gnu: emacs-ws-butler: Update to 1.3.

* gnu/packages/emacs-xyz.scm (emacs-ws-butler): Update to 1.3.
[source]: Switch to git-fetch.
[arguments]: Add #:test-command.

Change-Id: I5e50106efc32057f91bceff1a0b8fbbd2b1d7ef6
Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

gnu/packages/emacs-xyz.scm

@@ -23634,24 +23634,31 @@ of commands is displayed in a handy popup.")
     (license license:gpl3+)))
 
 (define-public emacs-ws-butler
+  (let ((commit "9ee5a7657a22e836618813c2e2b64a548d27d2ff")
+        (revision "0"))
     (package
       (name "emacs-ws-butler")
-    (version "1.1")
+      (version (git-version "1.3" revision commit))
       (source
        (origin
-       (method url-fetch)
+         (method git-fetch)
-       (uri (string-append "https://elpa.nongnu.org/nongnu/ws-butler-" version
+         (uri (git-reference
-                           ".tar"))
+               (url "https://git.savannah.gnu.org/git/emacs/nongnu")
+               (commit commit)))
+         (file-name (git-file-name name version))
          (sha256
-        (base32 "1vy7g2ryg1drcz9zpn011d36zcd9a5b5yny5hwpjrllqj5dg73jx"))))
+          (base32 "0ivpgib2bxv7x6cp04mj8crc1a60d7c77jcc59sj14scq4jqbmjb"))))
       (build-system emacs-build-system)
+      (arguments (list #:test-command
+                       #~(list "emacs" "--batch" "-L" "."
+                               "-l" "tests/run-test.el")))
       (home-page "https://elpa.nongnu.org/nongnu/ws-butler.html")
       (synopsis "Unobtrusively remove trailing whitespace")
       (description
        "ws-butler automatically trims trailing whitespace characters on save.
 In contrast with other whitespace cleanup solutions, only modified lines are
 trimmed.")
-    (license license:gpl3+)))
+      (license license:gpl3+))))
 
 (define-public emacs-opencl-mode
   (package