replace gometalinter with golangci-lint (#4)

.circleci/config.yml

@@ -9,16 +9,15 @@ jobs:
     steps:
       - checkout
       - run:
-          name: Install gometalinter
+          name: Install golangci-lint
+          environment:
+            GOLANGCI_LINT_TAG: v1.15.0
           command: |
-            go get github.com/alecthomas/gometalinter
-            gometalinter --install
+            curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -d -b $GOPATH/bin $GOLANGCI_LINT_TAG
       - run:
-          name: Run gometalinter
-          environment:
-            CGO_ENABLED: 0
+          name: Lint
           command: |
-            gometalinter ./...
+            golangci-lint run ./... -v
       - run:
           name: Test
           command: |

parser_test.go

@@ -233,7 +233,9 @@ func setupRemote(t *testing.T, dir string) (string, func()) {
 func setupCommands(t *testing.T, dir, commands string) {
 	commands = "set -eo pipefail\n" + commands
 	script := path.Join(dir, "setup.sh")
-	ioutil.WriteFile(script, []byte(commands), 0644)
+	if err := ioutil.WriteFile(script, []byte(commands), 0644); err != nil {
+		t.Fatal(err)
+	}
 	cmd := exec.Command("bash", "setup.sh")
 	var stderr bytes.Buffer
 	var stdout bytes.Buffer

printer.go

@@ -12,12 +12,12 @@ import (
 
 const (
 	tAttribute rune = '@'
-	tColor          = '#'
-	tReset          = '_'
-	tData           = '%'
-	tGroupOp        = '['
-	tGroupCl        = ']'
-	tEsc            = '\\'
+	tColor     rune = '#'
+	tReset     rune = '_'
+	tData      rune = '%'
+	tGroupOp   rune = '['
+	tGroupCl   rune = ']'
+	tEsc       rune = '\\'
 )
 
 var attrs = map[rune]uint8{
@@ -53,12 +53,12 @@ var colors = map[rune]uint8{
 
 const (
 	head      rune = 'h'
-	untracked      = 'u'
-	modified       = 'm'
-	staged         = 's'
-	conflicts      = 'c'
-	ahead          = 'a'
-	behind         = 'b'
+	untracked rune = 'u'
+	modified  rune = 'm'
+	staged    rune = 's'
+	conflicts rune = 'c'
+	ahead     rune = 'a'
+	behind    rune = 'b'
 )
 
 type group struct {