feat: Add --tree flag to ignored command

internal/cmd/config.go

@@ -194,6 +194,7 @@ type Config struct {
 	chattr          chattrCmdConfig
 	dump            dumpCmdConfig
 	executeTemplate executeTemplateCmdConfig
+	ignored         ignoredCmdConfig
 	_import         importCmdConfig
 	init            initCmdConfig
 	managed         managedCmdConfig

internal/cmd/ignoredcmd.go

@@ -1,13 +1,15 @@
 package cmd
 
 import (
-	"strings"
-
 	"github.com/spf13/cobra"
 
 	"github.com/twpayne/chezmoi/v2/internal/chezmoi"
 )
 
+type ignoredCmdConfig struct {
+	tree bool
+}
+
 func (c *Config) newIgnoredCmd() *cobra.Command {
 	ignoredCmd := &cobra.Command{
 		Use:         "ignored",
@@ -19,18 +21,18 @@ func (c *Config) newIgnoredCmd() *cobra.Command {
 		Annotations: newAnnotations(),
 	}
 
+	ignoredCmd.Flags().BoolVarP(&c.ignored.tree, "tree", "t", c.ignored.tree, "Print paths as a tree")
+
 	return ignoredCmd
 }
 
 func (c *Config) runIgnoredCmd(cmd *cobra.Command, args []string, sourceState *chezmoi.SourceState) error {
-	builder := strings.Builder{}
-	for _, relPath := range sourceState.Ignored() {
-		if _, err := builder.WriteString(relPath.String()); err != nil {
-			return err
-		}
-		if err := builder.WriteByte('\n'); err != nil {
-			return err
-		}
+	relPaths := sourceState.Ignored()
+	paths := make([]string, 0, len(relPaths))
+	for _, relPath := range relPaths {
+		paths = append(paths, relPath.String())
 	}
-	return c.writeOutputString(builder.String())
+	return c.writePaths(paths, writePathsOptions{
+		tree: c.ignored.tree,
+	})
 }

internal/cmd/testdata/scripts/ignore.txtar

@@ -11,6 +11,10 @@ exists $HOME/.file
 exec chezmoi ignored
 cmp stdout golden/ignored
 
+# test that chezmoi ignored --tree lists the ignored entries in a tree-like format
+exec chezmoi ignored --tree
+cmp stdout golden/ignored-tree
+
 chhome home2/user
 
 # test that chezmoi manage lists all managed files
@@ -48,6 +52,9 @@ cmp stdout golden/managed-ignore-star-star-slash-star-dot-txt
 -- golden/ignored --
 .dir
 README.md
+-- golden/ignored-tree --
+.dir
+README.md
 -- golden/managed-all --
 .dir
 .dir/file.txt