From 32b069cf546a30826bc4d458acf1c7facc112fda Mon Sep 17 00:00:00 2001
From: Tim Peters <tim.peters@gmail.com>
Date: Mon, 22 Apr 2002 18:43:49 +0000
Subject: [PATCH] SF bug 546078:  IDLE calltips cause application error.
 Assorted crashes on Windows and Linux when trying to display a very long
 calltip, most likely a Tk bug.  Wormed around by clamping the calltip display
 to a maximum of 79 characters (why 79? why not ...).

Bugfix candidate, for all Python releases.
---
 Tools/idle/CallTipWindow.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Tools/idle/CallTipWindow.py b/Tools/idle/CallTipWindow.py
index d253fa5969a..db1e346c55d 100644
--- a/Tools/idle/CallTipWindow.py
+++ b/Tools/idle/CallTipWindow.py
@@ -14,7 +14,13 @@ class CallTip:
         self.x = self.y = 0
 
     def showtip(self, text):
+        # SF bug 546078:  IDLE calltips cause application error.
+        # There were crashes on various Windows flavors, and even a
+        # crashing X server on Linux, with very long calltips.
+        if len(text) >= 79:
+            text = text[:75] + ' ...'
         self.text = text
+
         if self.tipwindow or not self.text:
             return
         self.widget.see("insert")