I have a folder hardcoded in variable:
(defvar folder-start-mine "/path/to/start/folder/")
Then I want to interactively define new non-existing subfolder name:
(defun my-new-defun (sel-subdir) (interactive "GNew folder: " folder-start-mine) (mkdir sel-subdir) ... do some stuff with sel-subdir ... )
The file navigator in minibuffer starts in home folder and I want it to start in folder-start-mine.