[rt-devel] Reason for code overlays

Todd Chapman rt at chaka.net
Thu Feb 5 13:00:54 EST 2004

Code overlays are to minimize the diffing you have to do with
each upgrade. It allows you to only worry about changes in
the areas that you customized. It's easier than maintaining
your own branch and doing merges with every new release. But
you don't have to use them if you don't want to...


On Thu, Feb 05, 2004 at 07:01:25PM +0100, Florian Weimer wrote:
> I have some issues with the code overlay mechanism.  We run a slightly
> modified version of RT3 with just a few added/changed/deleted lines.  I
> don't think it's a good idea to copy the surrounding subroutines to an
> overlay file and change it there.  If the original changed during an RT
> upgrade, we'd override these changes.
> Am I missing something, or is the overlay mechanism mainly for those who
> haven't yet discovered version control software? 8-)
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