added config file support to set custom colors

cmd/root.go

@@ -92,6 +92,11 @@ func Execute() {
 			}
 
 			// Setup
+			err := conf.ParseConfigfile()
+			if err != nil {
+				return err
+			}
+
 			conf.CheckEnv()
 			conf.PrepareModeFlags(modeflag)
 			conf.PrepareSortFlags(sortmode)
@@ -99,7 +104,7 @@ func Execute() {
 			conf.ApplyDefaults()
 
 			// setup lisp env, load plugins etc
-			err := lib.SetupLisp(&conf)
+			err = lib.SetupLisp(&conf)
 			if err != nil {
 				return err
 			}
@@ -146,6 +151,9 @@ func Execute() {
 	// lisp options
 	rootCmd.PersistentFlags().StringVarP(&conf.LispLoadPath, "load-path", "l", cfg.DefaultLoadPath, "Load path for lisp plugins (expects *.zy files)")
 
+	// config file
+	rootCmd.PersistentFlags().StringVarP(&conf.Configfile, "config", "f", cfg.DefaultConfigfile, "config file (default: ~/.config/tablizer/config)")
+
 	rootCmd.SetUsageTemplate(strings.TrimSpace(usage) + "\n")
 
 	err := rootCmd.Execute()

cmd/tablizer.go

@@ -36,6 +36,7 @@ SYNOPSIS
 
         Other Flags:
               --completion <shell> Generate the autocompletion script for <shell>
+          -f, --config <file>      Configuration file (default: ~/.config/tablizer/config)
           -d, --debug              Enable debugging
           -h, --help               help for tablizer
           -m, --man                Display manual page
@@ -328,6 +329,7 @@ Sort Mode Flags (mutually exclusive):
 
 Other Flags:
       --completion <shell> Generate the autocompletion script for <shell>
+  -f, --config <file>      Configuration file (default: ~/.config/tablizer/config)
   -d, --debug              Enable debugging
   -h, --help               help for tablizer
   -m, --man                Display manual page