From e2c9cee54fd9b9b2420265a45772a8216419cba3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=91=A8=E6=B1=89=E6=88=90?= <308114274@qq.com>
Date: Fri, 23 Oct 2015 09:10:34 +0800
Subject: [PATCH 1/2] fix bug
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

remove ‘.history’ instead of the earliest record from history array
when trigger ‘line’ event.
---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index cea2c5b..d44a252 100644
--- a/index.js
+++ b/index.js
@@ -15,7 +15,7 @@ module.exports = function (repl, file) {
       fs.write(fd, code + '\n');
     } else {
       repl.rli.historyIndex++;
-      repl.rli.history.pop();
+      repl.rli.history.shift();
     }
   });
 

From b65112f66bdef781f8080db146196884fd93dd87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=91=A8=E6=B1=89=E6=88=90?= <308114274@qq.com>
Date: Fri, 23 Oct 2015 09:26:41 +0800
Subject: [PATCH 2/2] Add 'clearhistory' command
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

run ‘.clearhistory’ to clear repl's history.
---
 README.md |  6 +++++-
 index.js  | 16 +++++++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index c018980..552bee5 100644
--- a/README.md
+++ b/README.md
@@ -21,4 +21,8 @@ run `repl.history` on the command line
 
 A file `~/.node_history` will be created.
 
-I like to alias it to `nr` for node repl
\ No newline at end of file
+I like to alias it to `nr` for node repl
+
+run `.history` to see repl's history.
+
+run `.clearhistory` to clear repl's history.
\ No newline at end of file
diff --git a/index.js b/index.js
index d44a252..a6de6e7 100644
--- a/index.js
+++ b/index.js
@@ -11,7 +11,7 @@ module.exports = function (repl, file) {
   var fd = fs.openSync(file, 'a'), reval = repl.eval;
 
   repl.rli.addListener('line', function(code) {
-    if (code && code !== '.history') {
+    if (code && code !== '.history' && code !==".clearhistory") {
       fs.write(fd, code + '\n');
     } else {
       repl.rli.historyIndex++;
@@ -34,4 +34,18 @@ module.exports = function (repl, file) {
       repl.displayPrompt();
     }
   };
+
+  repl.commands['clearhistory'] = {
+    help : 'Clear the history',
+    action : function() {
+      var fd = fs.openSync(file, 'w');
+      fs.write(fd,"",function(){
+        while(repl.rli.history.length > 0){
+          repl.rli.history.pop();
+        };
+
+        repl.displayPrompt();
+      });
+    }
+  };
 };