extensions: recommend against using wrapfunction for repo methods
Instead, all extensions should use the "dynamic subclass" trick:
subclass repo.__class__ and then replace repo.__class__ with your new
subclass. This avoids conflicts that happen when one extension uses
wrapfunction and another uses subclassing to extend the same method of
localrepository.
#!/bin/sh
# test update logic when there are renames
# update with local changes across a file rename
hg init a
cd a
echo a > a
hg add a
hg ci -m a
hg mv a b
hg ci -m rename
echo b > b
hg ci -m change
hg up -q 0
echo c > a
hg up
cd ..