Emacs: Refine xref etags matches

Fetch and present arity in the *xref* window (unless too many hits).

If we are reasonably sure which definition the user wants to go to
then jump there directly instead of popping to the *xref* window.

1 files changed, 9 insertions, 2 deletions

diff --git a/lib/tools/emacs/erlang-test.el b/lib/tools/emacs/erlang-test.el
index 2ee584d11a..fbdd298da3 100644
--- a/lib/tools/emacs/erlang-test.el
+++ b/lib/tools/emacs/erlang-test.el
@@ -50,8 +50,15 @@
 ;; The -L option adds a directory to the load-path.  It should be the
 ;; directory containing erlang.el and erlang-test.el.
 ;;
-;; 3. Call the script test-erlang-mode in this directory.  This script
-;; use the second method.
+;; 3. Run the emacs_SUITE.  The testcases tests_interpreted/1 and
+;; tests_compiled/1 in this suite are using the second method.  One
+;; way to run this suite is with the ct_run tool, for example like the
+;; following when standing at the OTP repo top directory:
+;;
+;; ct_run -suite lib/tools/test/emacs_SUITE
+;;
+;; Note that this creates a lot of html log files in the current
+;; directory.
 
 ;;; Code: