util: Wrap g_regex_escape_string()

src/shell-util.h

@@ -24,6 +24,8 @@ char    *shell_util_format_date                (const char       *format,
                                                 gint64            time_ms);
 const char *shell_util_translate_time_string   (const char *str);
 
+char    *shell_util_regex_escape               (const char *str);
+
 gboolean shell_write_string_to_stream          (GOutputStream    *stream,
                                                 const char       *str,
                                                 GError          **error);