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From "Jan Spitalnik (JIRA)" <>
Subject [jira] Created: (JSPWIKI-317) ExternalDiffProvider
Date Fri, 18 Jul 2008 11:54:33 GMT

                 Key: JSPWIKI-317
             Project: JSPWiki
          Issue Type: Bug
          Components: Plugins
    Affects Versions: 2.6.3
         Environment: Solaris 10 Update 4, Sun Webserver 7.0u1, sun4v
            Reporter: Jan Spitalnik
            Priority: Minor
             Fix For: 2.6.3

Setting diff provider to ExternaDiff provider in properties file:

jspwiki.diffProvider = ExternalDiffProvider
jspwiki.diffCommand = /usr/bin/diff -u %s1 %s2

will not return the diff but "Invalid diff - probably something wrong with server setup."
instead. The problem is in src/com/ecyrd/jspwiki/diff/ file in makeDiffHtml()

            if (m_traditionalColorization) //FIXME, see comment near declaration...
                diff = colorizeDiff(diff);
                diff = htmlWikiDiff;

diff is initialized to null, then we call 'diff = colorizeDiff(diff)'. At this point diff
was never changed and is still null. colorizeDiff() will return above mentioned message. The
fix is simple,
instead of passing diff to colorizeDiff we should pass htmlWikiDiff. As that variable contains
the actuall diff.

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