diff options
Diffstat (limited to 'lisp/emacs-lisp')
| -rw-r--r-- | lisp/emacs-lisp/comp-cstr.el | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lisp/emacs-lisp/comp-cstr.el b/lisp/emacs-lisp/comp-cstr.el index 3f3f4f61451..cd8f432412c 100644 --- a/lisp/emacs-lisp/comp-cstr.el +++ b/lisp/emacs-lisp/comp-cstr.el @@ -598,6 +598,15 @@ DST is returned." (valset dst) (valset neg) (range dst) (range neg) (neg dst) t) + + ;; (not t) => nil + (when (and (null (valset dst)) + (null (range dst)) + (neg dst) + (equal '(t) (typeset dst))) + (setf (typeset dst) () + (neg dst) nil)) + (cl-return-from comp-cstr-intersection-no-mem dst)) (when (cl-some |