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.
import os
from mercurial import (
commands,
extensions,
ui as uimod,
)
ignore = {b'highlight', b'win32text', b'factotum', b'beautifygraph'}
try:
import sqlite3
del sqlite3 # unused, just checking that import works
except ImportError:
ignore.add(b'sqlitestore')
if os.name != 'nt':
ignore.add(b'win32mbcs')
disabled = [ext for ext in extensions.disabled().keys() if ext not in ignore]
hgrc = open(os.environ["HGRCPATH"], 'wb')
hgrc.write(b'[extensions]\n')
for ext in disabled:
hgrc.write(ext + b'=\n')
hgrc.close()
u = uimod.ui.load()
extensions.loadall(u)
extensions.populateui(u)
globalshort = set()
globallong = set()
for option in commands.globalopts:
option[0] and globalshort.add(option[0])
option[1] and globallong.add(option[1])
for cmd, entry in commands.table.items():
seenshort = globalshort.copy()
seenlong = globallong.copy()
for option in entry[1]:
if (option[0] and option[0] in seenshort) or (
option[1] and option[1] in seenlong
):
print("command '" + cmd + "' has duplicate option " + str(option))
seenshort.add(option[0])
seenlong.add(option[1])