Linter fixes.

Author: bengarrett

.golangci.yml

@@ -8,6 +8,17 @@ linters:
     - scopelint # Deprecated
     - golint # Deprecated
     - maligned # Deprecated
+    # unsupported in Go v1.18
+    - bodyclose
+    - contextcheck
+    - nilerr
+    - noctx
+    - rowserrcheck
+    - sqlclosecheck
+    - structcheck
+    - tparallel
+    - unparam
+    - wastedassign
 
     - exhaustivestruct # 'It is not recommended to use it for all files in a project'
     - forbidigo # forbids the use for fmt.Print(f|ln)
@@ -20,3 +31,10 @@ linters-settings:
     max-complexity: 15 # default value 10 requires unnecessary refactoring
   varnamelen:
     min-name-length: 1 # default value 3 is too short
+
+issues:
+  exclude-rules:
+    # Exclude some linters from running on tests files.
+    - path: _test\.go
+      linters:
+        - exhaustruct

pkg/example_test.go

@@ -1,5 +1,4 @@
 // © Ben Garrett https://github.com/bengarrett/zipcmt
-
 package zipcmt_test
 
 import (

pkg/zipcmt.go

@@ -84,6 +84,7 @@ type (
 )
 
 var (
+	ErrFlag    = errors.New("directories to scan must be listed after any option flags")
 	ErrIsFile  = errors.New("directory is a file")
 	ErrMissing = errors.New("directory cannot be found")
 	ErrPath    = errors.New("directory path cannot be found or points to a file")
@@ -182,6 +183,7 @@ func (c *Config) WalkDir(root string) error { // nolint: cyclop,funlen,gocognit
 		}
 		// save the comment to a text file
 		dat := save{
+			name: "",
 			src:  path,
 			cmmt: cmmt,
 			mod:  c.lastMod(d),
@@ -211,8 +213,7 @@ func walkErrs(root string, err error) error {
 	var pathError *os.PathError
 	if errors.As(err, &pathError) {
 		if root != "" && root[:1] == "-" {
-			return fmt.Errorf("detected an options flag, "+
-				"all the directories to scan must be listed after any option flags: %s", root)
+			return fmt.Errorf("detected an options flag, %w: %s", ErrFlag, root)
 		}
 	}
 	if err != nil {