SVN pre-commit filter (Was: Re: WTF?)

[Joern Rennecke <amylaar at spamcop dot net>]

Quoting Richard Earnshaw <rearnsha@arm.com>:
> An SVN pre-commit filter (default on, disabled by SVN attribute if
> needed) should instead just reject files that have trailing white space.

I think a better mechanism to deal with exceptions is to have a property
that describes the current misformatting (or unusual formatting for some
test cases / Makefiles).  I.e. if a file is known to have N lines with
trailing whitespace, M with spaces-for-tabs, K with
spaces-hidden-in-front-of-tabs, and L with carriage return, a patch will
be rejected if it increases N, M, K or L.  If it decreases it, the count
property can be auto-adjusted to prevent regressions.  And if you really
have to, you can adjust a property by hand before checking in a patch
that increases one of the counts.