On Wed, 25 Aug 2010, Thomas Sewell wrote:
Finally, the change to inspect_pair is indeed just a bugfix. I don't
this check is needed for the simplifier driven version of hyp_subst
anyway, so the bug shouldn't often be seen.
Often it is hard to tell what is a bug or an obscure feature required like
that by some other tool.
Anyway, I recommend to try that tiny bit of the change on all existing
Isabelle + AFP theories. Then we can apply it independently, with a more
informative log message that "fixed bug", though.
Makarius
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