view tests/test-demandimport.py.out @ 26312:60558319ce72

ui: avoid mutable default arguments

I almost introduced a bug around this code by accidentally mutating a default
argument. There's no reason for these to exist.

It is OK to not assign {} to environ in ui.system because util.system knows how
to deal with that.

os = <unloaded module 'os'>
os.system = <built-in function system>
os = <module 'os' from '?'>
util = <unloaded module 'util'>
util.system = <function system at 0x?>
util = <module 'mercurial.util' from '?'>
util.system = <function system at 0x?>
fred = <unloaded module 're'>
re = <unloaded module 'sys'>
fred = <unloaded module 're'>
fred.sub = <function sub at 0x?>
fred = <proxied module 're'>
re = <unloaded module 'sys'>
re.stderr = <open file '<whatever>', mode 'w' at 0x?>
re = <proxied module 'sys'>
node = <module 'mercurial.node' from '?'>