Document --enable-incomplete-feature possible values in "mypy --help"

Fixes python#14452
dfroger · Dec 13, 2023 · 7359704 · 7359704
1 parent 0567da9
commit 7359704
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diff --git a/docs/source/command_line.rst b/docs/source/command_line.rst
@@ -995,7 +995,7 @@ format into the specified directory.
 Enabling incomplete/experimental features
 *****************************************
 
-.. option:: --enable-incomplete-feature FEATURE
+.. option:: --enable-incomplete-feature {PreciseTupleTypes}
 
     Some features may require several mypy releases to implement, for example
     due to their complexity, potential for backwards incompatibility, or

diff --git a/mypy/main.py b/mypy/main.py
@@ -1010,7 +1010,7 @@ def add_invertible_flag(
     parser.add_argument(
         "--enable-incomplete-feature",
         action="append",
-        metavar="FEATURE",
+        metavar="{" + ",".join(sorted(INCOMPLETE_FEATURES)) + "}",
         help="Enable support of incomplete/experimental features for early preview",
     )
     internals_group.add_argument(