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-rw-r--r--spec/ruby/core/regexp/linear_time_spec.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/spec/ruby/core/regexp/linear_time_spec.rb b/spec/ruby/core/regexp/linear_time_spec.rb
index a6f8dccd46..c3b3500549 100644
--- a/spec/ruby/core/regexp/linear_time_spec.rb
+++ b/spec/ruby/core/regexp/linear_time_spec.rb
@@ -6,6 +6,10 @@ describe "Regexp.linear_time?" do
Regexp.linear_time?('a').should == true
end
+ it "returns true if matching can be done in linear time for a binary Regexp" do
+ Regexp.linear_time?(/[\x80-\xff]/n).should == true
+ end
+
it "return false if matching can't be done in linear time" do
Regexp.linear_time?(/(a)\1/).should == false
Regexp.linear_time?("(a)\\1").should == false