or download this
;; NB as it stands the code in cperl-mode assumes this only has one
;; element. If XEmacs 19 support were dropped, this could all be simpl
+ified.
...
'(("^[^\n]* \\(file\\|at\\) \\([^ \t\n]+\\) [^\n]*line \\([0-9]+\\)[
+\\., \n]"
2 3))
"Alist that specifies how to match errors in perl output.")