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Re: How to know is a buffer is a temporary one?
From: |
Stefan Monnier |
Subject: |
Re: How to know is a buffer is a temporary one? |
Date: |
Mon, 29 Jul 2013 17:24:51 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
>> Maybe you're better off trying to define "useful buffer" for your
>> particular case. E.g. maybe check `buffer-file-name'.
> Then a version checking with a regexp seems slightly more efficient
> (1.19 s vs 1.14 s) than the one checking the name with a substring:
> ;; (while (< i 1000)
> ;; (message "%s" i)
> ;; (if (equal (substring (buffer-name) 0 2) " *")
> ;; (message "this is a temp buffer")
> ;; (message "this is not a temp buffer"))
> ;; (setq i (+ i 1)))
should be
(while (< i 1000)
(message "%s" i)
(message (if (eq (aref (buffer-name) 0) ?\s)
"this is a temp buffer"
"this is not a temp buffer"))
(setq i (+ i 1)))
Note that some buffers that start with " *" are shown to the user.
So, the notion of temporary/internal depends on the particular situation
(which is why it's not formally defined). In some cases
buffer-file-name is a good test, in other cases (get-buffer-window <buf>
t) is a better test.
Sometimes, testing (listp buffer-undo-list) may also be a good idea.
Stefan
- How to know is a buffer is a temporary one?, Sebastien Vauban, 2013/07/29
- Re: How to know is a buffer is a temporary one?, Thorsten Jolitz, 2013/07/29
- Re: How to know is a buffer is a temporary one?, Stefan Monnier, 2013/07/29
- Message not available
- Re: How to know is a buffer is a temporary one?, Sebastien Vauban, 2013/07/29
- Re: How to know is a buffer is a temporary one?, Sebastien Vauban, 2013/07/29
- RE: How to know is a buffer is a temporary one?, Drew Adams, 2013/07/29
- Re: How to know is a buffer is a temporary one?,
Stefan Monnier <=
- Message not available
- Re: How to know is a buffer is a temporary one?, Sebastien Vauban, 2013/07/30
- Re: How to know is a buffer is a temporary one?, Stefan Monnier, 2013/07/30
- Message not available
- Re: How to know is a buffer is a temporary one?, Sebastien Vauban, 2013/07/30