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From: Bruno Haible <bruno@clisp.org>
To: bug-gnulib@gnu.org, Collin Funk <collin.funk1@gmail.com>
Subject: Re: [PATCH] gnulib-tool.py: Fix configure.ac output.
Date: Wed, 28 Feb 2024 00:39:57 +0100	[thread overview]
Message-ID: <6284451.Sgy9Pd6rRy@nimes> (raw)
In-Reply-To: <2316ff4f-c730-4a92-9d02-e4b7bd016440@gmail.com>

Collin Funk wrote:
> > I guess I wasn't very familiar with raw strings when I did this change.
> No worries, it was pretty easy to find and fix. I remember a professor
> in college telling us to always use them for Python regular
> expressions. It seems this is also recommended by the Python people,
> see the '\' character under this page:
> https://docs.python.org/3/library/re.html#regular-expression-syntax

Indeed, this doc contains the explanation for the 'pycodestyle'
warning that I was seeing. With a plain string instead of a raw string,
I get:

$ pycodestyle *.py
GLEmiter.py:535:26: W605 invalid escape sequence '\.'
GLEmiter.py:535:35: W605 invalid escape sequence '\.'

which indicates that the Python parser would have eaten up the backslash
before the regular expression engine could see it.


  reply	other threads:[~2024-02-27 23:40 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-27 22:31 [PATCH] gnulib-tool.py: Fix configure.ac output Collin Funk
2024-02-27 22:39 ` Bruno Haible
2024-02-27 23:01   ` Collin Funk
2024-02-27 23:39     ` Bruno Haible [this message]
2024-02-28  0:04       ` Collin Funk

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