Scott Hoof created IO-475:
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Summary: FilenameUtils#normalizeNoEndSeparator returns null for
UNC prefix without trailing backslash
Key: IO-475
URL: https://issues.apache.org/jira/browse/IO-475
Project: Commons IO
Issue Type: Bug
Affects Versions: 2.4, 2.3, 2.2, 2.1, 2.0.1, 2.0, 1.4
Reporter: Scott Hoof
Priority: Minor
FilenameUtils#normalizeNoEndSeparator returns null for UNC prefix without
trailing backslash.
The observed behavior is that normalizeNoEndSeparator returns a non-null value
for the following unc-path-prefix:
\\{serverName-or-IP}\
but returns null for the following unc-path-prefix:
\\{serverName-or-IP}
There is nothing in the Microsoft API documentation which would suggest that
the second unc-path-prefix would be invalid.
Therefore the expectation is that they should be treated as equivalent by
FilenameUtils#normalizeNoEndSeparator.
The handling of unc-path-prefix is inconsistent with how
FilenameUtils#normalizeNoEndSeparator handles drive relative and drive absolute
path prefixes, where each notation is accepted and returns a non-null --> ( C:
and C:\ ).
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