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From: Hans Hagen <pragma@wxs.nl>
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Subject: Re: Re[2]: Active urls?
Date: Thu, 31 May 2001 16:44:02 +0200
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At 12:46 PM 5/31/01 +0200, you wrote:
>
>Thursday, May 31, 2001 Hans Hagen wrote:
>
>HH> At 05:03 PM 5/30/01 +0200, Giuseppe Bilotta wrote:
>>>Hello,
>>>
>>>I tend to use/give lots of URL references in my document. I
>>>``recently'' discovered the full power of \useurl (even if I'm
>>>still not sure about the three-entries syntax), but I'd like to
>>>know if it is possible to make URLs active without resorting to
>>>\from[...], that is: is there a setup option that allows \url[...]
>>>to give an active hyperling?
> 
>HH> probably something: 
>
>HH> \let\normalurl\url
>
>HH> \def\url[#1]{\useurl[dummy][#1]\normalurl[dummy]}
>
>Uh ... that would let \url "merge" the functionality of \useurl
>and \url, but that's not what I want. The problem is that if I
>do:
>
>\useurl[whatever][this.net.address]
>
>\url[whatever]
>
>then \url[whatever] gives this.net.address, but it's not active,
>while \from[whatever] gives this.net.address, active.
>
>\let\url=\from does not work. Any ideas?

well, i lack the time to look into it more depply, but you probably end up
with something hackery like: 

\setupinteraction[state=start]

\useurl [abc] [a.b.c]

\let\normalurl\url \unprotected \unexpanded\def\url[#1]%
  {\begingroup
   \let\url\normalurl
   \doifdefinedelse{\v!file:::#1}
     {\from[#1]}
     {\scantokens{\unprotect\useurl[\s!dummy][#1]\protect}%
      \from[\s!dummy]}%
   \endgroup}

\starttext

test \url[a.b.c] test \from[abc]

\stoptext

as said, too hackery, so why not change the \url's into \from's? 

Hans
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                                  Hans Hagen | PRAGMA ADE | pragma@wxs.nl
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