Merge pull request #422 from stsquad/remove-ctrl-squash-space

* lib/mu-str.c: squash white space ctrl chars to spaces (#390)

lib/mu-str.c

@@ -1056,16 +1056,20 @@ mu_str_remove_ctrl_in_place (char *str)
 		if (!iscntrl(*cur))
 			continue;
 
-		/* control char detected... */
+		if (isspace(*cur)) {
+			/* squash special white space into a simple space */
+			*cur = ' ';
+		} else {
+			/* remove other control characters */
 			gstr = g_string_sized_new (strlen (str));
 			for (cur = str; *cur; ++cur)
 				if (!iscntrl (*cur))
 					g_string_append_c (gstr, *cur);
 			memcpy (str, gstr->str, gstr->len); /* fits */
 			g_string_free (gstr, TRUE);
-
 			break;
 		}
+	}
 
 	return str;
 }