IS_HEX_AT        2681 ext/psych/yaml/scanner.c                     && IS_HEX_AT(parser->buffer, 1)
IS_HEX_AT        2682 ext/psych/yaml/scanner.c                     && IS_HEX_AT(parser->buffer, 2))) {
IS_HEX_AT        3228 ext/psych/yaml/scanner.c                         if (!IS_HEX_AT(parser->buffer, k)) {
IS_HEX_AT         234 ext/psych/yaml/yaml_private.h #define IS_HEX(string)    IS_HEX_AT((string),0)