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 (
pycompat,
ui as uimod,
)
hgrc = os.environ['HGRCPATH']
f = open(hgrc)
basehgrc = f.read()
f.close()
print(' hgrc settings command line options final result ')
print(' quiet verbo debug quiet verbo debug quiet verbo debug')
for i in range(64):
hgrc_quiet = bool(i & 1 << 0)
hgrc_verbose = bool(i & 1 << 1)
hgrc_debug = bool(i & 1 << 2)
cmd_quiet = bool(i & 1 << 3)
cmd_verbose = bool(i & 1 << 4)
cmd_debug = bool(i & 1 << 5)
f = open(hgrc, 'w')
f.write(basehgrc)
f.write('\n[ui]\n')
if hgrc_quiet:
f.write('quiet = True\n')
if hgrc_verbose:
f.write('verbose = True\n')
if hgrc_debug:
f.write('debug = True\n')
f.close()
u = uimod.ui.load()
if cmd_quiet or cmd_debug or cmd_verbose:
u.setconfig(b'ui', b'quiet', pycompat.bytestr(bool(cmd_quiet)))
u.setconfig(b'ui', b'verbose', pycompat.bytestr(bool(cmd_verbose)))
u.setconfig(b'ui', b'debug', pycompat.bytestr(bool(cmd_debug)))
check = ''
if u.debugflag:
if not u.verbose or u.quiet:
check = ' *'
elif u.verbose and u.quiet:
check = ' +'
print(
(
'%2d %5s %5s %5s %5s %5s %5s -> %5s %5s %5s%s'
% (
i,
hgrc_quiet,
hgrc_verbose,
hgrc_debug,
cmd_quiet,
cmd_verbose,
cmd_debug,
u.quiet,
u.verbose,
u.debugflag,
check,
)
)
)