* Persistent buffer local variables?
@ 2010-07-13 17:57 Elena
2010-07-14 7:45 ` Elena
0 siblings, 1 reply; 2+ messages in thread
From: Elena @ 2010-07-13 17:57 UTC (permalink / raw)
To: help-gnu-emacs
Hello,
I need to attach a some values to a buffer for later use. I have tried
using buffer local variables, but it seems they are forgotten as soon
as I switch major mode. How could I work around that? Here is my test
code:
(defvar my-var nil)
(make-variable-buffer-local 'my-var)
(defun my-set-var ()
(interactive)
(switch-to-buffer (get-buffer-create "*test*"))
(setq my-var "test")
;; (text-mode) ;; If I uncomment this line, variable is forgotten.
)
(defun my-show-var ()
(interactive)
(message "my-var is: %s" my-var))
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Persistent buffer local variables?
2010-07-13 17:57 Persistent buffer local variables? Elena
@ 2010-07-14 7:45 ` Elena
0 siblings, 0 replies; 2+ messages in thread
From: Elena @ 2010-07-14 7:45 UTC (permalink / raw)
To: help-gnu-emacs
According to the manual, this behavior is expected, since major modes
start by calling `kill-all-local-variables'. I needed to write:
(put 'my-var 'permanent-local t)
to keep the variable alive.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2010-07-13 17:57 Persistent buffer local variables? Elena
2010-07-14 7:45 ` Elena
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