add postfix repos name to all files

cmd/root.go

@@ -154,6 +154,7 @@ func run(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("cannot create output directory: %w", err)
 	}
 
+	repoName := filepath.Base(cfg.AbsRoot)
 	fmt.Printf("%s\n", absOutput)
 
 	result, err := walker.Run(cfg)
@@ -165,8 +166,10 @@ func run(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("no readable text files found in %s", cfg.AbsRoot)
 	}
 
+	indexBasename := "index_" + repoName + ".md"
+
 	if verticalSlices {
-		generated, err := renderer.WriteSlices(result, absOutput)
+		generated, err := renderer.WriteSlices(result, absOutput, repoName)
 		if err != nil {
 			return err
 		}
@@ -197,7 +200,7 @@ func run(cmd *cobra.Command, args []string) error {
 		return nil
 	}
 
-	indexPath := filepath.Join(absOutput, "index.md")
+	indexPath := filepath.Join(absOutput, indexBasename)
 
 	if err := renderer.Write(result, indexPath, appendMode, cfg.SingleFile); err != nil {
 		return err