Bug #14640: [win32] File.realpath treats a relative path with a drive letter as an absolute path.

• Status: Closed
• Assignee: windows
• Target version: -
• ruby -v: 2.6.0
• Backport: 2.3: REQUIRED, 2.4: REQUIRED, 2.5: REQUIRED
• Tags: core, win

[nobu (Nobuyoshi Nakada)]

When t exists in the current directory under the drive C:,

File.realpath("c:t") #=> No such file or directory @ realpath_rec - c:/t (Errno::ENOENT)

whereas File.expand_path returns Dir.pwd + "/t".

[naruse (Yui NARUSE)]

• Target version deleted (2.6)

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Assigned

[hsbt (Hiroshi SHIBATA)]

• Status changed from Assigned to Closed

Applied in changeset git|a22017a42a13945ce3c9129135ae760c988a1ba9.

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[Bug #14640] Fix File.realpath with a drive-relative path

A drive letter without a following separator ("c:t") means a path relative to the current directory of that drive, as File.absolute_path interprets it, not the absolute path "c:/t". A drive-relative basedir is read the same way, "~" stays literal since realpath does not expand home directories, and US-ASCII or ASCII-8BIT input is expanded in the filesystem encoding so that a non-ASCII current directory does not come back as "?".

Co-Authored-By: Claude Opus 5.5 [e-mail]