+
+
+/* Parse a command line of the following format:
+ *
+ * +<tag>|-<tag> [...] [--] <search-terms>
+ *
+ * Output Parameters:
+ * ops contains a list of tag operations
+ * query_str the search terms.
+ *
+ * The ops argument is not cleared.
+ */
+
+tag_parse_status_t
+parse_tag_command_line (void *ctx, int argc, char **argv,
+ char **query_str, tag_op_list_t *ops);
+
+/*
+ * Test tags for some forbidden cases.
+ *
+ * Relax the checks if 'remove' is true to allow removal of previously
+ * added forbidden tags.
+ *
+ * return: NULL if OK,
+ * explanatory message otherwise.
+ */
+const char *
+illegal_tag (const char *tag, notmuch_bool_t remove);
+