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Re: Raw strings (experimental patches inside)
From: |
Ivan Andrus |
Subject: |
Re: Raw strings (experimental patches inside) |
Date: |
Sat, 4 Aug 2012 16:38:02 +0200 |
On Aug 4, 2012, at 12:43 AM, Stefan Monnier wrote:
>> When I type a regex I'm always annoyed by the amount of escaping
>> I have to do. I've always wished Emacs Lisp had raw strings
>> ie. a syntax to type litteral text without interpretation.
>
> AFAIK, the only real use-case is indeed regexp, and for them a better
> solution would be to not escape the parentheses at all.
That doesn't handle the horror that is searching for backslashes...
>> I've made 2 patch for the reader (src/lread.c). There are proofs of
>> concepts, they should work on correct input but don't expect much.
>
> Adapting the reader is only one part, since you also need to adapt the
> elisp-mode syntax-tables accordingly (and check that the edebug reader
> doesn't need matching changes).
>
> As mentioned above, I'm not too excited by the idea of raw strings and
> would prefer solving the underlying root cause of dissatisfaction.
> Actually, we already have such a thing with `rx', but admittedly,
> a strings representation of regexps tends to be more concise, so maybe
> we also need some other trick like maybe a (re-escape "(?:foo)") which
> would return "\\(?:foo\\)".
It would also be nice to have a function which takes a string representation
and converts it to an `rx' representation, which I couldn't find in rx when I
looked. I would like to convert some old libraries to use rx, but I'd rather
not have to retype them all with the possibility of making mistakes etc.
I think pcre2el [1] has such a thing, though I haven't tried it yet. Is that
on your radar for things to potentially include in Emacs?
-Ivan
[1] https://github.com/joddie/pcre2el
- Re: Raw strings (experimental patches inside), (continued)
- Re: Raw strings (experimental patches inside), Aurélien Aptel, 2012/08/03
- Re: Raw strings (experimental patches inside), Lars Brinkhoff, 2012/08/05
- Re: Raw strings (experimental patches inside), Stefan Monnier, 2012/08/05
- Re: Raw strings (experimental patches inside), Pascal J. Bourguignon, 2012/08/06
- Re: Raw strings (experimental patches inside), Stefan Monnier, 2012/08/06
- Re: Raw strings (experimental patches inside), Pascal J. Bourguignon, 2012/08/06
Re: Raw strings (experimental patches inside), Stefan Monnier, 2012/08/03
- Re: Raw strings (experimental patches inside),
Ivan Andrus <=
- Re: Raw strings (experimental patches inside), Vr Rm, 2012/08/09
- Re: Raw strings (experimental patches inside), Stephen J. Turnbull, 2012/08/10
- Re: Raw strings (experimental patches inside), Stefan Monnier, 2012/08/10
- Re: Raw strings (experimental patches inside), Stephen J. Turnbull, 2012/08/10
- Re: Raw strings (experimental patches inside), Stefan Monnier, 2012/08/10
- Re: Raw strings (experimental patches inside), Stephen J. Turnbull, 2012/08/11
- Re: Raw strings (experimental patches inside), Dmitri Paduchikh, 2012/08/11