From e9b3bdac34b1e34f650696ff6c72060955125eac Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Sun, 1 Feb 2015 08:47:24 -0800
Subject: [PATCH] allow VTE mouse access to cells up to 287. see #89.

---
 lib/program.js        | 21 +++++++++++++++++++++
 test/program-mouse.js |  5 +++--
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/lib/program.js b/lib/program.js
index cd7db03..0e2bfd3 100644
--- a/lib/program.js
+++ b/lib/program.js
@@ -401,6 +401,27 @@ Program.prototype._bindMouse = function(s, buf) {
     }
   }
 
+  // XTerm / X10 for buggy VTE
+  // VTE can only send unsigned chars and no unicode for coords. This limits
+  // them to 0xff. However, normally the x10 protocol does not allow a byte
+  // under 0x20, but since VTE can have the bytes overflow, we can consider
+  // bytes below 0x20 to be up to 0xff + 0x20. This gives a limit of 287. Since
+  // characters ranging from 223 to 248 confuse javascript's utf parser, we
+  // need to parse the raw binary.
+  if (this.isVTE && buf[0] === 0x1b && buf[1] === 0x5b && buf[2] === 0x4d) {
+    var b = buf[3]
+      , x = buf[4]
+      , y = buf[5];
+
+    if (x < 0x20) x += 255;
+    if (y < 0x20) y += 255;
+
+    s = '\x1b[M'
+      + String.fromCharCode(b)
+      + String.fromCharCode(x)
+      + String.fromCharCode(y);
+  }
+
   // XTerm / X10
   if (parts = /^\x1b\[M([\x00\u0020-\uffff]{3})/.exec(s)) {
     var b = parts[1].charCodeAt(0)
diff --git a/test/program-mouse.js b/test/program-mouse.js
index 747e5fb..3280eec 100644
--- a/test/program-mouse.js
+++ b/test/program-mouse.js
@@ -36,9 +36,10 @@ program.on('keypress', function(ch, data) {
   console.log(data);
 });
 
-program.on('mousebuf', function(buf) {
+program.on('mouse-debug', function(data) {
   program.cup(20, 0);
-  console.log(buf);
+  data = Array.prototype.slice.call(data);
+  console.log(data);
 });
 
 // program.getCursor(function(err, data) {