Correctly escape issue text in Gantt PNG export for ImageMagick convert (#38728).

Patch by Holger Just.


git-svn-id: https://svn.redmine.org/redmine/trunk@22314 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/lib/redmine/helpers/gantt_test.rb

@@ -574,4 +574,9 @@ class Redmine::Helpers::GanttHelperTest < Redmine::HelperTest
 
     assert_equal versions.sort, Redmine::Helpers::Gantt.sort_versions!(versions.dup)
   end
+
+  def test_magick_text
+    create_gantt
+    assert_equal "'foo\\'bar\\\\baz'", @gantt.send(:magick_text, "foo'bar\\baz")
+  end
 end