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From: Philipp Stephani
Newsgroups: gmane.emacs.bugs
Subject: bug#54131: 29.0.50;
Flyspell incorrectly reports first word in Python f-string
Date: Wed, 23 Feb 2022 21:27:04 +0100
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To: Lars Ingebrigtsen
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Am Mi., 23. Feb. 2022 um 21:13 Uhr schrieb Lars Ingebrigtsen :
>
> Philipp Stephani writes:
>
> > Given this Python file:
> >
> > $ cat /tmp/a.py
> > print(f'hello world')
> >
> > Visit it and enable Flyspell:
> >
> > $ emacs -Q /tmp/a.py -f flyspell-prog-mode
> >
> > Flyspell then marks the string "f'hello" as incorrect, thinking it's a
> > misspelling of "hello". But it shouldn't cross the string boundary.
>
> Hm, yes. In this case, the mode knows that f isn't part of the
> expression, but I guess we have no way of communicating that to ispell?
>
> Skimming ispell-get-word, it looks like it uses a regexp to determine
> what the word at point is, so we'd need to make some sort of framework
> to allow modes to say where a string begins and ends?
Like the syntax table? (nth 8 (syntax-ppss)) gives you the beginning
of the string, and that seems to give correct results even for
f-strings.