nextd/prevd: Print BEL instead of "Hit end of history"

That message is just hugely annoying.

Hat-tip to @floam and d524bad5f16b5a18c22fefe440.

CHANGELOG.md

@@ -39,6 +39,7 @@
   - `bosh`
   - `vagrant`
 - The git prompt in informative mode now shows the number of stashes if enabled.
+- The nextd and prevd functions no longer print "Hit end of history", instead using a BEL.
 
 ### For distributors and developers
 - The autotools-based build system and legacy Xcode build systems have been removed, leaving only the CMake build system. All distributors and developers must migrate to the CMake build.

share/functions/__fish_move_last.fish

@@ -6,7 +6,8 @@ function __fish_move_last -d "Move the last element of a directory history from
 
     if test $size_src = 0
         # Cannot make this step
-        printf (_ "Hit end of history…\n")
+        # Print a bel, which is the character to print for notifications like these.
+        printf \a
         return 1
     end