counsel.el (counsel-expression-history): Add docstring

diff --git a/counsel.el b/counsel.el
index a2ac55c62513a0138b39b6d1f3c801f9e18086fd..6a657b7f48abd40a7e9eb0b42d1817ec67e29a0f 100644 (file)
--- a/counsel.el
+++ b/counsel.el
@@ -1872,6 +1872,9 @@ An extra action allows to switch to the process buffer."
 ;;** `counsel-expression-history'
 ;;;###autoload
 (defun counsel-expression-history ()
+  "Select an element of `read-expression-history'.
+And insert it into the minibuffer. Useful during
+`eval-expression'"
   (interactive)
   (let ((enable-recursive-minibuffers t))
     (ivy-read "Expr: " (delete-dups read-expression-history)