Function public_parent_module 

pub fn public_parent_module(module_name: &str) -> String

Extract the public parent module name from a module path.

If the module path contains hidden components (starting with ‘_’), returns the path up to (but not including) the first hidden component. If no hidden components exist, returns the original name.

Examples

• "generate_init_py._core" → "generate_init_py"
• "pkg._internal.core" → "pkg"
• "pkg.mod._hidden" → "pkg.mod"
• "pkg.mod" → "pkg.mod" (unchanged)
• "_hidden" → "" (empty, entire module is hidden)