templates: add filter to reverse list
The filter supports only lists because for lists, it’s straightforward to
implement. Reversing text doesn’t seem very useful and is hard to implement.
Reversing the bytes would break multi-bytes encodings. Reversing the code
points would break characters consisting of multiple code points. Reversing
graphemes is non-trivial without using a library not included in the standard
library.
# tiny extension to report phase changes during transaction
def reposetup(ui, repo):
def reportphasemove(tr):
for revs, move in sorted(tr.changes[b"phases"], key=lambda r: r[0][0]):
for rev in revs:
if move[0] is None:
ui.write(
(
b'test-debug-phase: new rev %d: x -> %d\n'
% (rev, move[1])
)
)
else:
ui.write(
(
b'test-debug-phase: move rev %d: %d -> %d\n'
% (rev, move[0], move[1])
)
)
class reportphaserepo(repo.__class__):
def transaction(self, *args, **kwargs):
tr = super(reportphaserepo, self).transaction(*args, **kwargs)
tr.addpostclose(b'report-phase', reportphasemove)
return tr
repo.__class__ = reportphaserepo