Add --no-repl-history option.

main.go

@@ -385,6 +385,8 @@ func usage(out io.Writer) {
 	fmt.Fprintln(out, "    After failure processing --eval or --file, drop into repl instead of exiting.")
 	fmt.Fprintln(out, "  --no-readline")
 	fmt.Fprintln(out, "    Disable readline functionality in the repl. Useful when using rlwrap.")
+	fmt.Fprintln(out, "  --no-repl-history")
+	fmt.Fprintln(out, "    Do not read or save repl command history to a file.")
 	fmt.Fprintln(out, "  --working-dir <directory>")
 	fmt.Fprintln(out, "    Specify directory to lint or working directory for lint configuration if linting single file (requires --lint).")
 	fmt.Fprintln(out, "  --report-globally-unused")
@@ -429,6 +431,7 @@ var (
 	cpuProfileRateFlag       bool
 	memProfileName           string
 	noReadline               bool
+	noReplHistory            bool
 	exitToRepl               bool
 	errorToRepl              bool
 )
@@ -576,6 +579,8 @@ func parseArgs(args []string) {
 			}
 		case "--no-readline":
 			noReadline = true
+		case "--no-repl-history":
+			noReplHistory = true
 		case "--exit-to-repl":
 			exitToRepl = true
 			if i < length-1 && notOption(args[i+1]) {
@@ -708,6 +713,7 @@ func main() {
 		fmt.Fprintf(debugOut, "replSocket=%v\n", replSocket)
 		fmt.Fprintf(debugOut, "classPath=%v\n", classPath)
 		fmt.Fprintf(debugOut, "noReadline=%v\n", noReadline)
+		fmt.Fprintf(debugOut, "noReplHistory=%v\n", noReplHistory)
 		fmt.Fprintf(debugOut, "filename=%v\n", filename)
 		fmt.Fprintf(debugOut, "remainingArgs=%v\n", remainingArgs)
 		fmt.Fprintf(debugOut, "exitToRepl=%v\n", exitToRepl)

repl.go

@@ -60,6 +60,16 @@ func completer(line string, pos int) (head string, c []string, tail string) {
 	return
 }
 
+func saveReplHistory(rl *liner.State, filename string) {
+	if filename == "" {
+		return
+	}
+	if f, err := os.Create(filename); err == nil {
+		rl.WriteHistory(f)
+		f.Close()
+	}
+}
+
 func repl(phase Phase) {
 	ProcessReplData()
 	GLOBAL_ENV.FindNamespace(MakeSymbol("user")).ReferAll(GLOBAL_ENV.FindNamespace(MakeSymbol("joker.repl")))
@@ -80,22 +90,22 @@ func repl(phase Phase) {
 				fmt.Fprintf(Stderr, "WARNING: could not create %s \n", jokerd)
 			}
 		}
-		historyFilename = filepath.Join(jokerd, ".repl_history")
+		if !noReplHistory {
+			historyFilename = filepath.Join(jokerd, ".repl_history")
+		}
 		rl = liner.NewLiner()
 		OnExit(func() {
-			if f, err := os.Create(historyFilename); err == nil {
-				rl.WriteHistory(f)
-				f.Close()
-			}
-			rl.Close()
+			saveReplHistory(rl, historyFilename)
 		})
 		defer rl.Close()
 		rl.SetCtrlCAborts(true)
 		rl.SetWordCompleter(completer)
 
-		if f, err := os.Open(historyFilename); err == nil {
-			rl.ReadHistory(f)
-			f.Close()
+		if !noReplHistory {
+			if f, err := os.Open(historyFilename); err == nil {
+				rl.ReadHistory(f)
+				f.Close()
+			}
 		}
 
 		runeReader = NewLineRuneReader(rl)
@@ -117,12 +127,7 @@ func repl(phase Phase) {
 			runeReader.(*LineRuneReader).Prompt = (GLOBAL_ENV.CurrentNamespace().Name.ToString(false) + "=> ")
 		}
 		if processReplCommand(reader, phase, parseContext, replContext) {
-			if !noReadline {
-				if f, err := os.Create(historyFilename); err == nil {
-					rl.WriteHistory(f)
-					f.Close()
-				}
-			}
+			saveReplHistory(rl, historyFilename)
 			return
 		}
 	}