Prints a bunch of syntax warnings

[Egmont Koblinger]

24.04 beta, fully updated.

Simply start 'itstool'. Notice how it spits out a lot of syntax warnings:

  /usr/bin/itstool:239: SyntaxWarning: invalid escape sequence '\s'
    if re.sub('\s+', ' ', text).strip() != '':
  /usr/bin/itstool:337: SyntaxWarning: invalid escape sequence '\s'
    message = re.sub('\s+', ' ', message).strip()
  /usr/bin/itstool:475: SyntaxWarning: invalid escape sequence '\s'
    return re.sub('\s+', ' ', self.locnote).strip()
  /usr/bin/itstool:477: SyntaxWarning: invalid escape sequence '\s'
    return '(itstool) link: ' + re.sub('\s+', ' ', self.locnoteref).strip()
  /usr/bin/itstool:891: SyntaxWarning: invalid escape sequence '\<'
    regex = re.compile('(.*) \<(.*)\>, (.*)')
  /usr/bin/itstool:926: SyntaxWarning: invalid escape sequence '\s'
    if re.sub('\s+', '', prevtext) == '':
  /usr/bin/itstool:1452: SyntaxWarning: invalid escape sequence '\.'
    _locale_pattern = re.compile('([a-zA-Z0-9-]+)(_[A-Za-z0-9]+)?(@[A-Za-z0-9]+)?(\.[A-Za-z0-9]+)?')

I don't know if these invalid escape sequences in turn cause any actual misbehavior.

(I noticed these warnings while compiling gnome-terminal. These weren't there in 23.10.)

[Egmont Koblinger (egmont-gmail)]

itstool didn't change from 23.10, python3 did.

This article seems relevant: https://adamj.eu/tech/2022/11/04/why-does-python-deprecationwarning-invalid-escape-sequence/

and it also claims that python 3.11 already gave warnings if you asked for it (which wasn't the default), but with python 3.12+ these warnings are enabled by default.

Anyway, itstool is using some Python regex stuff incorrectly.

[Egmont Koblinger (egmont-gmail)]

Filed upstream bug https://github.com/itstool/itstool/issues/54, but upstream has been unmaintained for 2.5 years, not sure if we can expect a quick "official" fix.