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@@ -40,15 +40,14 @@ module Spec
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       def tweak_backtrace(error)
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         return if error.backtrace.nil?
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-        error.backtrace.collect! do |line|
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-          clean_up_double_slashes(line)
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-          IGNORE_PATTERNS.each do |ignore|
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-            if line =~ ignore
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-              line = nil
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-              break
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+        error.backtrace.collect! do |message|
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+          clean_up_double_slashes(message)
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+          kept_lines = message.split("\n").select do |line|
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+            IGNORE_PATTERNS.each do |ignore|
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+              break if line =~ ignore
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             end
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           end
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-          line
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+          kept_lines.empty?? nil : kept_lines.join("\n")
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         end
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         error.backtrace.compact!
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       end

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@@ -51,6 +51,12 @@ module Spec
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         @tweaker.tweak_backtrace(@error)
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         @error.backtrace.should include("/a/b/c/d.rb")
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       end
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+
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+      it "should gracefully handle backtraces with newlines" do
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+        @error.set_backtrace(["we like\nbin/spec:\nnewlines"])
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+        @tweaker.tweak_backtrace(@error)
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+        @error.backtrace.should include("we like\nnewlines")
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+      end
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     end
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   end
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 end