gh-138525: Support single-dash long options and prefix_chars in BooleanOptionalAction #138692
+102
−4
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-no-foo is generated for -foo.
++no-foo is generated for ++foo.
/no-foo is generated for /foo.
argparse.BooleanOptionalAction
silently failed when used with parser whoseprefix_chars
has no'-'
#138525📚 Documentation preview 📚: https://cpython-previews--138692.org.readthedocs.build/