From e49be4768be8c84daca6c98a1aa344bc5065590e Mon Sep 17 00:00:00 2001
From: Johan Euphrosine <proppy@aminche.com>
Date: Wed, 25 Aug 2010 10:18:24 +0200
Subject: [PATCH] add readline support for meta-d

---
 lib/readline.js              | 16 ++++++++++++++++
 test/simple/test-readline.js | 21 +++++++++++++++++++--
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/lib/readline.js b/lib/readline.js
index e387194d6f..10e614f765 100644
--- a/lib/readline.js
+++ b/lib/readline.js
@@ -377,6 +377,22 @@ Interface.prototype._ttyWrite = function (b) {
 	}
 	this.cursor = this.line.length;
 	this._refreshLine();
+      } else if (b[1] === 100 && this.cursor < this.line.length) { // meta-d delete forward word
+	next_word = this.line.slice(this.cursor, this.line.length)
+		      .search(/\w/);
+	if (next_word !== -1) {
+	  next_non_word = this.line.slice(this.cursor + next_word, this.line.length)
+			    .search(/\W/);
+	  if (next_non_word !== -1) {
+	    this.line = this.line.slice(this.cursor + next_word + next_non_word);
+	    this.cursor = 0;
+	    this._refreshLine();
+	    break;
+	  }
+	}
+	this.line = '';
+	this.cursor = 0;
+	this._refreshLine();
       } else if (b[1] === 91 && b[2] === 68) { // left arrow
         if (this.cursor > 0) {
           this.cursor--;
diff --git a/test/simple/test-readline.js b/test/simple/test-readline.js
index 9ed68e3d59..edc830fe12 100644
--- a/test/simple/test-readline.js
+++ b/test/simple/test-readline.js
@@ -7,7 +7,8 @@ var key = {
     home: [27, 91, 72],
     end: [27, 91, 70],
     metab: [27, 98],
-    metaf: [27, 102]
+    metaf: [27, 102],
+    metad: [27, 100]
   },
   gnome: {
     home: [27, 79, 72],
@@ -88,4 +89,20 @@ written_bytes_length = rl.written_bytes.length;
 rl.write(key.xterm.metab);
 assert.equal(0, rl.cursor);
 refreshed = written_bytes_length !== rl.written_bytes.length;
-assert.equal(true,  refreshed);
\ No newline at end of file
+assert.equal(true,  refreshed);
+
+rl = readlineFakeStream();
+rl.write('foo bar.hop/zoo');
+rl.write(key.xterm.home);
+rl.write(key.xterm.metad);
+assert.equal(0, rl.cursor);
+assert.equal(' bar.hop/zoo', rl.line);
+rl.write(key.xterm.metad);
+assert.equal(0, rl.cursor);
+assert.equal('.hop/zoo', rl.line);
+rl.write(key.xterm.metad);
+assert.equal(0, rl.cursor);
+assert.equal('/zoo', rl.line);
+rl.write(key.xterm.metad);
+assert.equal(0, rl.cursor);
+assert.equal('', rl.line);