bug#56113: [PATCH] * lisp/mail/mail-extr.el: only set fundamental-mode if unset

[Kevin Brubeck Unhammer]

Hi,

I noticed that opening groups with lots of unread messages in Gnus was
quite slow; profile shows that because I (bbdb-insinuate-gnus), it runs
mail-extract-address-components on them all and that function does

(with-current-buffer (get-buffer-create …)
    (fundamental-mode)
    …)

for every mail. Apparently (fundamental-mode) is slow since I use
evil-mode – so evil-mode could be faster, but also it seems unnecessary
to call fundamental-mode on fresh buffers? In any case, the attached
patch makes opening summaries 10x faster for people like me on
gnus+bbdb+evil.


best regards,
Kevin Brubeck Unhammer

(I have signed the copyright papers, still in the same job.)

0001-lisp-mail-mail-extr.el-only-set-fundamental-mode-if-.patch
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