chore: update doc and code

Author: ldez

.golangci.reference.yml

@@ -565,6 +565,10 @@ linters-settings:
         # Whether to restrict checker to params only.
         # Default: true
         paramsOnly: false
+      commentedOutCode:
+        # Min length of the comment that triggers a warning.
+        # Default: 15
+        minLength: 50
       elseif:
         # Whether to skip balanced if-else pairs.
         # Default: true
@@ -573,6 +577,10 @@ linters-settings:
         # Size in bytes that makes the warning trigger.
         # Default: 80
         sizeThreshold: 70
+      ifElseChain:
+        # Min number of if-else blocks that makes the warning trigger.
+        # Default: 2
+        minThreshold: 4
       nestingReduce:
         # Min number of statements inside a branch to trigger a warning.
         # Default: 5
@@ -602,7 +610,7 @@ linters-settings:
         # Then:
         #   ruleguard prints the specific Where() condition that was rejected.
         #
-        # The flag is passed to the ruleguard 'debug-group' argument.
+        # The option is passed to the ruleguard 'debug-group' argument.
         # Default: ""
         debug: 'emptyDecl'
         # Deprecated, use 'failOn' param.

pkg/golinters/mirror.go

@@ -39,7 +39,7 @@ func NewMirror() *goanalysis.Linter {
 				Pos:        i.Start,
 			}
 
-			if len(i.InlineFix) > 0 {
+			if i.InlineFix != "" {
 				issue.Replacement = &result.Replacement{
 					Inline: &result.InlineFix{
 						StartCol:  i.Start.Column - 1,

pkg/golinters/nolintlint/nolintlint.go

@@ -171,7 +171,7 @@ func (l Linter) Run(fset *token.FileSet, nodes ...ast.Node) ([]Issue, error) {
 				}
 
 				directiveWithOptionalLeadingSpace := "//"
-				if len(leadingSpace) > 0 {
+				if leadingSpace != "" {
 					directiveWithOptionalLeadingSpace += " "
 				}
 
@@ -188,7 +188,7 @@ func (l Linter) Run(fset *token.FileSet, nodes ...ast.Node) ([]Issue, error) {
 				}
 
 				// check for, report and eliminate leading spaces, so we can check for other issues
-				if len(leadingSpace) > 0 {
+				if leadingSpace != "" {
 					removeWhitespace := &result.Replacement{
 						Inline: &result.InlineFix{
 							StartCol:  pos.Column + 1,
@@ -217,7 +217,7 @@ func (l Linter) Run(fset *token.FileSet, nodes ...ast.Node) ([]Issue, error) {
 				lintersText, explanation := fullMatches[1], fullMatches[2]
 
 				var linters []string
-				if len(lintersText) > 0 && !strings.HasPrefix(lintersText, "all") {
+				if lintersText != "" && !strings.HasPrefix(lintersText, "all") {
 					lls := strings.Split(lintersText, ",")
 					linters = make([]string, 0, len(lls))
 					rangeStart := (pos.Column - 1) + len("//") + len(leadingSpace) + len("nolint:")