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I wanted to add a link containing "A*" to an answer. It had the link at the bottom and I wondered why he didn't link to A* normally. But when I tried it wouldn't show up as a URL in the preview, so I guess that's why it was added as plain text in the answer instead.

This is the link: http://en.wikipedia.org/wiki/A*_search_algorithm.

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What about this link: stackoverflow.com/a/13484159/32453 should I start a new question post? – rogerdpack Nov 21 '12 at 17:14
    
See also: meta.webapps.stackexchange.com/q/2254/24166 – unor Apr 8 '13 at 18:00
up vote 2 down vote accepted

It's like magic!

A* Search

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Thanks for wikiing it (is that a word?) so I could see the magic. – Nifle Sep 9 '09 at 0:03
    
It seemed the easiest way :-) – John Fouhy Sep 9 '09 at 0:05

This works OK so long as you don't try to do it "raw":

http://en.wikipedia.org/wiki/A*_search_algorithm

won't work, whereas

[link][1]

  [1]: http://en.wikipedia.org/wiki/A*_search_algorithm

or

[link](http://en.wikipedia.org/wiki/A*_search_algorithm)

will: link, link.

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In comments, the third example does not work: link versus the version with %2A, link. See Star in link(s) in comments is removed. – Arjan Dec 11 '11 at 12:53
    
so is this a bug or not? it seems like it should parse a star as a continuation of the url... stackoverflow.com/a/1547940/32453 – rogerdpack Nov 21 '12 at 17:15

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