nolint for function and for line

[rekby]

for code:

package main

import (
	"bytes"
	"io"
)

//nolint:gas
func main() {
	var buf io.Writer = &bytes.Buffer{}
	//nolint:errcheck
	buf.Write([]byte("123"))
}

I have error errcheck

golangci-lint run
main.go:12:11: Error return value of `buf.Write` is not checked (errcheck)
        buf.Write([]byte("123"))

Expected no errors:

Congrats! No issues were found.

[jirfag]

@rekby thank you! cool bug :)
@alecthomas FYI gometalinter has the same bug:

~/go/src/github.com/golangci/golangci-lint (master *)$ cat test.go
package testdata

import (
  "bytes"
  "io"
)

func noTransitiveExpanding() {
  //nolint:errcheck
  var buf io.Writer = &bytes.Buffer{}
  buf.Write([]byte("123"))
}
~/go/src/github.com/golangci/golangci-lint (support/fix-nolint-transitive-expanding)$ gometalinter --disable-all -E errcheck test.go
~/go/src/github.com/golangci/golangci-lint (support/fix-nolint-transitive-expanding)$ golangci-lint run --disable-all -E errcheck --no-config test.go
test.go:11:12: Error return value of `buf.Write` is not checked (errcheck)
  buf.Write([]byte("123"))
           ^

[septs]

edge cases:

var buf bytes.Buffer
binary.Write(&buf, binary.BigEndian, ....)
v.WriteTo(&buf) // v is `io.WriterTo`
// etc