Allow arguments to d to be passed to dirs

Replace the alias with a function. Call `dirs` if arguments are given to `d`.

lib/directories.zsh

@@ -21,7 +21,14 @@ alias 9='cd -9'
 
 alias md='mkdir -p'
 alias rd=rmdir
-alias d='dirs -v | head -10'
+function d () {
+  if [[ -n $1 ]]; then
+    dirs "$@"
+  else
+    dirs -v | head -10
+  fi
+}
+compdef _dirs d
 
 # List directory contents
 alias lsa='ls -lah'