GNU bug report logs - #30813
26.0.91; flyspell does not recheck after transpose-chars

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From: Aaron Jensen <aaronjensen <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 30813 <at> debbugs.gnu.org
Subject: bug#30813: 26.0.91; flyspell does not recheck after transpose-chars
Date: Tue, 13 Mar 2018 22:17:14 -0700

On Tue, Mar 13, 2018 at 9:56 PM, Aaron Jensen <aaronjensen <at> gmail.com> wrote:
> Upon some inspection, it seems flyspell is meant to be set up to do
> this already. See `flyspell-check-pre-word-p', which returns nil in
> this scenario. Perhaps it can be expanded to handle this scenario.

For posterity, this works:

  (defun aj/flyspell-transpose-check ()
    (with-local-quit
      (when (and (eq this-command 'transpose-chars)
                 flyspell-pre-point)
        (save-excursion
          (goto-char (- flyspell-pre-point 1))
          (flyspell-word)))))

  (advice-add 'flyspell-post-command-hook :before #'aj/flyspell-transpose-check)

I'd be happy to include offer a patch for something like this, but I'm
not sure if there's a better way and/or if it's nasty to hard-code a
command like this.

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