GtkTextBufferbegin_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 gtk_text_buffer_end_irreversible_action() after the irreversible action has completed.

You may nest calls to gtk_text_buffer_begin_irreversible_action() and gtk_text_buffer_end_irreversible_action() pairs.