functions: allow arguments in vimscratch

functions/vim.zsh

@@ -1,12 +1,12 @@
 # open vim with a scratch window that can be discarded on exit.
 vimscratch() {
+    set -x
     local args
     # if running in a pipe, use stdin (-) as arg.
     # -t checks if the given FD is a terminal
-    if [ -t 0 ] ; then
-        args="$@"
-    else
-        args="-"
+    if [ ! -t 0 ] ; then
+        stdin_arg="-"
     fi
-    vim -c "set buftype=nofile" "$args"
+    vim -c "set buftype=nofile" $@ $stdin_arg
+    set +x
 }