From: Tassilo Horn <tsdh@gnu.org>
To: Users of the GNU Emacs text editor <help-gnu-emacs@gnu.org>
Subject: My read-buffer-function doesn't work when called by switch-to-buffer
Date: Fri, 10 Mar 2023 22:10:29 +0100 [thread overview]
Message-ID: <875yb8nvvk.fsf@gnu.org> (raw)
Hi all,
I would like that switch-to-buffer also suggests recent files. Given
that it uses read-buffer which can be customized using a
read-buffer-function, I thought that should be easy. That's what I have
come up with:
--8<---------------cut here---------------start------------->8---
(defun th/read-buffer-or-recentf (prompt &optional
def require-match predicate)
(when-let ((result (completing-read
prompt
(completion-table-in-turn #'internal-complete-buffer
(completion-table-dynamic
(lambda (s) recentf-list)))
predicate require-match nil 'buffer-name-history def)))
(cond
((get-buffer result) result)
((file-exists-p result) (buffer-name (find-file-noselect result)))
(t result))))
(setq read-buffer-function #'th/read-buffer-or-recentf)
--8<---------------cut here---------------end--------------->8---
The function th/read-buffer-or-recentf works fine when called
standalone, i.e., when I evaluate
(th/read-buffer-or-recentf "test: ")
and type something which won't complete to an existing buffer, recent
files pop up as completion candidates. Yay!
However, when I do C-x b (switch-to-buffer), no matter what, recent
files are not provided as completion candidates. But edebug convinces
me that my function th/read-buffer-or-recentf is called. It just seems
that the same completing-read call behaves differently when called
directly and when being called by switch-to-buffer. Why is that and
what can I do against it?
Thanks,
Tassilo
next reply other threads:[~2023-03-10 21:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-10 21:10 Tassilo Horn [this message]
2023-03-11 0:32 ` My read-buffer-function doesn't work when called by switch-to-buffer Michael Heerdegen
2023-03-11 8:58 ` Tassilo Horn
2023-03-11 20:40 ` `when-let' (was: Re: My read-buffer-function doesn't work when called by switch-to-buffer) Emanuel Berg
2023-03-12 3:32 ` My read-buffer-function doesn't work when called by switch-to-buffer Michael Heerdegen
2023-03-12 18:51 ` Tassilo Horn
2023-03-13 0:32 ` Michael Heerdegen
2023-03-15 9:06 ` Tassilo Horn
2023-03-15 18:57 ` Michael Heerdegen
2023-03-16 9:18 ` Tassilo Horn
2023-03-16 16:59 ` Tassilo Horn
2023-03-16 23:46 ` Michael Heerdegen
2023-03-17 7:04 ` Tassilo Horn
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