hook to limit size of changeset(s)?

[Charles Pope]

>>>>
It appeared to be a good idea to have a check that no very large files
are commited (such as binaries) etc. So I thought I could write a hook
(using pretxncommit or pretxnchangegroup) that that will look at the
size of the patch of the latest attempted commit (i.e. something like
"hg log -p $HG_NODE | wc --bytes" and combines this with an if
statement to see whether it exceeds a given upper size limit. This
works (for changes in non-binary files) and for the examples I have
tested.
<<<<

I am not sure this directly helps, but I have a very simple solution for
limiting file sizes, which I think may have come from a suggestion here.

find -size -99M | hg add

This is for automated source folders versioning (for backup puposes), and I
just wanted to ensure I didn't try to version any very large files.

I am sure there will be a more specific solution along the way...

Charles
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