ediff-diff-ok-lines-regexpediff-diff-ok-lines-regexp is a variable defined in `
ediff-diff.el'. Its value is
"^\\([0-9,]+[acd][0-9,]+ ?$\\|[<>] \\|---\\|.*Warning *:\\|.*No +newline\\|.*missing +newline\\|^ ?$\\)"Documentation: Regexp that matches normal output lines from `ediff-diff-program'. This is mostly lifted from Emerge, except that Ediff also considers warnings and `Missing newline'-type messages to be normal output. Lines that do not match are assumed to be error messages.