= Description =

If a section header has extra spaces, either trailing or leading, then the hashing algorithm for the #head-xxx anchor computes one hash for the Table of Contents (TOC), and one hash for the section itself.  Thus, clicking on the TOC entry will ''not'' jump to that section. 

== Example ==

[[MoinMoinBugs_2fTableOfContentsBreakOnExtraSpaces_2fTest|MoinMoinBugs/TableOfContentsBreakOnExtraSpaces/Test]] has a page with a lot of vertical space, so you can click and see the page jump (or not jump).  Or, you can look at the html source for this page.

<<TableOfContents>>
===  Header with leading space ===
=== Header with trailing space  ===

== Details ==

This Wiki.

= Discussion =

A work-around is for the page author to remove those spaces, but he or she would have to know about the bug.

The problem is not related to headings generation, both `= head =` and `=     head    =` are formated identically. See "parser.wiki: ignore white space around heading text" in http://nirs.dyndns.org/tests?test .

The problem is in the way the TOC macro creates the links, which is different from those created by the parser/formater, see "parser.wiki: TOC links to headings with white space" in http://nirs.dyndns.org/tests?test

{{{
======================================================================
FAIL: parser.wiki: TOC links to headings with white space
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Volumes/Home/nir/Projects/moin/tests/MoinMoin/_tests/test_parser_wiki.py", line 101, in testHeadingWithWhiteSpace
    'Expected "%(expected)s" but got "%(result)s"' % locals())
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/unittest.py", line 292, in failUnlessEqual
    raise self.failureException, \
AssertionError: Expected "<ol>
<li>
<a href="#head-8809edb77f319ec2f52fca2114de27d637fa4642">heading</a></li>
</ol>

 <h2 id="head-8809edb77f319ec2f52fca2114de27d637fa4642">heading</h2>Text " but got "<ol>
<li>
<a href="#head-df10d250709b57a192d521cb3f8cbf327d2c0f39">  heading  </a></li>
</ol>

 <h2 id="head-8809edb77f319ec2f52fca2114de27d637fa4642">heading</h2>Text "
}}}

= Plan =

## This part is for Moin``Moin developers:

 * Priority: medium
 * Assigned to: OliverGraf
 * Status: fixed in moin--main--1.3--patch-72

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CategoryMoinMoinBugFixed