- /* Returns the same things as parser, except that tokv_eof
- * is turned into 0. If *didexist is 0 then errno will
- * have been set.
+ /* Returns the same things as parser, except that tokv_eof is turned
+ * into 0. If *didexist is 0 then errno will have been set.
+ * *string will be copied by parse_file so it may be be overwritten
+ * during the parsing (so, for example, yytext need not be copied).