Make symbol-at-point return nil if there's no symbols in the buffer
* lisp/thingatpt.el (thing-at-point--beginning-of-symbol): Special op that errors out when there's no symbols in the buffer before point (bug#14234). (symbol): Use it.
* lisp/thingatpt.el (thing-at-point--beginning-of-symbol): Special op that errors out when there's no symbols in the buffer before point (bug#14234). (symbol): Use it.