Add gofumpt linter.

Author: Denis Krivak

.golangci.yml

@@ -29,6 +29,7 @@ linters:
     - gocyclo
     - godot
     - gofmt
+    - gofumpt
     - goimports
     - golint
     - gomnd

cmd/godot/main.go

@@ -16,7 +16,7 @@ import (
 var version = "master"
 
 const usage = `Usage:
-    godot [OPTION] [FILES]
+	godot [OPTION] [FILES]
 Options:
 	-a, --all       check all top-level comments (not only declarations)
 	-f, --fix       fix issues, and print fixed version to stdout

testdata/checkall/in/main.go

@@ -11,8 +11,10 @@ void myprint(char* s) {
 
 # PASS
 */
-import "C"
-import "unsafe"
+import (
+	"C"
+	"unsafe"
+)
 
 //args: tagged comment without period PASS
 

testdata/checkall/out/main.go

@@ -11,8 +11,10 @@ void myprint(char* s) {
 
 # PASS
 */
-import "C"
-import "unsafe"
+import (
+	"C"
+	"unsafe"
+)
 
 //args: tagged comment without period PASS
 

testdata/default/in/main.go

@@ -11,8 +11,10 @@ void myprint(char* s) {
 
 # PASS
 */
-import "C"
-import "unsafe"
+import (
+	"C"
+	"unsafe"
+)
 
 //args: tagged comment without period PASS
 

testdata/default/out/main.go

@@ -11,8 +11,10 @@ void myprint(char* s) {
 
 # PASS
 */
-import "C"
-import "unsafe"
+import (
+	"C"
+	"unsafe"
+)
 
 //args: tagged comment without period PASS