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According to W3C's web-platform-tests: http://example.com\\foo\\bar -> http://example.com//foo//bar This matches the behaviour of Blink. However, the spec ignores backslash at the beggining of path, so: http://example.com\\foo\\bar -> http://example.com/foo//bar
Disregard this. I implemented a "Otherwise..." when there was none in the spec. Sorry for the noise.