GNU bug report logs - #39598
26.3; Emacs is extremely unresponsive on a trivial python file

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Message #32 received at 39598 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 39598 <at> debbugs.gnu.org
Subject: Re: bug#39598: 26.3; Emacs is extremely unresponsive on a trivial
 python file
Date: Sat, 15 Feb 2020 20:31:45 +0100

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> Why do you need that intermediate buffer to be in Python mode?

That's an intermediate state of the buffer where the rest of the migration
code is. I was not trying to hit a corner case, this is just the way I
happen to write code -- sometimes a paste text into the the buffer where
the rest of the code is and then I edit it until it becomes a valid data
structure. I am pretty sure I am not the only one who does this.

> I guess because the code is tuned to support valid Python code, not
something that shouldn't happen in Python sources?

That example *is* a valid python code. And the behavior I see *is* a bug.
And honestly, I don't think that this was a design choice along the lines
"we're going to write an optimal parser for this subset of the language but
we will occasionally hang up on this one".

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