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Re^4: I usually debug via...

by Courage (Parson)
on Feb 20, 2005 at 22:29 UTC ( #432907=note: print w/replies, xml ) Need Help??


in reply to Re^3: I usually debug via...
in thread I usually debug via...

Actually I know that vim can embed perl. More to that, I, personally, write a number of vim scripts with perl, and found this technology extremely powerfull.

To say, I saw how someone implements in VIM script a bubble-sort, to save people from feeding lines to 'sort' external program (it is not always available).
Needless to say, this is just one line in Perl.
I do SGML stuff using Perl from inside VIM scripts, among other things.

But VIM probably do not allow step-by-step debugging like Emacs, due to its intention to be compact and not part of OS.

I saw somewhere that "emacs is a good OS but lacks editing capabilities"

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Re^5: I usually debug via...
by Aristotle (Chancellor) on Feb 21, 2005 at 04:26 UTC

    But VIM probably do not allow step-by-step debugging like Emacs, due to its intention to be compact and not part of OS.

    Why do you keep saying that? What makes you think you can't control external processes such as a debugger with Perl? Is it a problem sending the process commands? Maybe you don't think its output can be parsed? Or is it something else?

    Makeshifts last the longest.

      I saw screenshots about emacs doing that but did not saw same for vim.

      I probably did not searched good enough, but it seems to me that VIM developers do not aim such purposes.

      I know implementing debugger is possible, as vim indeed embeds perl and ruby and all that, but I do suspect it is not done, until not convinced otherwise.

        Ah, semantics. “Does not allow” is different from “has no plugin” to me, and you were saying the former but meant the latter. You are right about that, then. To my knowledge, there is no debugger plugin for Vim.

        However, there is a project by the Vim author, called A-A-P, which aims to do the opposite: rather than put an IDE inside Vim, he is working on an IDE (called Agide) which has Vim inside. And that one does have gdb integration.

        Makeshifts last the longest.

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[ambrus]: Corion: yes, you need to implement the io watcher, which should be simple because Prima::File is basically that, and the timer watcher form Prima::Timer
[Corion]: ... or so I think. As I said, I'm somewhat vague on how to make AnyEvent cooperate with a callback-driven IO event loop that gives me callbacks when data is available or can be written
[ambrus]: what push_write thing? I don't think you need that. that's implemented generically by AnyEvent::Handle
[Corion]: ambrus: Yeah, that's what I think as well. But you give me an idea, maybe I should start with implementing the timer, as that should be far simpler and with fewer edge-cases/nasty interaction than the file watcher
[ambrus]: You only provide the watcher part that tells when the handle is readable or writable, not the actual writing and reading.
[Corion]: ambrus: Hmmm. It makes sense that AnyEvent would implement the push_write itself, but I think I don't have a good idea of where the boundary between AnyEvent and the underlying event system lies... Implementing the timer should give me a better idea
[ambrus]: Corion: push_write is in the higher level abstraction of AnyEvent::Handle, not in the watcher
[Corion]: ambrus: Hmm - rereading Prima::File, that merrily coincides with what Prima does - it tells you "you can read", and you're supposed to read from the fh yourself. I thought it called you with the data already read, which would've been harder to integrate
[ambrus]: you just need an io watcher, created by &AnyEvent::Impl:: Whatever::io(...)
[Corion]: So after talking it through with you even while I'm still not entirely clear on where AE ends and my implementation begins, I think I understand that I only need to implement some smaller parts for each functionality I want to support.

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