoison/src/actions.c,v
retrieving revision 1.73
diff -u -r1.73 actions.c
--- actions.c   2001/09/04 07:24:39     1.73
+++ actions.c   2001/09/04 17:54:18
@@ -790,7 +790,7 @@
 char *
 cmd_exec (int interactive, void *data)
 {
-  char *cmd;
+  char *cmd, *subst;
 
   if (data == NULL)
     cmd = get_input (MESSAGE_PROMPT_SHELL_COMMAND);
@@ -800,6 +800,15 @@
   /* User aborted. */
   if (cmd == NULL)
     return NULL;
+
+  if ((subst = strchr (cmd, '&'))) {
+    char *cmd2 = xmalloc(strlen(cmd) + 3*sizeof(current_window()->w) + 1);
+    strncpy (cmd2, cmd, (subst - cmd));
+    sprintf (cmd2 + (subst - cmd), "%ld", current_window()->w);
+    strcat (cmd2, subst + 1);  /* skip the replaced & */
+    free (cmd);
+    cmd = cmd2;
+  }
 
   spawn (cmd);