Treatment of whitespace is inconsistent/inconvenient

Consider a python snippet like the following with the cursor placed at the caret:

print( "a" , "b" , "c" )
            ^

If you try to select parameter.inner or parameter.outer, nothing will happen.

If the cursor is in a different location:

print( "a" , "b" , "c" )
                ^

Now parameter.outer will select something (the "b" parameter up to its comma, but not its leading space),
but parameter.inner still does nothing.

This is probably technically correct according to the way the syntax tree maps to tokens, but it's not very convenient for editing. You'll get similar behavior if you happen to be in whitespace for other text objects, e.g.:

def foo(bar):
    print(bar)
  ^

Here function.outer will select the entire function and body as expected, but function.inner selects nothing.

When the cursor is on whitespace, it should probably "snap" to the next non-whitespace token before looking for the surrounding text object.

Reproduce the Python examples with the cursor in whitespace and compare parameter.inner, parameter.outer, and function.inner behavior. Trace the text-object handling for whitespace cursor positions and verify that the completed behavior selects the surrounding object after snapping to the next non-whitespace token.