Hi,

On  1 December 2023 at 01:50 +01, Dmitry Gutov <dmitry@gutov.dev> wrote:
> On 30/11/2023 01:21, Christophe TROESTLER wrote:
>> +         (prefix (buffer-substring-no-properties beg (min (+ beg 3) end)))
>> +         (face (if (string-equal "///" prefix)
>
> It'll probably be faster overall to use save-excursion and looking-at
> instead of creating a substring.

Thanks for your feedback. I did dome tests and the two are comparable (on Emacs 29.1) but here is a version that uses your suggestion.

Best,
C.