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.
# extension to emulate invoking 'patch.internalpatch()' at the time
# specified by '[fakepatchtime] fakenow'
from mercurial import (
extensions,
patch as patchmod,
registrar,
)
from mercurial.utils import dateutil
configtable = {}
configitem = registrar.configitem(configtable)
configitem(
b'fakepatchtime',
b'fakenow',
default=None,
)
def internalpatch(
orig,
ui,
repo,
patchobj,
strip,
prefix=b'',
files=None,
eolmode=b'strict',
similarity=0,
):
if files is None:
files = set()
r = orig(
ui,
repo,
patchobj,
strip,
prefix=prefix,
files=files,
eolmode=eolmode,
similarity=similarity,
)
fakenow = ui.config(b'fakepatchtime', b'fakenow')
if fakenow:
# parsing 'fakenow' in YYYYmmddHHMM format makes comparison between
# 'fakenow' value and 'touch -t YYYYmmddHHMM' argument easy
fakenow = dateutil.parsedate(fakenow, [b'%Y%m%d%H%M'])[0]
for f in files:
repo.wvfs.utime(f, (fakenow, fakenow))
return r
def extsetup(ui):
extensions.wrapfunction(patchmod, 'internalpatch', internalpatch)