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String#[]= can break UTF-8 length counting #3448

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dabroz opened this Issue Feb 10, 2017 · 0 comments

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dabroz commented Feb 10, 2017

At commit c802cd0

When mruby is compiled with MRB_UTF8_STRING, following code gives weird results:

a = ' ' * 34
a[-6..-1] = 'foobór'
a.length # is 35, should be 34
a.split('').length # is 34
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