nolintlint: allow to fix //nolint lines (#1583)

test/testdata/fix/in/nolintlint.go

@@ -0,0 +1,17 @@
+//args: -Enolintlint -Elll
+//expected_linter: nolintlint
+//config: linters-settings.nolintlint.allow-leading-space=false
+package p
+
+import "fmt"
+
+func nolintlint() {
+	fmt.Println() // nolint:bob // leading space should be dropped
+	fmt.Println() //  nolint:bob // leading spaces should be dropped
+
+	// note that the next lines will retain trailing whitespace when fixed
+	fmt.Println() //nolint // nolint should be dropped
+	fmt.Println() //nolint:lll // nolint should be dropped
+
+	fmt.Println() //nolint:alice,lll // we don't drop individual linters from lists
+}

test/testdata/fix/out/nolintlint.go

@@ -0,0 +1,17 @@
+//args: -Enolintlint -Elll
+//expected_linter: nolintlint
+//config: linters-settings.nolintlint.allow-leading-space=false
+package p
+
+import "fmt"
+
+func nolintlint() {
+	fmt.Println() //nolint:bob // leading space should be dropped
+	fmt.Println() //nolint:bob // leading spaces should be dropped
+
+	// note that the next lines will retain trailing whitespace when fixed
+	fmt.Println() 
+	fmt.Println() 
+
+	fmt.Println() //nolint:alice,lll // we don't drop individual linters from lists
+}

test/testdata/nolintlint.go

@@ -1,7 +1,8 @@
-//args: -Enolintlint
+//args: -Enolintlint -Emisspell
+//expected_linter: nolintlint
 //config: linters-settings.nolintlint.require-explanation=true
 //config: linters-settings.nolintlint.require-specific=true
-//config: linters-settings.nolintlint.allowing-leading-space=false
+//config: linters-settings.nolintlint.allow-leading-space=false
 package testdata
 
 import "fmt"
@@ -10,4 +11,11 @@ func Foo() {
 	fmt.Println("not specific")         //nolint // ERROR "directive `.*` should mention specific linter such as `//nolint:my-linter`"
 	fmt.Println("not machine readable") // nolint // ERROR "directive `.*`  should be written as `//nolint`"
 	fmt.Println("extra spaces")         //  nolint:deadcode // because // ERROR "directive `.*` should not have more than one leading space"
+
+	// test expanded range
+	//nolint:misspell // deliberate misspelling to trigger nolintlint
+	func() {
+		mispell := true
+		fmt.Println(mispell)
+	}()
 }