kc3-lang/md4c/test/permissive-www-autolinks.txt

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• Hash : 83047d3e
  Author :
  Date : 2019-05-07T22:24:29
  

  md_analyze_permissive_url_autolink: Improve. * Fix domain recognition so that it has to have at least two dot-delimited components. * Fix handling if parenthesis so that they have to form balanced pairs; i.e. the first ')' not having a preceding opener ends the path. Fixes #76.

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• test/permissive-www-autolinks.txt

• 
  # Permissive WWW Autolinks
  
  With the flag `MD_FLAG_PERMISSIVEWWWAUTOLINKS`, MD4C enables recognition of
  autolinks starting with `www.`, even if they do not exactly follow the syntax
  of autolink as specified in CommonMark specification.
  
  These do not have to be enclosed in `<` and `>`, and they even do not need
  any preceding scheme specification.
  
  The WWW autolink will be recognized when a valid domain is found.
  
  A valid domain consists of the text `www.`, followed by alphanumeric characters,
  nderscores (`_`), hyphens (`-`) and periods (`.`). There must be at least one
  period, and no underscores may be present in the last two segments of the domain.
  
  The scheme `http` will be inserted automatically:
  
  ```````````````````````````````` example
  www.commonmark.org
  .
  <p><a href="http://www.commonmark.org">www.commonmark.org</a></p>
  ````````````````````````````````
  
  After a valid domain, zero or more non-space non-`<` characters may follow:
  
  ```````````````````````````````` example
  Visit www.commonmark.org/help for more information.
  .
  <p>Visit <a href="http://www.commonmark.org/help">www.commonmark.org/help</a> for more information.</p>
  ````````````````````````````````
  
  We then apply extended autolink path validation as follows:
  
  Trailing punctuation (specifically, `?`, `!`, `.`, `,`, `:`, `*`, `_`, and `~`)
  will not be considered part of the autolink, though they may be included in the
  interior of the link:
  
  ```````````````````````````````` example
  Visit www.commonmark.org.
  
  Visit www.commonmark.org/a.b.
  .
  <p>Visit <a href="http://www.commonmark.org">www.commonmark.org</a>.</p>
  <p>Visit <a href="http://www.commonmark.org/a.b">www.commonmark.org/a.b</a>.</p>
  ````````````````````````````````
  
  When an autolink ends in `)`, we scan the entire autolink for the total number
  of parentheses.  If there is a greater number of closing parentheses than
  opening ones, we don't consider the last character part of the autolink, in
  order to facilitate including an autolink inside a parenthesis:
  
  ```````````````````````````````` example
  www.google.com/search?q=Markup+(business)
  
  (www.google.com/search?q=Markup+(business))
  .
  <p><a href="http://www.google.com/search?q=Markup+(business)">www.google.com/search?q=Markup+(business)</a></p>
  <p>(<a href="http://www.google.com/search?q=Markup+(business)">www.google.com/search?q=Markup+(business)</a>)</p>
  ````````````````````````````````
  
  This check is only done when the link ends in a closing parentheses `)`, so if
  the only parentheses are in the interior of the autolink, no special rules are
  applied:
  
  ```````````````````````````````` example
  www.google.com/search?q=(business)+ok
  .
  <p><a href="http://www.google.com/search?q=(business)+ok">www.google.com/search?q=(business)+ok</a></p>
  ````````````````````````````````
  
  If an autolink ends in a semicolon (`;`), we check to see if it appears to
  resemble an [entity reference][entity references]; if the preceding text is `&`
  followed by one or more alphanumeric characters.  If so, it is excluded from
  the autolink:
  
  ```````````````````````````````` example
  www.google.com/search?q=commonmark&hl=en
  
  www.google.com/search?q=commonmark&hl;
  .
  <p><a href="http://www.google.com/search?q=commonmark&amp;hl=en">www.google.com/search?q=commonmark&amp;hl=en</a></p>
  <p><a href="http://www.google.com/search?q=commonmark">www.google.com/search?q=commonmark</a>&amp;hl;</p>
  ````````````````````````````````
  
  `<` immediately ends an autolink.
  
  ```````````````````````````````` example
  www.commonmark.org/he<lp
  .
  <p><a href="http://www.commonmark.org/he">www.commonmark.org/he</a>&lt;lp</p>
  ````````````````````````````````
  
  
  ## GitHub Issues
  
  ### [Issue 53](https://github.com/mity/md4c/issues/53)
  ```````````````````````````````` example
  This is [link](www.github.com/).
  .
  <p>This is <a href="www.github.com/">link</a>.</p>
  ````````````````````````````````
  ```````````````````````````````` example
  This is [link](www.github.com/)X
  .
  <p>This is <a href="www.github.com/">link</a>X</p>
  ````````````````````````````````
  

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