(enum re_opcode_t): New opcode on_failure_jump_nastyloop.
(print_partial_compiled_pattern, re_compile_fastmap): Handle new opcode. (regex_compile): Use on_failure_jump_nastyloop for non-greedy loops. (re_match_2_internal): Add code for on_failure_jump_nastyloop when executing it as well as when popping it off the stack to find infinite loops in non-greedy repetition operators.
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