From: Gregory Heytings via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: 36006@debbugs.gnu.org
Subject: bug#36006: electric-pair-mode fails to balance in certain cases
Date: Thu, 27 Aug 2020 19:08:10 +0000 [thread overview]
Message-ID: <alpine.NEB.2.22.394.2008272047190453.21601@sdf.lonestar.org> (raw)
In-Reply-To: <87woi80yfw.fsf@gmail.com>
I don't know if the following information is useful, but on the "<div>"
example given by the OP, the difference between Emacs 26 and 27 is that,
in `electric-pair--balance-info', in the expression
(eq (char-after pos) (electric-pair--with-uncached-syntax (table) (matching-paren (char-before (scan-sexps (point) 1)))))
the second argument fails with "Unbalanced parentheses" in Emacs 27, which
means that the whole expression fails, whereas in Emacs 26 both arguments
evaluate to 60 and the expression returns t.
Because of that `electric-pair--balance-info' returns ((nil . 60) nil .
60) in Emacs 27, instead of ((t . 60) t) in Emacs 26.
Because of that `electric-pair-skip-if-helps-balance' and
`electric-pair-default-skip-self' return nil in Emacs 27, instead of t in
Emacs 26.
Because of that `electric-pair-post-self-insert-function', called by
`post-self-insert-hook', does not skip the insertion of the right angle
bracket character.
The following snippet evaluates to "60" on both Emacs 26 and 27, so I
don't understand where the "Unbalanced parentheses" error could come from.
----
<div>
(progn
(electric-pair-mode 1)
(html-mode)
(let ((table (syntax-table))) (electric-pair--with-uncached-syntax (table) (matching-paren (char-before (scan-sexps 0 1))))))
----
Gregory
next prev parent reply other threads:[~2020-08-27 19:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-30 15:11 bug#36006: electric-pair-mode fails to balance in certain cases Dario Gjorgjevski
2019-05-30 17:36 ` npostavs
2019-05-30 21:51 ` Dario Gjorgjevski
2019-06-06 23:39 ` Noam Postavsky
2019-11-22 12:28 ` Dario Gjorgjevski
2020-08-27 19:08 ` Gregory Heytings via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2020-08-27 21:38 ` Gregory Heytings via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-08-28 8:00 ` Gregory Heytings via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-10 7:50 ` Lars Ingebrigtsen
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