Re: Escape syntax in docstrings

[Robert Pluim]

>>>>> On Thu, 23 Mar 2023 23:02:08 +0100, Mattias Engdegård 
>>>>> <mattias.engdegard@gmail.com> said:

    Mattias> (That Emacs doesn't reject undefined character escape sequences 
such
    Mattias> as "\y" is not only a constant source of bugs, it also makes it
    Mattias> difficult for us to add new escape sequences without worrying about
    Mattias> breaking some (misguided) code. Almost every other language 
complain
    Mattias> about this.)

How strict do you want to be? Emacsʼ own source code has some decidely
non-supported escape sequences, especially when specifying characters
using the `?\c' syntax. I guess a first step could be to add a
byte-compile warning for those analagous to
`lread--unescaped-character-literals', and then maybe expand it to
strings as well.

Robert
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