govet: add appends analyzer (#4127)

Co-authored-by: Fernandez Ludovic <ldez@users.noreply.github.com>

Author: Antonboom

.golangci.reference.yml

@@ -1062,6 +1062,7 @@ linters-settings:
     # Run `go tool vet help` to see all analyzers.
     # Default: []
     enable:
+      - appends
       - asmdecl
       - assign
       - atomic
@@ -1109,6 +1110,7 @@ linters-settings:
     # Run `go tool vet help` to see all analyzers.
     # Default: []
     disable:
+      - appends
       - asmdecl
       - assign
       - atomic

pkg/golinters/govet.go

@@ -2,6 +2,7 @@ package golinters
 
 import (
 	"golang.org/x/tools/go/analysis"
+	"golang.org/x/tools/go/analysis/passes/appends"
 	"golang.org/x/tools/go/analysis/passes/asmdecl"
 	"golang.org/x/tools/go/analysis/passes/assign"
 	"golang.org/x/tools/go/analysis/passes/atomic"
@@ -53,6 +54,7 @@ import (
 
 var (
 	allAnalyzers = []*analysis.Analyzer{
+		appends.Analyzer,
 		asmdecl.Analyzer,
 		assign.Analyzer,
 		atomic.Analyzer,
@@ -95,8 +97,9 @@ var (
 		unusedwrite.Analyzer,
 	}
 
-	// https://github.com/golang/go/blob/c19c4c566c63818dfd059b352e52c4710eecf14d/src/cmd/vet/main.go#L47-L78
+	// https://github.com/golang/go/blob/b56645a87b28840a180d64077877cb46570b4176/src/cmd/vet/main.go#L49-L81
 	defaultAnalyzers = []*analysis.Analyzer{
+		appends.Analyzer,
 		asmdecl.Analyzer,
 		assign.Analyzer,
 		atomic.Analyzer,
@@ -105,6 +108,7 @@ var (
 		cgocall.Analyzer,
 		composite.Analyzer,
 		copylock.Analyzer,
+		defers.Analyzer,
 		directive.Analyzer,
 		errorsas.Analyzer,
 		framepointer.Analyzer,