gtk:text-buffer-delete-mark (buffer mark)

buffer -- a gtk:text-buffer object
mark -- a gtk:text-mark object, or a string for the name of a mark in the text buffer

Deletes the mark, so that it is no longer located anywhere in the text buffer. Removes the reference the text buffer holds to the mark. Most operations on the mark become invalid, until it gets added to a text buffer again with the gtk:text-buffer-add-mark function. Use the gtk:text-mark-deleted function to find out if a mark has been removed from its text buffer. The "mark-deleted" signal will be emitted as notification after the mark is deleted. The gtk_text_buffer_delete_mark_by_name() function is included in this function and not exported in the Lisp library.