gtk:text-buffer-begin-irreversible-action (buffer)

buffer -- a gtk:text-buffer object

Denotes the beginning of an action that may not be undone. This will cause any previous operations in the undo/redo queue to be cleared. This should be paired with a call to the gtk:text-buffer-end-irreversible-action function after the irreversible action has completed.

You may nest calls to the gtk:text-buffer-begin-irreversible-action and gtk:text-buffer-end-irreversible-action function pairs.