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bug#37659: rx additions: anychar, unmatchable, unordered-or
From: |
Drew Adams |
Subject: |
bug#37659: rx additions: anychar, unmatchable, unordered-or |
Date: |
Thu, 24 Oct 2019 07:32:59 -0700 (PDT) |
> > Is there an identifiable subset of rx features ... that map
> > (even if not one-to-one) to regexp syntax components?
>
> C-h f rx
>
> (syntax SYNTAX) Match a character with syntax SYNTAX, being one of:
> whitespace, punctuation, word, symbol, open-parenthesis,
> close-parenthesis, expression-prefix, string-quote,
> paired-delimiter, escape, character-quote, comment-start,
> comment-end, string-delimiter, comment-delimiter
Yes, that's fine for char syntax classes. It's
good that their correspondences are listed.
But for, say, `line-start' (aka `bol') there is a
verbal description but no mention of the Elisp
regexp syntax that corresponds:
‘line-start’, ‘bol’
matches the empty string, but only at the
beginning of a line in the text being matched
That's the kind of thing I was suggesting. It would
be helpful, I think, to mention (somewhere) that the
regexp syntax for this is "^".
Same thing for the other constructs (`string-start'
and all the rest).
I'm using Emacs 26.3. I didn't find anything beyond
the doc string - nothing in the Emacs or Elisp manual
(which is OK).
- bug#37659: Mattias Engdegård <mattiase <at> acm.org>, (continued)
- bug#37659: Mattias Engdegård <mattiase <at> acm.org>, Mattias Engdegård, 2019/10/13
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Mattias Engdegård, 2019/10/22
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Robert Pluim, 2019/10/22
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Paul Eggert, 2019/10/22
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Mattias Engdegård, 2019/10/23
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Paul Eggert, 2019/10/23
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Drew Adams, 2019/10/23
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Mattias Engdegård, 2019/10/24
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Drew Adams, 2019/10/24
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Phil Sainty, 2019/10/24
- bug#37659: rx additions: anychar, unmatchable, unordered-or,
Drew Adams <=
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Mattias Engdegård, 2019/10/24
- bug#37659: rx additions: anychar, unmatchable, unordered-or, Mattias Engdegård, 2019/10/27