"Default function to use for `completion-in-region-function'.
Its arguments and return value are as specified for `completion-in-region'.
This respects the wrapper hook `completion-in-region-functions'."
"Default function to use for `completion-in-region-function'.
Its arguments and return value are as specified for `completion-in-region'.
This respects the wrapper hook `completion-in-region-functions'."