From: Keith David Bershatsky <esq@lawlist.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Alan Mackenzie <acm@muc.de>, Eli Zaretskii <eliz@gnu.org>,
Andreas Schwab <schwab@linux-m68k.org>,
emacs-devel@gnu.org
Subject: Re: buffer.c/buffer.h: How to add new buffer-local variables?
Date: Mon, 01 Apr 2019 00:43:42 -0700 [thread overview]
Message-ID: <m2k1gecgr5.wl%esq@lawlist.com> (raw)
Thank you, Stefan, for the insight regarding how to handle this particular issue. Greatly appreciated!
Keith
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> From: Stefan Monnier
> Subject: Re: buffer.c/buffer.h: How to add new buffer-local variables?
> Date: Sun, 31 Mar 2019 16:02:49 -0400
>
>> 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 reply other threads:[~2019-04-01 7:43 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-01 7:43 Keith David Bershatsky [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-04-09 3:49 buffer.c/buffer.h: How to add new buffer-local variables? 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
2019-03-31 16:32 Keith David Bershatsky
2019-03-31 20:02 ` Stefan Monnier
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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