[Python-ideas] Add \e escape code

[Serhiy Storchaka]

11.06.13 23:21, M.-A. Lemburg написав(ла):
> I'm not saying that it's useful to rely on Python's behavior,
> only that any such change has the potential to break perfectly
> working code.
>
> The last time we changed the escape code was for the introduction
> of Unicode string literals. That was 13 years ago. And we carefully
> checked what other languages were using for Unicode at the time.

Note that in the same time \u means "Titlecase next character" and \U 
means "Uppercase till \E" in Perl. "Conforming with other languages" 
argument is not very suitable in this particular case.

I'm -0.5. On one hand, I'm not worrying about backward compatibility, -- 
behavior of \e is not promised once for all, and there are no good 
reasons to use it (unlikely to backslashing non-letters). On other 
hands, it adds complexity (look at mess of dozens special escapes in 
Perl), the range of applications for this feature is enough narrow, and 
there are good alternatives (\x1b for shortness and \N{ESCAPE} for 
mnemonicity).