GNU bug report logs - #43489
[PATCH] Don't signal scan-error when moving by sexp interactively

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From: Mattias Engdegård <mattiase <at> acm.org>
To: 43489 <at> debbugs.gnu.org
Subject: bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively
Date: Fri, 18 Sep 2020 13:31:16 +0200

[Message part 1 (text/plain, inline)]

When moving by sexp (C-M-f, C-M-u and so on) and point is already at a boundary preventing further movement, Emacs currently signals an internal error such as

 Scan error: "Containing expression ends prematurely", 5010, 5010

or

 Scan error: "Unbalanced parentheses", 5010, 1

which is unhelpful and rather looks as if something went wrong in the internal machinery.

The attached patch does away with this error when the commands are invoked interactively; programmatic use of the functions will get the scan-error just like before. There didn't seem to be much point in replacing the errors with new messages so the current version of the patch doesn't.

[0001-Don-t-signal-scan-error-when-moving-by-sexp-interact.patch (application/octet-stream, attachment)]

[Message part 3 (text/plain, inline)]

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