don't launch GUI dialogs from command line when GUI is text

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@68147 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/parser.c

@@ -321,6 +321,7 @@ int G_parser(int argc, char **argv)
 {
     int need_first_opt;
     int opt_checked = 0;
+    const char *gui_envvar;
     char *ptr, *tmp_name, *err;
     int i;
     struct Option *opt;
@@ -433,9 +434,10 @@ int G_parser(int argc, char **argv)
     }
 
     /* If there are NO arguments, go interactive */
-
+    gui_envvar = G_getenv_nofatal("GUI");
     if (argc < 2 && (st->has_required || G__has_required_rule())
-        && !st->no_interactive && isatty(0)) {
+        && !st->no_interactive && isatty(0) &&
+        G_strcasecmp(gui_envvar, "text") != 0) {
 	if (module_gui_wx() == 0)
             return -1;
     }