[IPython-dev] [Pythonmac-SIG] readline support for OS X Leopard

Brian Granger ellisonbg.net@gmail....
Fri Oct 26 21:19:50 CDT 2007


The rlineimpl.py module is the place in python where readline gets
imported.  I would look there and also I would look to see where
ipython is doing its equivalent of parse_and_bind.

Brian

On 10/26/07, Noah Gift <noah.gift@gmail.com> wrote:
> Ed,
>
> You are a genius! Thanks, I totally forgot you told me that.
>
> So for the record when you launch IPython:
>
> import readline
> readline.parse_and_bind ("bind ^I rl_complete")
>
> Then do something like:
>
> import os
>
> and you will get
>
>
> In [5]: os.
>  Display all 234 possibilities? (y or n)
>
> Ok, what is the easiest way to get IPython to automatically do this?  This
> would be great to document.
>
>
> Also, (shamelessly off-topic), if anyone has GVim working...let me know,
> cough, it is for Python and it is on Mac :)
>
>
> On 10/26/07, emoy@apple.com <emoy@apple.com> wrote:
> >
> > It right there in my original message (and in the python man page).  You
> have to use EditLine syntax:
> >
> >
> > readline.parse_and_bind ("bind ^I rl_complete")
> >
> >
> > Ed
> >
> >
> >
> >
> > On Oct 26, 2007, at 6:46 PM, Noah Gift wrote:
> >
> > I was just going to say the same thing.  Getting this to work and then
> GVim, and I will be quite happy.
> >
> >
> > On 10/26/07, Boyd Waters < bwaters@nrao.edu > wrote:
> > > Oops, I spoke too soon when I said that readline support with
> > > Leopard's Python works for me with IPython.
> > >
> > > Many things DO work, but tab-completion does NOT.
> > >
> > > I am trying to get tab completion working.
> > >
> > > Forget IPython, just try this "unit test" of rlcompleter with the
> > > Python that ships with Leopard:
> > >
> > > See http://docs.python.org/lib/module-rlcompleter.html
> > >
> > >   Launch python from a Terminal shell prompt.
> > >   at the prompt, type the following commands:
> > >   import rlcompleter
> > >   import readline
> > >   readline.parse_and_bind("tab: complete")
> > >
> > >   Now, try it out: start some input, then hit the Tab key to get some
> > > possible completions:
> > >
> > >   readline. <TAB PRESSED>
> > >
> > >   The tab is passed as raw input, and the completer does not give any
> > > completions.
> > >
> > >   Tried with both Terminal and xterm.
> > >
> > >
> > > Reported as Apple Bug # 5563035
> > >
> > > I've also asked the IPython devs for help - and volunteered to get
> > > this resolved somehow for them -- but I don't think it's an IPython
> > > problem (since you can do this from "raw" interactive python).
> > >
> > > Here's hoping...
> > >
> > >
> > >   - boyd
> > >
> > >
> > > Boyd Waters
> > > Mac Programmer
> > > National Radio Astronomy Observatory
> > > http://www.aoc.nrao.edu/~bwaters
> > >
> > >
> > > On Oct 22, 2007, at 12:35 PM, Noah Gift wrote:
> > >
> > > > Edward,
> > > >
> > > > Thanks for the information.  Do you know of a way to get IPython to
> > > > use edline instead?  IPython is growing in popularity for Python
> > > > programmers, and it seems like getting a way forward that works with
> > > > edline makes sense, or maybe I am wrong and people will need to just
> > > > manually install readline themselves.
> > > >
> > > > Noah
> > > >
> > > > On 10/22/07, Edward Moy < emoy@apple.com> wrote:
> > > > On Oct 21, 2007, at 10:51 PM, Noah Gift wrote:
> > > >
> > > >> I have been getting ready for the official leopard release in a few
> > > >> days, and have been a bit worried about readline support.  I forgot
> > > >> what I did to get it to work for IPython, which I absolutely cannot
> > > >> live without anymore.  Is there a plan for a Leopard binary that
> > > >> fixes readline, or can I help someone prepare some documentation on
> > > >> getting readline working properly.  I don't have a lot of time
> > > >> during the next couple of weeks to get into compile hell, but if
> > > >> someone has any easy fix to get readline to work, I would greatly
> > > >> appreciate it.
> > > >
> > > >
> > > > The installed version of python on Leopard will actually have
> > > > readline support turned on by default, but it uses the EditLine
> > > > (libedit) library, not the GNU Readline (due to licensing reasons).
> > > > While functionally equivalent, the command syntax is different.
> > > > From the python(1) man page:
> > > >
> > > >
> > > > INTERACTIVE INPUT EDITING AND HISTORY SUBSTITUTION
> > > >        The Python inteterpreter supports editing of the current
> > > > input line and
> > > >        history substitution, similar to facilities found in the Korn
> > > > shell and
> > > >        the  GNU  Bash shell.  However, rather than being implemented
> > > > using the
> > > >        GNU Readline library, this Python interpreter  uses  the
> > > > BSD  EditLine
> > > >        library editline(3) with a GNU Readline emulation layer.
> > > >
> > > >
> > > >        The  readline  module  provides the access to
> the EditLine
> > > > library, but
> > > >        there are a few major differences compared to a traditional
> > > > implementa-
> > > >        tion  using  the  Readline  library.   The
> command language
> > > > used in the
> > > >        preference files is that of EditLine, as described in
> > > > editrc(5) and not
> > > >        that   used  by  the  Readline  library.
> This  also  means
> > > > that  the
> > > >        parse_and_bind() routines uses EditLine commands.  And  the
> > > > preference
> > > >        file itself is ~/.editrc instead of ~/.inputrc.
> > > >
> > > >
> > > >        For  example,  the rlcompleter module, which defines a
> > > > completion func-
> > > >        tion for the  readline  modules,  works
> correctly  with
> > > > the  EditLine
> > > >        libraries, but needs to be initialized somewhat differently:
> > > >
> > > >
> > > >               import rlcompleter
> > > >               import readline
> > > >               readline.parse_and_bind ("bind ^I rl_complete")
> > > >
> > > >
> > > >        For vi mode, one needs:
> > > >
> > > >
> > > >               readline.parse_and_bind ("bind -v")
> > > >
> > > >
> > > >
> --------------------------------------------------------------------------
> > > > Edward Moy
> > > > Apple Computer, Inc.
> > > > emoy@apple.com
> > > >
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Pythonmac-SIG maillist  -  Pythonmac-SIG@python.org
> > > > http://mail.python.org/mailman/listinfo/pythonmac-sig
> > >
> > >
> >
> >
> >
>
>
> _______________________________________________
> Pythonmac-SIG maillist  -  Pythonmac-SIG@python.org
> http://mail.python.org/mailman/listinfo/pythonmac-sig
>
>


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