From: Spencer Baugh <sbaugh@catern.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 48264@debbugs.gnu.org
Subject: bug#48264: [PATCH v3 03/15] Add and use BUFFER_DEFAULT_VALUE_P
Date: Fri, 07 May 2021 08:49:59 -0400 [thread overview]
Message-ID: <87tuner9mw.fsf@catern.com> (raw)
In-Reply-To: <83czu3c88w.fsf@gnu.org>
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Spencer Baugh <sbaugh@catern.com>
>> Date: Thu, 6 May 2021 17:33:34 -0400
>> Cc: Spencer Baugh <sbaugh@catern.com>
>>
>> This makes the code more clear and allows us to more easily change how
>> this property is determined.
>
> Does it? Can you explain why you think so? It looks like we are
> replacing clear code with an equally clear different code.
Well, "if (idx > 0)" as a conditional requires a fair bit of digging in
the implementation of DEFVAR_PER_BUFFER variables to understand. On the
other hand, "if (BUFFER_DEFAULT_VALUE_P (offset))" is immediately clear:
We're checking if this variable has a default value.
By hiding the implementation detail of "idx", we both remove the need to
know what idx is, and make it easier to later change the implementation
(as a later commit does).
next prev parent reply other threads:[~2021-05-07 12:49 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-06 20:24 bug#48264: 28.0.50; Changing the default for DEFVAR_PER_BUFFER variables takes O(#buffers) time Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 00/15] Speeding up setting the default for DEFVAR_PER_BUFFER vars Spencer Baugh
2021-05-07 11:05 ` Eli Zaretskii
2021-05-08 2:08 ` bug#48264: [PATCH v4 " Spencer Baugh
2021-05-08 2:08 ` Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 01/14] Stop checking the constant default for enable_multibyte_characters Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 02/14] Take offset not idx in PER_BUFFER_VALUE_P Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 03/14] Add and use BVAR_HAS_DEFAULT_VALUE_P Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 04/14] Combine unnecessarily separate loops in buffer.c Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 05/14] Add and use KILL_PER_BUFFER_VALUE Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 06/14] Rearrange set_internal for buffer forwarded symbols Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 07/14] Use BVAR_OR_DEFAULT for per-buffer vars with defaults Spencer Baugh
2021-05-08 2:08 ` bug#48264: [PATCH v4 08/14] Remove unnecessary Qunbound check Spencer Baugh
2021-05-08 2:09 ` bug#48264: [PATCH v4 09/14] Get rid of buffer_permanent_local_flags array Spencer Baugh
2021-05-08 2:09 ` bug#48264: [PATCH v4 10/14] Delete SET_PER_BUFFER_VALUE_P and buffer local_flags field Spencer Baugh
2021-05-08 2:09 ` bug#48264: [PATCH v4 11/14] Set buffer_defaults fields without a default to Qunbound Spencer Baugh
2021-05-08 2:09 ` bug#48264: [PATCH v4 12/14] Assert that PER_BUFFER_IDX for Lisp variables is not 0 Spencer Baugh
2021-05-08 2:09 ` bug#48264: [PATCH v4 13/14] Remove PER_BUFFER_IDX and buffer_local_flags Spencer Baugh
2021-05-08 2:09 ` bug#48264: [PATCH v4 14/14] Add and use BVAR_FIELD macros Spencer Baugh
2021-05-08 18:06 ` bug#48264: [PATCH v4 00/15] Speeding up setting the default for DEFVAR_PER_BUFFER vars Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-06 21:33 ` bug#48264: [PATCH v3 01/15] Stop checking the constant default for enable_multibyte_characters Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 02/15] Take offset not idx in PER_BUFFER_VALUE_P Spencer Baugh
2021-05-07 7:27 ` Eli Zaretskii
2021-05-07 12:45 ` Spencer Baugh
2021-05-07 12:54 ` Eli Zaretskii
2021-05-06 21:33 ` bug#48264: [PATCH v3 03/15] Add and use BUFFER_DEFAULT_VALUE_P Spencer Baugh
2021-05-07 7:29 ` Eli Zaretskii
2021-05-07 12:49 ` Spencer Baugh [this message]
2021-05-07 12:58 ` Eli Zaretskii
2021-05-07 13:38 ` Spencer Baugh
2021-05-07 13:42 ` Eli Zaretskii
2021-05-07 14:30 ` Spencer Baugh
2021-05-07 14:39 ` Eli Zaretskii
2021-05-06 21:33 ` bug#48264: [PATCH v3 04/15] Combine unnecessarily separate loops in buffer.c Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 05/15] Add and use KILL_PER_BUFFER_VALUE Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 06/15] Rearrange set_internal for buffer forwarded symbols Spencer Baugh
2021-05-07 10:45 ` Eli Zaretskii
2021-05-07 14:26 ` Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 07/15] Add BVAR_OR_DEFAULT macro as a stub Spencer Baugh
2021-05-07 10:54 ` Eli Zaretskii
2021-05-07 13:05 ` Spencer Baugh
2021-05-07 13:12 ` Eli Zaretskii
2021-05-07 13:24 ` Spencer Baugh
2021-05-07 13:32 ` Eli Zaretskii
2021-05-06 21:33 ` bug#48264: [PATCH v3 08/15] Set non-buffer-local BVARs to Qunbound Spencer Baugh
2021-05-07 10:37 ` Eli Zaretskii
2021-05-07 12:54 ` Spencer Baugh
2021-05-07 13:00 ` Eli Zaretskii
2021-05-06 21:33 ` bug#48264: [PATCH v3 09/15] Remove unnecessary Qunbound check Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 10/15] Get rid of buffer_permanent_local_flags array Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 11/15] Delete SET_PER_BUFFER_VALUE_P and buffer local_flags field Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 12/15] Set buffer_defaults fields without a default to Qunbound Spencer Baugh
2021-05-07 10:42 ` Eli Zaretskii
2021-05-07 13:20 ` Spencer Baugh
2021-05-07 13:29 ` Eli Zaretskii
2021-05-07 14:15 ` Spencer Baugh
2021-05-07 14:30 ` Eli Zaretskii
2021-05-07 21:35 ` Spencer Baugh
2021-05-08 6:40 ` Eli Zaretskii
2021-05-08 13:22 ` Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 13/15] Assert that PER_BUFFER_IDX for Lisp variables is not 0 Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 14/15] Remove PER_BUFFER_IDX and buffer_local_flags Spencer Baugh
2021-05-06 21:33 ` bug#48264: [PATCH v3 15/15] Add and use BVAR_FIELD macros Spencer Baugh
2021-05-07 11:03 ` Eli Zaretskii
2021-05-07 12:59 ` Spencer Baugh
2021-05-07 13:08 ` Eli Zaretskii
2021-05-07 21:43 ` Spencer Baugh
2021-05-08 6:55 ` Eli Zaretskii
2021-05-08 13:35 ` Spencer Baugh
2021-05-08 13:58 ` Eli Zaretskii
2021-05-08 17:13 ` Spencer Baugh
2021-05-08 19:03 ` Spencer Baugh
2021-05-09 8:10 ` Eli Zaretskii
2021-05-09 17:09 ` Spencer Baugh
2021-05-09 17:09 ` bug#48264: [PATCH 1/2] Take buffer field name in DEFVAR_PER_BUFFER Spencer Baugh
2021-05-09 17:09 ` bug#48264: [PATCH 2/2] Add compile-time check that BVAR is used correctly Spencer Baugh
2021-05-09 18:09 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-09 18:29 ` Eli Zaretskii
2021-05-10 14:09 ` Spencer Baugh
2022-07-01 12:18 ` bug#48264: 28.0.50; Changing the default for DEFVAR_PER_BUFFER variables takes O(#buffers) time Lars Ingebrigtsen
2022-07-01 18:49 ` Spencer Baugh
2022-07-02 12:00 ` Lars Ingebrigtsen
2022-08-02 11:11 ` Lars Ingebrigtsen
2021-05-09 10:08 ` bug#48264: [PATCH v3 15/15] Add and use BVAR_FIELD macros Lars Ingebrigtsen
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