From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Clemente <n142857@gmail.com>
Subject: Re: radio links in middle of words.
Date: Thu, 10 Apr 2014 19:40:22 +0700
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To: Nicolas Goaziou <n.goaziou@gmail.com>
Cc: emacs-orgmode@gnu.org

>=20
> > Can't we break at non-letters? Not at non-=E2=80=9Eword-constituents=E2=
=80=9C, but at
> > non-letters. If emacs doesn't provide that concept, better build it.
>=20
> I don't know. Could you define precisely that concept?
>=20

  I propose: radio links should be delimited by characters that don't match=
 [:alpha:] in emacs' regular expression syntax.
  Letters (like: a=C3=A1=E6=9B=B8=C4=89) match, and delimiters (like: -'"/)=
 don't.

  Test it with:
: (string-match-p "[[:alpha:]]" "=C3=A1")
: (string-match-p "[[:alpha:]]" "=E6=9B=B8")
: (string-match-p "[[:alpha:]]" "=C4=89")

: (string-match-p "[[:alpha:]]" "'")
: (string-match-p "[[:alpha:]]" "-")

  And the opposite: check for non-letterness:
: (string-match-p "[^[:alpha:]]" "-")
: (string-match-p "[^[:alpha:]]" "=C3=A1")


  So a radio link with LINK_TEXT should not only be a match of the regexp "=
LINK_TEXT" but of "[^[:alpha:]]LINK_TEXT[^[:alpha:]]" (well, make it someth=
ing like "(^|non-letter)LINK_TEXT($|non-text)".

  I think that's better than the current solution and stills allows for rad=
io links which contain non-letters, like <<<o'clock>>>.
  What do you think?


Daniel