Allow specifying a literal `%h` in `HostName` ssh config

git/ssh_config.go

@@ -71,6 +71,14 @@ func (r *SSHConfigReader) readFile(c SSHConfig, re *regexp.Regexp, f string) err
 }
 
 func expandTokens(text, host string) string {
-	expanded := strings.Replace(text, "%h", host, -1)
-	return strings.Replace(expanded, "%%", "%", -1)
+	re := regexp.MustCompile(`%[%h]`)
+	return re.ReplaceAllStringFunc(text, func(match string) string {
+		switch match {
+		case "%h":
+			return host
+		case "%%":
+			return "%"
+		}
+		return ""
+	})
 }

git/ssh_config_test.go

@@ -28,13 +28,13 @@ func TestSSHConfigReader_Read(t *testing.T) {
 func TestSSHConfigReader_ExpandTokens(t *testing.T) {
 	f, _ := ioutil.TempFile("", "ssh-config")
 	c := `Host github.com example.org
-  Hostname 1-%h-2-%%-3-%h-%%
+  Hostname 1-%h-2-%%h-3-%h-%%
 	`
 
 	ioutil.WriteFile(f.Name(), []byte(c), os.ModePerm)
 
 	r := &SSHConfigReader{[]string{f.Name()}}
 	sc := r.Read()
-	assert.Equal(t, "1-github.com-2-%-3-github.com-%", sc["github.com"])
-	assert.Equal(t, "1-example.org-2-%-3-example.org-%", sc["example.org"])
+	assert.Equal(t, "1-github.com-2-%h-3-github.com-%", sc["github.com"])
+	assert.Equal(t, "1-example.org-2-%h-3-example.org-%", sc["example.org"])
 }