On Saturday, November 5th, 2022 at 05:24, Eli Zaretskii <eliz@gnu.org> wrote:

> I suggest an example of an escape sequence here, ideally from 2 or
> more programming languages.

Example added, but not sure about a second programming language. Isn't it basically the same for most programming languages?

> It is better to have the parent face font-lock-punctuation-face
> defined before it is used.

Done. BTW I see that font-lock-regexp-grouping-{backslash,construct}
do not have related variables like the rest of the faces. Why is that?