Eryk Sun <eryk...@gmail.com> added the comment:
> This behavior is inconsistent with `os.path.abspath` where it always
> returns lowercased drive letter,
ntpath.abspath calls GetFullPathNameW, which generally preserves the input case
of the device/drive component. But it doesn't always preserve drive-letter
case. In particular, a drive-relative path gets resolved with the upper-case
drive letter:
>>> os.path.abspath('c:spam')
'C:\\Temp\\spam'
That's a corner case that maybe needs to be addressed for ntpath.abspath.
However, regarding ntpath.realpath, I see no reason for it to preserve the
input case. To the contrary, it should always make a best effort to normalize
the input path to use the real device and component names and replace 8.3 short
names with long names.
> and also causes a failure in Gecko build script:
> https://bugzilla.mozilla.org/show_bug.cgi?id=1628726
IMO, the bug there is using a case-insensitive path as a key without first case
folding the string.
----------
nosy: +eryksun
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<https://bugs.python.org/issue40368>
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