More linting (#2099)

* Address gocritic findings, enable it

* Enable gosimple, no new findings to address

.golangci.yml

@@ -29,7 +29,7 @@ linters:
     - gas
     #- gochecknoinits
     - goconst
-    #- gocritic
+    - gocritic
     #- gocyclo
     #- gofmt
     - goimports
@@ -37,7 +37,7 @@ linters:
     #- gomnd
     #- goprintffuncname
     #- gosec
-    #- gosimple
+    - gosimple
     - govet
     - ineffassign
     - interfacer

bash_completions.go

@@ -597,9 +597,7 @@ func writeRequiredFlag(buf io.StringWriter, cmd *Command) {
 		if nonCompletableFlag(flag) {
 			return
 		}
-		for key := range flag.Annotations {
-			switch key {
-			case BashCompOneRequiredFlag:
+		if _, ok := flag.Annotations[BashCompOneRequiredFlag]; ok {
 			format := "    must_have_one_flag+=(\"--%s"
 			if flag.Value.Type() != "bool" {
 				format += "="
@@ -611,7 +609,6 @@ func writeRequiredFlag(buf io.StringWriter, cmd *Command) {
 				WriteStringAndCheck(buf, fmt.Sprintf("    must_have_one_flag+=(\"-%s"+cbn, flag.Shorthand))
 			}
 		}
-		}
 	})
 }
 

doc/man_docs.go

@@ -133,7 +133,7 @@ func fillHeader(header *GenManHeader, name string, disableAutoGen bool) error {
 		}
 		header.Date = &now
 	}
-	header.date = (*header.Date).Format("Jan 2006")
+	header.date = header.Date.Format("Jan 2006")
 	if header.Source == "" && !disableAutoGen {
 		header.Source = "Auto generated by spf13/cobra"
 	}

doc/util.go

@@ -40,7 +40,7 @@ func hasSeeAlso(cmd *cobra.Command) bool {
 // that do not contain \n.
 func forceMultiLine(s string) string {
 	if len(s) > 60 && !strings.Contains(s, "\n") {
-		s = s + "\n"
+		s += "\n"
 	}
 	return s
 }

powershell_completions.go

@@ -28,8 +28,8 @@ import (
 func genPowerShellComp(buf io.StringWriter, name string, includeDesc bool) {
 	// Variables should not contain a '-' or ':' character
 	nameForVar := name
-	nameForVar = strings.Replace(nameForVar, "-", "_", -1)
-	nameForVar = strings.Replace(nameForVar, ":", "_", -1)
+	nameForVar = strings.ReplaceAll(nameForVar, "-", "_")
+	nameForVar = strings.ReplaceAll(nameForVar, ":", "_")
 
 	compCmd := ShellCompRequestCmd
 	if !includeDesc {