On Fri, Oct 28, 2011 at 8:54 PM, Ozgur Akgun <ozgurakgun@gmail.com> wrote:

Hi.

On 27 October 2011 13:49, dokondr <dokondr@gmail.com> wrote:

Please advise on Haskell libraries to compare trees in textual representation.
I need to compare both structure and node contents of two trees, find similar sub-trees, and need some metric to measure distance between two trees.

This might help: http://hackage.haskell.org/package/gdiff-1.0

Best,
Ozgur

This is interesting. Just putting some thoughts here. Please comment.

I am a user of emacs org-mode http://orgmode.org/.
Basically org imposes a tree structure onto plain text and when that is appropriate its quite a nifty tool. Recently there was some discussion on the org list that diffs of org files were less than useful because while org understands hierarchical structure, diff doesn't.

I wonder what would be involved in setting up a bi-directional pipe between emacs and haskell so that orgmode could use gdiff's findings?