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Re: isolating history with buffer-local variables
From: |
Stefan Monnier |
Subject: |
Re: isolating history with buffer-local variables |
Date: |
Wed, 13 May 2015 17:39:24 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
Thanks. I think this functionality is important and should largely be
activated automatically when visiting encrypted files (not sure which
other files/buffers would warrant such behavior).
So I'm happy to see you work on this, and I encourage you try and make
it work well, and contribute your code so we can include it directly
in Emacs.
> (if (symbol-value private-mode)
`private-mode' will normally have value either t or nil, and the
symbol-value of nil is nil and the symbol-value of t is t, so the above
is better written as "(if private-mode".
> (setq private-variables '( ;; data to isolate
> minibuffer-history ;; <-- not working
> command-history ;; ok
> extended-command-history ;; <-- not working
> string-rectangle-history ;; <-- not working
> query-replace-history ;; ok
> search-ring ;; ok
> regexp-search-ring ;; ok
> kill-ring ;; ok
> backup-inhibited ;; ok
> auto-save-timeout)) ;; ok
This should probably be moved out to a defvar.
> (setq backup-inhibited t) ;; locally disable backups
> (setq auto-save-timeout 0)) ;; locally idle auto-saves
For encrypted files (accessed via EPA), the above should be correctly
handled already (either by preventing autosave/backups or by keeping
those files encrypted just like the main file). If you find they're
not, please file it as a bug.
> All the local auto-save/backup vars, local ring vars, and local
> query-replace-history and command-history vars work as intended. But
> minibuffer-history, extended-command-history and
> string-rectangle-history do not. The buffer-local vars for these are
> made as expected, but they are ignored and histories continue to
> accumulate in the global variables.
I think Pascal has the right explanation for that.
> Any idea why? Anyone have suggestions for a different approach or
> a way around the problem?
You'll probably need to hack read-from-minibuffer (e.g. with an advice)
so as to redirect the history variable to another variable, or to
cleanup the variable after the fact.
Stefan
- isolating history with buffer-local variables, Nick Helm, 2015/05/12
- Re: isolating history with buffer-local variables,
Stefan Monnier <=
- Re: isolating history with buffer-local variables, Nick Helm, 2015/05/14
- Re: isolating history with buffer-local variables, Stefan Monnier, 2015/05/15
- Re: isolating history with buffer-local variables, Nick Helm, 2015/05/20
- Re: isolating history with buffer-local variables, Stefan Monnier, 2015/05/20
- Re: isolating history with buffer-local variables, Stefan Monnier, 2015/05/24
- Re: isolating history with buffer-local variables, Nick Helm, 2015/05/24
- Message not available
- Re: isolating history with buffer-local variables, Pascal J. Bourguignon, 2015/05/24
- Re: isolating history with buffer-local variables, Nick Helm, 2015/05/24