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-rw-r--r--mesonbuild/mesonmain.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/mesonbuild/mesonmain.py b/mesonbuild/mesonmain.py
index e7005e9..f80dfdd 100644
--- a/mesonbuild/mesonmain.py
+++ b/mesonbuild/mesonmain.py
@@ -67,7 +67,8 @@ class CommandLineParser:
self.add_command('unstable-coredata', munstable_coredata.add_arguments, munstable_coredata.run,
help=argparse.SUPPRESS)
- def add_command(self, name, add_arguments_func, run_func, help, aliases=[]):
+ def add_command(self, name, add_arguments_func, run_func, help, aliases=None):
+ aliases = aliases or []
# FIXME: Cannot have hidden subparser:
# https://bugs.python.org/issue22848
if help == argparse.SUPPRESS: