24279: allow terminal changes after zle -I to be acquired by main shell

ChangeLog

@@ -1,3 +1,9 @@
+2007-12-18  Peter Stephenson  <pws@csr.com>
+
+	* 24279: Src/jobs.c, Src/zle_main.c, Src/zle_thingy.c: allow
+	terminal changes in zle -I to be remembered in normal shell
+	settings.
+
 2007-12-17  Peter Stephenson  <pws@csr.com>
 
 	* unposted: Src/utils.c: suppress harmless warning.

Src/Zle/zle_main.c

@@ -208,10 +208,21 @@ mod_export void
 zsetterm(void)
 {
     struct ttyinfo ti;
-
 #if defined(FIONREAD)
     int val;
+#endif
 
+    if (fetchttyinfo) {
+	/*
+	 * User requested terminal to be returned to normal use,
+	 * so remember the terminal settings if not frozen.
+	 */
+	if (!ttyfrozen)
+	    gettyinfo(&shttyinfo);
+	fetchttyinfo = 0;
+    }
+
+#if defined(FIONREAD)
     ioctl(SHTTY, FIONREAD, (char *)&val);
     if (val) {
 	/*
@@ -1113,6 +1124,7 @@ zleread(char **lp, char **rp, int flags, int context)
     insmode = unset(OVERSTRIKE);
     eofsent = 0;
     resetneeded = 0;
+    fetchttyinfo = 0;
     raw_lp = lp;
     lpromptbuf = promptexpand(lp ? *lp : NULL, 1, NULL, NULL);
     pmpt_attr = txtchange;

Src/Zle/zle_thingy.c

@@ -711,6 +711,17 @@ bin_zle_call(char *name, char **args, UNUSED(Options ops), UNUSED(char func))
     return ret;
 }
 
+
+/*
+ * Flag that the user has requested the terminal be trashed
+ * for whatever use.  We attempt to keep the tty settings in
+ * this mode synced with the normal (non-zle) settings unless
+ * they are frozen.
+ */
+
+/**/
+int fetchttyinfo;
+
 /**/
 static int
 bin_zle_invalidate(UNUSED(char *name), UNUSED(char **args), UNUSED(Options ops), UNUSED(char func))
@@ -721,7 +732,18 @@ bin_zle_invalidate(UNUSED(char *name), UNUSED(char **args), UNUSED(Options ops),
      * true if a completion widget is active.
      */
     if (zleactive) {
+	int wastrashed = trashedzle;
 	trashzle();
+	if (!wastrashed && (zlereadflags & ZLRF_NOSETTY)) {
+	    /*
+	     * We normally wouldn't have restored the terminal
+	     * in this case, but as it's at user request we do
+	     * so (hence the apparently illogical sense of the
+	     * second part of the test).
+	     */
+	    settyinfo(&shttyinfo);
+	}
+	fetchttyinfo = 1;
 	return 0;
     } else
 	return 1;

Src/jobs.c

@@ -93,7 +93,7 @@ static struct tms shtms;
 /* 1 if ttyctl -f has been executed */
  
 /**/
-int ttyfrozen;
+mod_export int ttyfrozen;
 
 /* Previous values of errflag and breaks if the signal handler had to
  * change them. And a flag saying if it did that. */