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From: | Rik |
Subject: | [Octave-bug-tracker] [bug #59992] regexp: behaviour of \> (end of a word) inconsistent with MATLAB |
Date: | Tue, 2 Feb 2021 14:27:01 -0500 (EST) |
User-agent: | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36 |
Update of bug #59992 (project octave): Status: None => Confirmed Operating System: GNU/Linux => Any _______________________________________________________ Follow-up Comment #2: Confirmed. Octave uses the PCRE library (Perl Compatible Regular Expressions) for regular expressions. There is no end of word assertion in PCRE, so Octave substitutes '\b' which detects a Word Boundary. A Word Boundary, however, is defined as word character followed by a non-word character. Since '!' is not a word character the test fails between '!' and '+'. It may be that Matlab is using a positive lookahead assertion for a non-word character such as '(?:\W)'. That seems to work for this example. _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?59992> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
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