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bug#70589: [PATCH] Refine the Custom type of generated '*-modes' options
From: |
Stefan Monnier |
Subject: |
bug#70589: [PATCH] Refine the Custom type of generated '*-modes' options |
Date: |
Sat, 27 Apr 2024 10:33:04 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
>> > This makes it easier for users to customize generated '*-modes' options,
>> > such as 'global-completion-preview-modes', via the Custom interface.
>>
>> This kind of discussion is not useful with Stefan (CC'ed) on board.
> ^^^^
> Oops, I meant "without", of course. Sorry.
🙂
FWIW, the latest patch looks fine to me, but really this is Lars's code,
so you don't need me "on board", really.
Also, while I'm here: I think part of the "problem" is in the semantics:
anything after a t or nil is ignored, which is hard to explain via
a "single small line" of text.
We could imagine extending the semantics so that you can use `((not a)
. t)` instead, in which case this meaning of `t` can be shared with the
"main one" (instead of having two `t` cases and two `nil` cases) in the
sense that the syntax would be:
PRED can be:
t Always accept
nil Always decline
((not . MODES) . PRED) Decline if in MODES, otherwise like PRED
(MODE . PRED) Accept if in MODE, otherwise like PRED
but then we couldn't use the `repeat` Custom type and instead we'd have
to implement an ad-hoc type for it, I believe.
Stefan
bug#70589: [PATCH] Refine the Custom type of generated '*-modes' options, Eli Zaretskii, 2024/04/26