ActiveSupport::BacktraceCleaner#remove_filters! allows for completely untouched backtrace [#4079 state:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>

activesupport/lib/active_support/backtrace_cleaner.rb

@@ -4,7 +4,9 @@ module ActiveSupport
   # context, so only the relevant lines are included.
   #
   # If you need to reconfigure an existing BacktraceCleaner, like the one in Rails, to show as much as possible, you can always
-  # call BacktraceCleaner#remove_silencers!
+  # call BacktraceCleaner#remove_silencers! Also, if you need to reconfigure an existing BacktraceCleaner so that it does not
+  # filter or modify the paths of any lines of the backtrace, you can call BacktraceCleaner#remove_filters! These two methods
+  # will give you a completely untouched backtrace.
   #
   # Example:
   #
@@ -60,6 +62,10 @@ def remove_silencers!
       @silencers = []
     end
 
+    def remove_filters!
+      @filters = []
+    end
+
     private
       def filter(backtrace)
         @filters.each do |f|

activesupport/test/clean_backtrace_test.rb

@@ -9,6 +9,11 @@ def setup
   test "backtrace should not contain prefix when it has been filtered out" do
     assert_equal "/my/class.rb", @bc.clean([ "/my/prefix/my/class.rb" ]).first
   end
+
+  test "backtrace cleaner should allow removing filters" do
+    @bc.remove_filters!
+    assert_equal "/my/prefix/my/class.rb", @bc.clean(["/my/prefix/my/class.rb"]).first
+  end
   
   test "backtrace should contain unaltered lines if they dont match a filter" do
     assert_equal "/my/other_prefix/my/class.rb", @bc.clean([ "/my/other_prefix/my/class.rb" ]).first
@@ -44,4 +49,4 @@ def setup
   test "backtrace should not silence lines that has first had their silence hook filtered out" do
     assert_equal [ "/class.rb" ], @bc.clean([ "/mongrel/class.rb" ])
   end
-end
+end