Viewing 2 posts - 1 through 2 (of 2 total) Author Posts October 20, 2012 at 1:15 pm #10594 LTTParticipant Options selected: Match Case Use Regular Expression Search Only Word “H_r|H” can match “H_r” and “H”. But “H|H_r” can only match “H” (not in “H_r”). How to understand this? October 20, 2012 at 7:16 pm #10597 Yutaka EmuraKeymaster Hello LTT, This is just because “H” is a part of “H_r”, and so “H” is matched before “H_r” is matched. This is the expected behavior. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Regular Expressions’ is closed to new topics and replies.