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path/filepath: include the original paths in error messages

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On Windows, Rel emits error messages of the form `Rel: can't make
\windows relative to \windows`. Rather than emitting paths after
stripping volume names, emit the original paths so as to make those of
the form `Rel: can't make d:\windows relative to c:\windows`.  Fixed a
test that expected the error message to emit clean path instead of the
original.

Fixes #13259

Change-Id: I3a9bd5b137205f22794ec8046b4e917ee48cf750
Reviewed-on: https://go-review.googlesource.com/16858
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This commit is contained in:
Mohit Agarwal 2015-11-16 23:16:00 +05:30 committed by Alex Brainman
parent 888aadfa60
commit e0e4ccb51a
2 changed files with 3 additions and 3 deletions
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2
src/path/filepath/example_unix_test.go
View File

@ -35,7 +35,7 @@ func ExampleRel() {
// On Unix:
// "/a/b/c": "b/c" <nil>
// "/b/c": "../b/c" <nil>
// "./b/c": "" Rel: can't make b/c relative to /a
// "./b/c": "" Rel: can't make ./b/c relative to /a
}
func ExampleSplit() {

4
src/path/filepath/path.go
View File

@ -270,7 +270,7 @@ func Rel(basepath, targpath string) (string, error) {
baseSlashed := len(base) > 0 && base[0] == Separator
targSlashed := len(targ) > 0 && targ[0] == Separator
if baseSlashed != targSlashed || !sameWord(baseVol, targVol) {
return "", errors.New("Rel: can't make " + targ + " relative to " + base)
return "", errors.New("Rel: can't make " + targpath + " relative to " + basepath)
}
// Position base[b0:bi] and targ[t0:ti] at the first differing elements.
bl := len(base)
@ -296,7 +296,7 @@ func Rel(basepath, targpath string) (string, error) {
t0 = ti
}
if base[b0:bi] == ".." {
return "", errors.New("Rel: can't make " + targ + " relative to " + base)
return "", errors.New("Rel: can't make " + targpath + " relative to " + basepath)
}
if b0 != bl {
// Base elements left. Must go up before going down.