{"foo", "b=\nar=\n==\x00", "18 foo=b=\nar=\n==\x00\n", true},
		{"foo", "hello9 foo=ba\nworld", "27 foo=hello9 foo=ba\nworld\n", true},
		{"☺☻☹", "日a本b語ç", "27 ☺☻☹=日a本b語ç\n", true},
		{"xhello", "\x00world", "17 xhello=\x00world\n", true},
		{"path", "null\x00", "", false},
		{"null\x00", "value", "", false},
		{paxSchilyXattr + "key", "null\x00", "26 SCHILY.xattr.key=null\x00\n", true},
	}

	)

	// Issue 6659 cases (more single string replacer)

	noHello := NewReplacer("Hello", "")
	testCases = append(testCases,
		testCase{noHello, "Hello", ""},
		testCase{noHello, "Hellox", "x"},
		testCase{noHello, "xHello", "x"},
		testCase{noHello, "xHellox", "xx"},
	)

	// No-arg test cases.

	nop := NewReplacer()
	testCases = append(testCases,

Hello, Gophers!...

Hello, Gophers!...

-- input --
	Hello,
	world

	This is
	a test.
-- dump --
Doc
	Paragraph
		Plain
			"Hello,\n"
			"world"
	Paragraph
		Plain
			"This is\n"
			"a test."
-- gofmt --
Hello,
world

This is
a test.
-- html --
<p>Hello,
world
<p>This is
a test.
-- markdown --
Hello, world

This is a test.
-- text --
Hello, world

handle hg
hg init

hg add hello.go
hg commit --user 'bwk' --date '2017-09-21T21:14:14-04:00' --message 'hello world'

hg log -r ':' --template '{node|short} {desc|strip|firstline}\n'
cmp stdout .hg-log

-- .hg-log --
e483a7d9f8c9 hello world
-- hello.go --
package main

func main() {
	println("hello, world")

handle bzr

env BZR_EMAIL='Russ Cox <******@****.***>'
env EMAIL='Russ Cox <******@****.***>'

bzr init-repo .

bzr init b
cd b
cp ../hello.go .
bzr add hello.go
bzr commit --commit-time='2017-09-21 21:20:12 -0400' -m 'hello world'
bzr push ..
cd ..
rm b

bzr log
cmp stdout .bzr-log

-- .bzr-log --
------------------------------------------------------------
revno: 1
committer: Russ Cox <******@****.***>

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello
spec:
  replicas: 7
  selector:
    matchLabels:
      app: hello
      tier: backend
      track: stable
  template:
    metadata:
      labels:
        app: hello
        tier: backend
        track: stable
    spec:
      containers:
        - name: hello
          image: "fake.docker.io/google-samples/hello-go-gke:1.0"
          ports:

#include <stdio.h>
#include "hello.h"

void LIB_FUNC hello () {
  printf("Hello world!");

#include <iostream>
#include "hello.h"

void LIB_FUNC hello () {
  #ifdef FRENCH
  std::cout << "Bonjour monde!" << std::endl;
  #else
  std::cout << "Hello world!" << std::endl;
  #endif