1 files changed, 6 insertions, 0 deletions
diff --git a/sx.el b/sx.el
index ccad1b0..501f1e0 100644
--- a/sx.el
+++ b/sx.el
@@ -340,6 +340,12 @@ GET-FUNC and performs the actual comparison."
   "Return STRING with consecutive whitespace squashed together."
   (replace-regexp-in-string "[ 	\r\n]+" " " string))
 
+(defun sx--invert-predicate (predicate)
+  "Return PREDICATE function with arguments inverted.
+For instance (sx--invert-predicate #'<) is the same as #'>.
+Note this is not the same as negating PREDICATE."
+  (lambda (&rest args) (apply predicate (reverse args))))
+
 
 ;;; Printing request data
 (defvar sx--overlays nil