only set readline startup hook if available

IPython/iplib.py

@@ -6,7 +6,7 b' Requires Python 2.3 or newer.'
 
 This file contains all the classes and helper functions specific to IPython.
 
-$Id: iplib.py 2385 2007-05-24 20:18:08Z vivainio $
+$Id: iplib.py 2404 2007-05-28 12:57:35Z vivainio $
 """
 
 #*****************************************************************************
@@ -1603,8 +1603,10 b' want to merge them back into the new files.""" % locals()'
         # Mark activity in the builtins
         __builtin__.__dict__['__IPYTHON__active'] += 1
 
+        if readline.have_readline:
+            self.readline_startup_hook(self.pre_readline)
         # exit_now is set by a call to %Exit or %Quit
-        self.readline_startup_hook(self.pre_readline)
+        
         while not self.exit_now:
             if more:
                 prompt = self.hooks.generate_prompt(True)

exesetup.py

@@ -6,6 +6,11 b''
 
 - install pyreadline *package dir* in ipython root directory by running:
   
+svn co http://ipython.scipy.org/svn/ipython/pyreadline/branches/maintenance_1.3/pyreadline/  
+wget http://ipython.scipy.org/svn/ipython/pyreadline/branches/maintenance_1.3/readline.py
+
+OR (if you want the latest trunk):  
+  
 svn co http://ipython.scipy.org/svn/ipython/pyreadline/trunk/pyreadline
 
 - Create the distribution in 'dist' by running "python exesetup.py py2exe"