"Horst H. von Brand" <vonbrand(a)inf.utfsm.cl> writes:
A: The original configuration as given by the installed package
B: The installed configuration file (as modified by the user)
C: The new configuration file.
If B == A, rpm can safely replace the configuration file by C.
If A != B, the user changed something, and the changes have to be ported
forward by hand.
If C == A and B != A, then there's no point in replacing the
configuration file, and doing so is a great pain. It took forever for
Fedora to get this right, but since 7 or so it has been working very
nicely. (Except when upstream puts the user guide in the configuration
files and then reformats or spell checks).
/Benny