On Mon, Apr 11, 2022 at 07:40:29PM +0300, Eli Zaretskii wrote:
>> Date: Mon, 11 Apr 2022 18:19:42 +0200
>> From: Ergus <spacibba@aol.com>
>> Cc: emacs-devel@gnu.org
>>
>> On Mon, Apr 11, 2022 at 06:51:58PM +0300, Eli Zaretskii wrote:
>>
>> >The code should test whether another version of 'ctags' is already
>> >installed, and if so, that it isn't our 'ctags'.  _Then_ we could
>> >default to not installing our 'ctags'.  Your proposal doesn't make
>> >that test, so please add it.
>> >
>> >Thanks.
>> >
>> I do this tests like with mailutils and movemail:
>>
>> (ctags --version) >/dev/null 2>&1 || with_ctags=no
>>
>> Isn't this enough?
>
>No, because AFAIU this test will succeed also if the installed ctags
>is (an older version) of the program that came with (an older version)
>of Emacs.  You need to make sure the text emitted by --version does
>NOT include "GNU Emacs".
>
Now?