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all: use bytes.Cut, strings.Cut

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Many uses of Index/IndexByte/IndexRune/Split/SplitN
can be written more clearly using the new Cut functions.
Do that. Also rewrite to other functions if that's clearer.

For #46336.

Change-Id: I68d024716ace41a57a8bf74455c62279bde0f448
Reviewed-on: https://go-review.googlesource.com/c/go/+/351711
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Russ Cox 2021-09-22 10:46:32 -04:00
parent 8e36ab0551
commit 4d8db00641
78 changed files with 360 additions and 581 deletions
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4
src/syscall/exec_linux_test.go
View file

@ -510,9 +510,7 @@ func mustSupportAmbientCaps(t *testing.T) {
buf[i] = byte(b)
}
ver := string(buf[:])
if i := strings.Index(ver, "\x00"); i != -1 {
ver = ver[:i]
}
ver, _, _ = strings.Cut(ver, "\x00")
if strings.HasPrefix(ver, "2.") ||
strings.HasPrefix(ver, "3.") ||
strings.HasPrefix(ver, "4.1.") ||