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Re: master 6ebce84ff2b: Use t for non-nil default values in boolean defc
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From: |
Andreas Schwab |
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Subject: |
Re: master 6ebce84ff2b: Use t for non-nil default values in boolean defcustom declarations |
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Date: |
Sat, 29 Apr 2023 13:23:42 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) |
On Apr 29 2023, Michael Albinus wrote:
> Mattias Engdegård <mattiase@acm.org> writes:
>
> Hi Mattias,
>
>> Use t for non-nil default values in boolean defcustom declarations
>>
>> +(defcustom viper-ms-style-os-p
>> + (not (not (memq system-type '(ms-dos windows-nt))))
>
> I'm just curious. Is there an advantage in using the (not (not ...))
> pattern?
Logically, (not (null ...)) would fit better.
(not is just an alias of null, so both are the same, of course).
--
Andreas Schwab, schwab@linux-m68k.org
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