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os: improve Getwd documentation

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1. Replace "rooted path name" with a more accurate "absolute path name".
Using "absolute" seems to be preferred terminology on Unix. On Windows,
there are multiple roots in Windows, thus "a rooted path name" can be
one relative to a drive letter or a server name. Note that Windows'
GetCurrentDirectory documentation [1] also says "the absolute path to the
current directory".

2. Add a note about using $PWD on Unix.

[1]: https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-getcurrentdirectory

Change-Id: Ic310f0f8776ff059544789306ae5cfa1fa267b12
Reviewed-on: https://go-review.googlesource.com/c/go/+/607615
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Kir Kolyshkin 2024-08-21 12:47:04 -07:00 committed by Gopher Robot
parent ea08952aa2
commit b2f3a427dd
1 changed files with 5 additions and 1 deletions
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6
src/os/getwd.go
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@ -15,10 +15,14 @@ var getwdCache struct {
dir string dir string
} }
// Getwd returns a rooted path name corresponding to the // Getwd returns an absolute path name corresponding to the
// current directory. If the current directory can be // current directory. If the current directory can be
// reached via multiple paths (due to symbolic links), // reached via multiple paths (due to symbolic links),
// Getwd may return any one of them. // Getwd may return any one of them.
//
// On Unix platforms, if the environment variable PWD
// provides an absolute name, and it is a name of the
// current directory, it is returned.
func Getwd() (dir string, err error) { func Getwd() (dir string, err error) {
if runtime.GOOS == "windows" || runtime.GOOS == "plan9" { if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
dir, err = syscall.Getwd() dir, err = syscall.Getwd()