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Subject: Re: how-to use readline.set_completion_display_matches_hook()?
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From: Jean-Pierre Miceli <j-p@sunrise.ch>
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Date: Thu, 8 Nov 2012 06:53:09 +0100
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Xref: csiph.com comp.lang.python:32932

Thanks,

I will try rl.=20

Have a nice day
J-P

Le 7 nov. 2012 =E0 14:14, Stefan H. Holek a =E9crit :

> On 07.11.2012, at 11:36, Jean-Pierre Miceli wrote:
>=20
>> Hi all,
>>=20
>> I'm working on a tool which enable support of tab completion using =
the
>> readline modul.
>> And I have a problem with set_completion_display_matches_hook =
function
>>=20
>> I've created a display hook function and registered it. It is called
>> and it prints the desire messages. But once it has completed,
>> readline/python does not display the prompt.
>> I've got to press the 'return' key to see the prompt again.
>> What should the display hook function do to return correctly and let
>> the prompt be displayed?
>>=20
>> Example:
>> def completerHook(self, substitution, matches, longest_match_length):
>>   print ""
>>   print "Test of the display hook function"
>>   for i in range(len(matches)):
>>     print matches[i],
>>=20
>> I use Python 2.7.3 and done some tests on Mac OS 10.7 (Lion) and
>> Ubuntu. I got the same issue on both system.
>=20
> This always happens when you print newlines behind readline's back. To =
update the prompt area, you'd have to call rl_forced_update_display() =
which is AFAIK not exposed by the stdlib's readline bindings.
>=20
> There is a more complete implementation of the GNU Readline APIs at =
http://pypi.python.org/pypi/rl. With rl you can fix the prompt by =
calling rl.readline.redisplay(force=3DTrue) after the hook has returned.
>=20
> Hope this helps,
> Stefan
>=20
> --=20
> Stefan H. Holek
> stefan@epy.co.at
>=20