Use lexical-binding in webjump.el and add tests

* lisp/net/webjump.el: Use lexical-binding.
(webjump-read-url-choice): Remove redundant 'function' around lambda.

* test/lisp/net/webjump-tests.el: New file with tests for webjump.el.

1 files changed, 2 insertions, 3 deletions

diff --git a/lisp/net/webjump.el b/lisp/net/webjump.el
index 6edd03c39cc..8bb156199c5 100644
--- a/lisp/net/webjump.el
+++ b/lisp/net/webjump.el
@@ -1,4 +1,4 @@
-;;; webjump.el --- programmable Web hotlist
+;;; webjump.el --- programmable Web hotlist  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 1996-1997, 2001-2020 Free Software Foundation, Inc.
 
@@ -323,8 +323,7 @@ Please submit bug reports and other feedback to the author, Neil W. Van Dyke
 
 (defun webjump-read-url-choice (what urls &optional default)
   ;; Note: Convert this to use `webjump-read-choice' someday.
-  (let* ((completions (mapcar (function (lambda (n) (cons n n)))
-                              urls))
+  (let* ((completions (mapcar (lambda (n) (cons n n)) urls))
          (input (completing-read (concat what
                                          ;;(if default " (RET for default)" "")
                                          ": ")