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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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2
src/runtime/runtime-gdb_test.go
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@ -267,7 +267,7 @@ func testGdbPython(t *testing.T, cgo bool) {
t.Fatalf("gdb exited with error: %v", err)
}
firstLine := bytes.SplitN(got, []byte("\n"), 2)[0]
firstLine, _, _ := bytes.Cut(got, []byte("\n"))
if string(firstLine) != "Loading Go Runtime support." {
// This can happen when using all.bash with
// GOROOT_FINAL set, because the tests are run before