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From: ndame via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
To: "help-gnu-emacs@gnu.org" <help-gnu-emacs@gnu.org>
Subject: backward-sexp throws scan-error "Unbalanced parentheses", but forward-sexp works
Date: Wed, 12 Jan 2022 16:49:23 +0000	[thread overview]
Message-ID: <ctJk85KpnHjxl522rEdKDyqw8cIaP4kF6vF3y-etrhtlQzfKYelTTgRSV4drCqjw9MeZTscAyM9uFdBIyHNllCKAhI94PqClO385VoU2DPE=@protonmail.com> (raw)

I sometimes run into the situation with huge elisp lists, that I cannot use backward-sexp, because it throws an error, but forward-sexp works on the same list. Then, after a while it fixes itself without changing the buffer and backwards-sexp works too. I suspect scrolling through the file fixes it, so it might be connected to fontification? Though it's just a guess, I don't see how they could be related.

Is there a known situation when the same elisp list can be navigated forward, but not backward?

I'm on Emacs 27.1. Was there a related bug fixed in 28?

I cannot yet replicate the problem knowingly, it just occurs every once in a while.

             reply	other threads:[~2022-01-12 16:49 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-12 16:49 ndame via Users list for the GNU Emacs text editor [this message]
2022-01-12 17:33 ` backward-sexp throws scan-error "Unbalanced parentheses", but forward-sexp works ndame via Users list for the GNU Emacs text editor
2022-01-12 21:06   ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-01-13  5:40 ` ndame via Users list for the GNU Emacs text editor
2022-01-13  5:54   ` ndame via Users list for the GNU Emacs text editor
2022-01-13  6:23     ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-01-13  9:04     ` ndame via Users list for the GNU Emacs text editor
2022-01-19 20:47       ` ndame
2022-01-19 20:52         ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-01-19 20:57         ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-01-19 21:30         ` ndame
2022-01-19 23:44           ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-01-20  4:47           ` ndame
2022-01-20 17:20             ` Stefan Monnier via Users list for the GNU Emacs text editor

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