From: Marco Trevisan <marco@trevi.me>
To: zsh-workers@zsh.org
Subject: Handling of escaped plus sign ("+") in regular expressions
Date: Wed, 20 May 2020 21:18:33 +0200 [thread overview]
Message-ID: <CAALaScm2RSFT9=FnWWEVXkkxV_KuSO9-z9Jv1NMeuex_9eF9TQ@mail.gmail.com> (raw)
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Hi,
I've been using zsh to run some local scripts I was normally running with
bash and while most of them work as expected, there's a case that weirdly
failed to me (using zsh 5.8):
[[ +123 =~ ^+[0-9]+$ ]]
zsh: failed to compile regex: Invalid preceding regular expression
[[ +123 =~ ^\+[0-9]+$ ]]
zsh: failed to compile regex: Invalid preceding regular expression
The same behavior seems to apply both using RE_MATCH_PCRE and not.
As said, both matches correctly using bash.
Using something like
[[ +123 =~ ^[+][0-9]+$ ]]
Works as expected instead.
next reply other threads:[~2020-05-20 19:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-20 19:18 Marco Trevisan [this message]
2020-05-20 19:51 ` Eric Cook
2020-05-20 20:00 ` Eric Cook
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