Fix incorrect passing of flags to re.sub

pallets · Aug 17, 2023 · af2da1e · af2da1e
1 parent bb6a872
commit af2da1e
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diff --git a/CHANGES.rst b/CHANGES.rst
@@ -5,6 +5,8 @@ Version 8.1.7
 
 Unreleased
 
+-   Fix issue with regex flags in shell completion. :issue:`2581`
+
 
 Version 8.1.6
 -------------

diff --git a/src/click/shell_completion.py b/src/click/shell_completion.py
@@ -230,7 +230,7 @@ def func_name(self) -> str:
         """The name of the shell function defined by the completion
         script.
         """
-        safe_name = re.sub(r"\W*", "", self.prog_name.replace("-", "_"), re.ASCII)
+        safe_name = re.sub(r"\W*", "", self.prog_name.replace("-", "_"), flags=re.ASCII)
         return f"_{safe_name}_completion"
 
     def source_vars(self) -> t.Dict[str, t.Any]: