Re^5: I usually debug via...

[Aristotle]

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?

[Courage]

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.

[Aristotle]

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.