Avoid need to provide list to custom_choices.

shtab/__init__.py

@@ -20,7 +20,7 @@
 from string import Template
 from typing import Any, Dict, List
 from typing import Optional as Opt
-from typing import Sequence, Union
+from typing import Union
 
 # version detector. Precedence: installed dist, git, 'UNKNOWN'
 try:
@@ -112,8 +112,8 @@ def __lt__(self, other: object) -> bool:
 
 
 class CustomChoices:
-    def __init__(self, choices: Sequence[str]) -> None:
-        self.choices = tuple(choices)
+    def __init__(self, *choices: str) -> None:
+        self.choices = choices
         assert all(isinstance(c, str) for c in self.choices)
 
     def bash_choices(self, prefix: str, option_string: str) -> str:
@@ -128,8 +128,8 @@ def tcsh_choices(self) -> str:
         return "(" + " ".join(self.choices) + ")"
 
 
-def custom_choices(choices: List[str]) -> CustomChoices:
-    return CustomChoices(choices)
+def custom_choices(*choices: str) -> CustomChoices:
+    return CustomChoices(*choices)
 
 
 class Optional:

tests/test_shtab.py

@@ -202,7 +202,7 @@ def test_subparser_custom_complete(shell, caplog):
 def test_custom_choices(shell, caplog):
     parser = ArgumentParser(prog="test")
     action = parser.add_argument("--optA")
-    action.complete = shtab.custom_choices(["yes", "no", "maybe"])
+    action.complete = shtab.custom_choices("yes", "no", "maybe")
     with caplog.at_level(logging.INFO):
         completion = shtab.complete(parser, shell=shell)
     print(completion)