Name of the errorfile for the QuickFix mode (see :cf). When the "-q" command-line argument is used, 'errorfile' is set to the following argument. See -q. NOT used for the ":make" command. See 'makeef' for that. Environment variables are expanded :set_env. See option-backslash about including spaces and backslashes. This option cannot be set from a modeline or in the sandbox, for security reasons.

(Amiga default: "AztecC.Err", others: "errors.err")

not available when compiled without the +quickfix feature