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+;;; +expand-region.el                                -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+;;
+
+;;; Code:
+
+;; Because of `wrap-region', I can't use `expand-region-fast-keys-enabled'.  So
+;; instead of that, I'm adding this to the binding to C--, but I also want to be
+;; able to use the negative argument. So there's this.
+(defun +er/contract-or-negative-argument (arg)
+  "Contract the region if the last command expanded it.
+Otherwise, pass the ARG as a negative argument."
+  (interactive "p")
+  (cond ((memq last-command '(er/expand-region
+                              er/contract-region
+                              +er/contract-or-negative-argument))
+
+         (er/contract-region arg))
+        (t (call-interactively #'negative-argument))))
+
+(provide '+expand-region)
+;;; +expand-region.el ends here