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go/doc/next/6-stdlib/99-minor/path/filepath/63703.md
qmuntal b09ac10bad os: don't normalize volumes to drive letters in os.Readlink 
This CL updates os.Readlink so it no longer tries to normalize volumes
to drive letters, which was not always even possible.

This behavior is controlled by the `winreadlinkvolume` setting.
For Go 1.23, it defaults to `winreadlinkvolume=1`.
Previous versions default to `winreadlinkvolume=0`.

Fixes #63703.

Cq-Include-Trybots: luci.golang.try:gotip-windows-amd64-longtest,gotip-windows-arm64
Change-Id: Icd6fabbc8f0b78e23a82eef8db89940e89e9222d
Reviewed-on: https://go-review.googlesource.com/c/go/+/567735
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-04 20:38:54 +00:00

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On Windows, filepath.EvalSymlinks no longer evaluates mount points, which was a source of many inconsistencies and bugs. This behavior is controlled by the winsymlink setting. For Go 1.23, it defaults to winsymlink=1. Previous versions default to winsymlink=0.

On Windows, filepath.EvalSymlinks no longer tries to normalize volumes to drive letters, which was not always even possible. This behavior is controlled by the winreadlinkvolume setting. For Go 1.23, it defaults to winreadlinkvolume=1. Previous versions default to winreadlinkvolume=0.