X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/0bba304045eec1b9e552c24fdf705646f24ec5a7..25775a12c5168b0494dff15639ac25d8e1017530:/CONTRIBUTE

diff --git a/CONTRIBUTE b/CONTRIBUTE
index 0ca5d0d56d..2aae251ce4 100644
--- a/CONTRIBUTE
+++ b/CONTRIBUTE
@@ -248,7 +248,9 @@ for documentation errors before submitting a patch.
 ** Test your changes.
 
 Please test your changes before committing them or sending them to the
-list.
+list.  If possible, add a new test along with any bug fix or new
+functionality you commit (of course, some changes cannot be easily
+tested).
 
 Emacs uses ERT, Emacs Lisp Regression Testing, for testing.  See (info
 "(ert)") or https://www.gnu.org/software/emacs/manual/html_node/ert/