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Raise ArgumentError if sprintf format string ends with %

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* Add tests and specs. See ruby/spec#401.
  Patch by Yuta Iwama and Shintaro Morikawa.
  [ruby-core:80153] [Bug #13315] [Fix GH-1560]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58890 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
eregon 2017-05-25 15:33:28 +00:00
parent e779eee98b
commit fd8df3ab3d
3 changed files with 26 additions and 4 deletions
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15
spec/rubyspec/core/string/modulo_spec.rb
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@ -14,9 +14,18 @@ describe "String#%" do
("%d%% %s" % [10, "of chickens!"]).should == "10% of chickens!"
end
it "formats single % character at the end as literal %" do
("%" % []).should == "%"
("foo%" % []).should == "foo%"
ruby_version_is ""..."2.5" do
it "formats single % character at the end as literal %" do
("%" % []).should == "%"
("foo%" % []).should == "foo%"
end
end
ruby_version_is "2.5" do
it "raises an error if single % appears at the end" do
lambda { ("%" % []) }.should raise_error(ArgumentError)
lambda { ("foo%" % [])}.should raise_error(ArgumentError)
end
end
it "formats single % character before a newline as literal %" do