From ff7fc6f27060015f52ae2d71eeaa5b7428bc1b4e 2014-01-23 21:50:25
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2014-01-23 21:50:25
Subject: [PATCH] Merge pull request #4851 from minrk/tooltip-re

fix tooltip token regex for single-character names
---

diff --git a/IPython/html/static/notebook/js/tooltip.js b/IPython/html/static/notebook/js/tooltip.js
index e840184..659dcf5 100644
--- a/IPython/html/static/notebook/js/tooltip.js
+++ b/IPython/html/static/notebook/js/tooltip.js
@@ -197,7 +197,7 @@ var IPython = (function (IPython) {
     }
 
     // easy access for julia monkey patching.
-    Tooltip.last_token_re = /[a-z_][0-9a-z._]+$/gi;
+    Tooltip.last_token_re = /[a-z_][0-9a-z._]*$/gi;
 
     Tooltip.prototype.extract_oir_token = function(line){
         // use internally just to make the request to the kernel
diff --git a/IPython/html/tests/casperjs/test_cases/tooltip.js b/IPython/html/tests/casperjs/test_cases/tooltip.js
new file mode 100644
index 0000000..0b3a859
--- /dev/null
+++ b/IPython/html/tests/casperjs/test_cases/tooltip.js
@@ -0,0 +1,19 @@
+//
+// Test the tooltip
+//
+casper.notebook_test(function () {
+    var token = this.evaluate(function() {
+        return IPython.tooltip.extract_oir_token("C(");
+    });
+    this.test.assertEquals(token, ["C"], "tooltip token: C");
+
+    token = this.evaluate(function() {
+        return IPython.tooltip.extract_oir_token("MyClass(");
+    });
+    this.test.assertEquals(token, ["MyClass"], "tooltip token: MyClass");
+
+    token = this.evaluate(function() {
+        return IPython.tooltip.extract_oir_token("foo123(");
+    });
+    this.test.assertEquals(token, ["foo123"], "tooltip token: foo123");
+});