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File.dirname normalization differs from MRI #2391

rjnienaber opened this issue Dec 30, 2014 · 2 comments

File.dirname normalization differs from MRI #2391

rjnienaber opened this issue Dec 30, 2014 · 2 comments


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From: Differs from MRI on JRuby 1.7.18 and JRuby 9000.

MRI strips additional leading slashes with File.dirname:

File.dirname("////foo/bar/baz") => /foo/bar (MRI)
File.dirname("////foo/bar/baz") => ////foo/bar (JRuby)

However, I'm not sure if this "normalization" is intentional in MRI or accidental, because it only seems to work on leading slashes in MRI:

File.dirname("////foo//bar/baz") => /foo//bar (MRI)
File.dirname("////foo//bar/baz") => ////foo//bar (JRuby)

I'd say the spec needs to be fleshed out. Either the path should be completely normalized, or not at all.

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rtyler commented Aug 2, 2015

I've reproduced this with the latest 9k and 1.7.21 FWIW

@enebo enebo added this to the JRuby milestone May 16, 2017
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enebo commented May 16, 2017

I fixed this some time during 9.1.x and we have EOLd 1.7.x. Resolving.

@enebo enebo closed this as completed May 16, 2017
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