xml diff?

Mark D. Anderson mda at discerning.com
Mon Dec 21 00:18:01 GMT 1998

Suppose I want the "diff" between two xml files.

I can imagine a few approaches:

- very-cheasy:
just use "diff"

- almost-as-cheasy:
first do s/\>/\>\nUNIQUE/g to put the tags on separate lines,
then use "diff", then restore by s/\nUNIQUE//g

- graph-theoretic:
surely there must be some CS work on algorithms for finding
the least cost path between two trees, expressed as a sequence
of operations? the simplest is with just the operations of
add/delete of subtrees, but move and copy are interesting too.


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