ipdb doesn't work in vim console

Question

ipdb works fine in the shell, but I want to debug under vim, after I set ipdb.set_trace(), and then !python %, the console below gives me this messy prompt, any idea?

romainl · Accepted Answer · 2012-09-14 08:18:00Z

4

I guess you are using a GUI Vim. GVim? MacVim? The pseudo terminal you get when executing external tools is not, has never been and will probably never be able to understand the escape characters you see. That means no color and no ncurses-style widgets.

You'd better run it in a separate terminal or find a way to disable colors in iPython.

answered Sep 14, 2012 at 8:18

romainl

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5 Comments

romainl Over a year ago

So there's no way to make it look pretty. Use an external terminal instead.

ZyX Over a year ago

@romainl Don’t say “no way”, you can patch vim. You could have patched it even if it was closed source. Just understanding colors is simple (though I did it in VimL, not in C).

romainl Over a year ago

@ZyX, do you have a usable solution to this? If so I'd really like to try it. I wrote "no way" but I meant "no buit-in way such as :set colorshell". I'm really curious about your solution. I remember googling a bit about that subject 2 years ago without any success.

ZyX Over a year ago

@romainl And I have a plugin which when being fed with system() output will produce colored output using :echo, preserving not only color but also some other specials (AFAIR only \r). But it is in alpha stage and not currently developed. Precisely, this one.

romainl Over a year ago

Yes I just did a google search with your username and found it 3 mins ago. You are right that ConqueTerm could be used as a workaround but it's really far from perfect. Well, using an external shell is not perfect either.

ZyX · Accepted Answer · 2012-09-14 13:17:56Z

1

If you don’t really want to patch vim as well as run in a separate terminal as @romainl suggests then there is Conque plugin which provides a way to have colored pseudo-terminal in a vim buffer. You have to run

ConqueTerm(|[V]Split|Tab) sh

and within it run

python path/to/file.py

(no % is possible) though. It can be narrowed down to a mapping:

nnoremap <expr> ,p ":\<C-u>ConqueTermVSplit sh\n\<C-o>:call feedkeys('python '.shellescape(bufname(".bufnr("%").")).\"\\n\")\n"

answered Sep 14, 2012 at 13:17

ZyX

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Comments

leifdenby · Accepted Answer · 2013-01-05 18:32:35Z

1

I have created my own workaround for this which may be valuable to you depending on how you use ipdb. The idea is that you can pass in no_colors=True to set_trace() and that way the interactive debugger will not produce any colour output. I have also enabled this argument for launch_ipdb_on_exception.

This means that you can do:

import ipdb
ipdb.set_trace(no_colors=True)

And the output looks fine in MacVim.

To use this you will have to use my version of ipdb, which is here, actual relevant commit if you want to see what I did is here.

It turns out that ipdb is merely a convient way of accessing ipython.core.debugger, Pdb the actual debugger is defined there.

answered Jan 5, 2013 at 18:32

leifdenby

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hugo24 · Accepted Answer · 2013-10-01 08:42:05Z

1

For windows users i suggest ConEmu. Works perfectly with ipdb (highlighting, auto-complete, ...)

answered Oct 1, 2013 at 8:42

hugo24

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