Redmine

Problem:
When reviewing file-level changes in Mercurial repositories, URLs of the form below fail with the error "The entry or revision was not found in the repository":

http://redmine.example.com/repositories/diff/myproj/myfile.php?rev=39

This link can be found when reviewing a revision, to the right of each revised file click on the word "diff" inside of parentheses.

The issue is caused because a badly formed shell command is being generated. What should be generated is
/usr/bin/hg -R 'file:///path_to_myproj/' diff -r 38 -r 39 --nodates -I '/path_to_myproj/myfile.php'

What is actually generated is:
/usr/bin/hg -R 'file:///path_to_myproj/' diff -r 38 -r 39 --nodates -I 'file:///path_to_myproj/myfile.php'

Fix:

In /lib/redmine/scm/adapters/mercurial_adapter.rb, replace this line:

cmd << " -I #{target(path)}" unless path.empty?

with:

unless path.empty?
            filepath = target(path).sub(/file:\/\//, '')
           cmd << " -I #{filepath}"
          end