Add suggestion for more robust module path parsing

Author: Essoz

SUGGESTION.md

@@ -0,0 +1,59 @@
+# Suggestion for PR #137
+
+The current fix using `rsplit()` is better than the original `split()`, but it can still fail in edge cases where directory names repeat patterns.
+
+## The Problem
+Consider a file path like `/abc/abcd/abc/abcd/file.py` where `root_module = "abc"`:
+- Current approach: `rsplit(f"/abc/", 1)` splits on the last `/abc/`, producing `abcd/file.py`
+- Result: `abc.abcd.file` instead of the correct `abc.abcd.abc.abcd.file`
+
+## More Robust Solution
+Instead of relying on string parsing with the module name, get the actual filesystem location of the root module and remove it from the file path:
+
+```python
+def get_module_path_from_file_path(file_path: str, root_module: str) -> str | None:
+    import importlib.util
+    
+    # Validate inputs
+    if (
+        not file_path.endswith(".py")
+        or not os.path.exists(file_path)
+        or f"/{root_module}/" not in file_path
+    ):
+        return None
+    
+    # Get the actual location of the root module
+    try:
+        spec = importlib.util.find_spec(root_module)
+        if spec is None or spec.origin is None:
+            return None
+        
+        module_dir = os.path.dirname(spec.origin)
+        # Go up one level if it's an __init__.py
+        if os.path.basename(spec.origin) == "__init__.py":
+            module_dir = os.path.dirname(module_dir)
+    except (ImportError, AttributeError, ValueError):
+        return None
+    
+    # Get relative path from module directory
+    try:
+        relative_path = os.path.relpath(file_path, module_dir)
+    except ValueError:
+        # Paths on different drives on Windows
+        return None
+    
+    # Convert to module path
+    if relative_path.endswith(".py"):
+        relative_path = relative_path[:-3]
+    module_path = root_module + "." + relative_path.replace(os.sep, ".")
+    
+    return module_path
+```
+
+## Benefits
+- **No string parsing vulnerability** - Works regardless of repeated naming patterns
+- **Uses actual filesystem paths** - More reliable and maintainable
+- **Handles edge cases** - Works with __init__.py files and package structures
+- **More explicit** - The intent is clearer to future maintainers
+
+This approach is immune to all naming collision edge cases!