inferior-octave-error-regexp-alist

inferior-octave-error-regexp-alist is a variable defined in `octave.el'.
Its value is

(("error:\\s-*\\(.*?\\) at line \\([0-9]+\\), column \\([0-9]+\\)" 1 2 3 2 1)
 ("warning:\\s-*\\([^:\n]+\\):.*at line \\([0-9]+\\), column \\([0-9]+\\)" 1 2 3 1 1))

Documentation:
Value for `compilation-error-regexp-alist' in inferior octave.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.4 of Emacs.