begin_irreversible_action

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 [method@Gtk.TextBuffer.end_irreversible_action] after the irreversible action has completed.

You may nest calls to begin_irreversible_action and end_irreversible_action pairs.

Parameters:

this	a `GtkTextBuffer`