From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: buffer.c/buffer.h: How to add new buffer-local variables?
Date: Sun, 31 Mar 2019 16:02:49 -0400 [thread overview]
Message-ID: <jwv36n2zuf2.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: m28swvypgc.wl%esq@lawlist.com
> if (!NILP (BVAR (XBUFFER (w->contents), crosshairs))) ...
Buffer-local variables are appropriate in the `struct buffer` when it's
likely that most buffers will have their own setting for it.
For variables that are likely to be used only in some particular
buffers, or only under some particular circumstances, it can make a lot
more sense to declare them as global variables and then rely on the
Elisp side using `make-local-variable` or `make-variable-buffer-local`,
so you don't pay for that slot in every buffer even tho it's almost
never used.
Stefan
next prev parent reply other threads:[~2019-03-31 20:02 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-31 16:32 buffer.c/buffer.h: How to add new buffer-local variables? Keith David Bershatsky
2019-03-31 20:02 ` Stefan Monnier [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-04-09 3:49 Keith David Bershatsky
2019-04-09 0:48 Keith David Bershatsky
2019-04-09 0:40 Keith David Bershatsky
2019-04-08 8:03 Keith David Bershatsky
2019-04-08 9:37 ` Eli Zaretskii
2019-04-08 15:04 ` Eli Zaretskii
2019-04-08 17:31 ` Andreas Schwab
2019-04-08 17:43 ` Eli Zaretskii
2019-04-08 18:33 ` Stefan Monnier
2019-04-08 20:07 ` Paul Eggert
2019-04-08 22:19 ` Michael Welsh Duggan
2019-04-08 23:06 ` Paul Eggert
2019-04-09 6:13 ` Eli Zaretskii
2019-04-08 4:34 Keith David Bershatsky
2019-04-07 2:50 Keith David Bershatsky
2019-04-07 15:48 ` Eli Zaretskii
2019-04-08 5:23 ` Paul Eggert
2019-04-04 18:57 Keith David Bershatsky
2019-04-04 19:29 ` Eli Zaretskii
2019-04-01 7:43 Keith David Bershatsky
2019-03-31 9:03 Keith David Bershatsky
2019-03-30 23:19 Keith David Bershatsky
2019-03-31 2:37 ` Eli Zaretskii
2019-03-31 3:49 ` Eli Zaretskii
2019-03-31 9:42 ` Andreas Schwab
2019-03-31 10:06 ` Eli Zaretskii
2019-03-31 11:41 ` Andreas Schwab
2019-03-31 15:10 ` Eli Zaretskii
2019-04-02 16:18 ` Eli Zaretskii
2019-04-02 18:46 ` Daniel Colascione
2019-04-03 17:43 ` Eli Zaretskii
2019-03-31 12:22 ` Alan Mackenzie
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