Tomas Janousek 3dbdc51158 X.U.ExtensibleConf: Perform 'add' before modifying in once(M)
This better matches the documentation.

It is still, however, considered bad practice to rely on the order of
these operations. `f` isn't meant to touch any extensible configuration.
If it happens to do so anyway, it no longer loops. :-)
2021-10-19 22:57:50 +01:00
..