bug#63750: 30.0.50; tree-sitter: `treesit-language-source-alist' is not customisable

[Yuan Fu <casouri@gmail.com>]

> On May 29, 2023, at 7:40 AM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
>> From: Yuan Fu <casouri@gmail.com>
>> Date: Sun, 28 May 2023 15:51:05 -0700
>> Cc: mickey@masteringemacs.org,
>> 63750@debbugs.gnu.org
>> 
>> 
>> 
>>> On May 27, 2023, at 10:32 PM, Eli Zaretskii <eliz@gnu.org> wrote:
>>> 
>>>> From: Yuan Fu <casouri@gmail.com>
>>>> Date: Sat, 27 May 2023 16:12:18 -0700
>>>> Cc: Mickey Petersen <mickey@masteringemacs.org>,
>>>> 63750@debbugs.gnu.org
>>>> 
>>>>> However, I think we decided to make it so that each installation
>>>>> should update the value of the variable with the data of the grammar
>>>>> just installed.  I see that we don't actually do that -- Yuan, am I
>>>>> misremembering this?  If not, would you please add code to add to the
>>>>> variable's value the data of every grammar that is installed?
>>>> 
>>>> Sure. Does it need to be preserved across sessions (ie, use custom)? Or just add for the current session?
>>> 
>>> Only for the current session.  Users who want it preserved should do
>>> it themselves (I will add that to the doc string when the code which
>>> updates the variable is installed).
>> 
>> Done.
> 
> Thanks.  And I see that you have updated the doc string accordingly.

Glad my docstring worked out this time ;-)

Yuan