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After trying to link to rubluar.com, I've got the error message:

 Links to http://http://rubular.com/r/... are not allowed.

After some further investigation, I've found that using the tool to automatically generate the markdown for my link has changed

http://rubular.com/r/KDEEwTIToq

to

http://%20http://rubular.com/r/KDEEwTIToq

removing the %20http:// manually allowed the link to work.

enter image description here

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3  
refiddle.com (Here is a regex fiddle you can use while waiting for a fix) By the way you have put 2 times http:// and that might cause the problem. –  Hugo Dozois Apr 15 '13 at 17:39
1  
@HugoDozois that makes me want to edit my question –  Sam I am Apr 15 '13 at 17:44
    
i reproduced the error before finishing my edit but i can't anymore –  Sam I am Apr 15 '13 at 17:52
    
There were some change in the Markdown engine today, that might be related meta.stackexchange.com/questions/176537/… –  Hugo Dozois Apr 15 '13 at 18:04

1 Answer 1

That extra %20... can happen when you paste in a link with an extra space:

[example.com without extra space][1]

[example.com with space in front][2]


  [1]: http://example.com
  [2]: http://%20http://example.com

then you get the error message you saw:

Links to http:// http://example.com are not allowed
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