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Return same string object when no interpolations were made #649

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Feb 28, 2023
Merged

Return same string object when no interpolations were made #649

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8 changes: 7 additions & 1 deletion lib/i18n/interpolate/ruby.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,11 @@ def interpolate(string, values)

def interpolate_hash(string, values)
pattern = INTERPOLATION_PATTERNS_CACHE[config.interpolation_patterns]
string.gsub(pattern) do |match|
interpolated = false

interpolated_string = string.gsub(pattern) do |match|
interpolated = true

if match == '%%'
'%'
else
Expand All @@ -42,6 +46,8 @@ def interpolate_hash(string, values)
$3 ? sprintf("%#{$3}", value) : value
end
end

interpolated ? interpolated_string : string
end
end
end
6 changes: 6 additions & 0 deletions test/i18n/interpolate_test.rb
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Expand Up @@ -65,9 +65,15 @@ def gsub(*args, &block)
end

end

test "with String subclass that redefined gsub method" do
assert_equal "Hello mars world", I18n.interpolate(RailsSafeBuffer.new("Hello %{planet} world"), :planet => 'mars')
end

test "with String subclass that redefined gsub method returns same object if no interpolations" do
string = RailsSafeBuffer.new("Hello world")
assert_same string, I18n.interpolate(string, :planet => 'mars')
end
end

class I18nMissingInterpolationCustomHandlerTest < I18n::TestCase
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