alternative fix for menu search (':')

This avoids clearing core context variables within a window port.

src/botl.c

@@ -245,6 +245,8 @@ do_statusline2(void)
 void
 bot(void)
 {
+    if (gp.program_state.in_getlin)
+        return;
     /* dosave() flags completion by setting u.uhp to -1; suppress_map_output()
        covers program_state.restoring and is used for status as well as map */
     if (u.uhp != -1 && gy.youmonst.data
@@ -265,6 +267,8 @@ bot(void)
 void
 timebot(void)
 {
+    if (gp.program_state.in_getlin)
+        return;
     /* we're called when iflags.time_botl is set and general gc.context.botl
        is clear; iflags.time_botl gets set whenever gm.moves changes value
        so there's no benefit in tracking previous value to decide whether

src/windows.c

@@ -1679,5 +1679,11 @@ get_menu_coloring(const char *str, int *color, int *attr)
     return FALSE;
 }
 
-
+void
+getlin(const char *query, register char *bufp)
+{
+    gp.program_state.in_getlin = TRUE;
+    (*windowprocs.win_getlin)(query, bufp);
+    gp.program_state.in_getlin = FALSE;
+}
 /*windows.c*/