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Have a look at the 'Leo' editor, it has views on your source using 'cloned' nodes. It even allows you to group all the code around a bug and a fix together, document the whole thing and never move any of the original code around.

It's a pretty neat literate programming tool.

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Leo is really nice and I've used it on real projects to refactor and study my architecture.

I'd actually say that Leo is horrible except for the one feature that makes it amazing (outlines). I find myself wanting to implement outlines in Vim but knowing I never will.

That's a fair assessment too. I don't use Leo for the general-purpose work and new code because it gets in the way when you know what you want to write. But it does work well if you need to learn what a large, spread out body of code is doing. Just realigning the position of code helps to spot some previously hidden repetition.

I would probably use it more if I wrote some scripts to autogen the outlines for entire codebases.

Take a look at Code Browser: http://code-browser.sf.net too - it does outlining in a minimalistic way that I really like.

For those who like leo/literate programming, have a look at code-browser:

http://tibleiz.net/code-browser/

More powerful overall. It implements elastic tabstops too! Little unknown gem. good for outlining a book/paper also.

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