[IPython-dev] Patches to use pydb instead of pdb for debugging

[R. Bernstein]

One more file to be patched, the Emacs interface, ipython.el, since I
changed the debugger prompt when using pydb:

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R. Bernstein writes:
 > Hi - 
 > 
 > Sorry if I've been out of touch for awhile. I just looked to see what
 > it would take to change the current svn sources to use pydb
 > (http://bashdb.sf.net/pydb) when it is available instead of the stock
 > pdb. I was very pleasantly pleased to find that, at least for python
 > 2.5, the changes are fairly small.
 > 
 > (Last time I attempted doing this which was earlier this year, changes
 > were much more onerous and extensive. It looks like the code has
 > greatly been cleaned up. THANKS!)
 > 
 > Enclosed find a patch. Here is basically what happens. First I'm only
 > attempting this if Python 2.5 is installed. (The idea is to start
 > small and simple and if this is desirable/successful we can add other
 > Python versions later). I try to import pydb; if that fails then pdb
 > is imported. To make it clearer to folks which debugger they've got,
 > the prompt is also changed to "ipydb>" instead of "ipdb>". 
 > 
 > Note that in pydb we generally add a set of parenthesis around the
 > prompt whenever the debugger is called recursively (command "debug"
 > inside of the debugger).
 > 
 > Since pydb has a "restart" command which doesn't make sense in the
 > ipython contexts, that is made the same thing as "quit". Probably
 > better would be to issue a message indicating what's up (and then
 > quit). Perhaps later.
 > 
 > Thanks
 > 
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