ido-make-file-list-hook

ido-make-file-list-hook is a variable defined in `ido.el'.
Its value is

nil

• This variable may be risky if used as a file-local variable.

Documentation:
List of functions to run when the list of matching files is created.
Each function on the list may modify the dynamically bound variable
`ido-temp-list' which contains the current list of matching files.

You can customize this variable.