whitespace-mode

Hi, attached is a new version of whitespace-mode.el which additionally contains an option to highlight only trailing whitespace. Unlike in gnu emacs I did not find something buildin in xemacs to highlight trailing whitespace in a buffer. But I found the whitespace-mode and desided that this mode is the right place to add this functionality anyway. See attachement for my patch (actually it's the complete ziped whitespace-mode.el cause the diff would have been already half in size). The patch contains: 1) Support to highlight trailing whitespace only. This is done by adding "trailing" to the variable whitespace-chars and introducing a new regular expression to look for in variable "whitespace-trailing-search-string". Most of the hightlight and custom functions needed adjustments as well. 2) Bugfix: The changing of a buffer (inserting whitespace) did not have any effect in whitespace-incremental-mode. Now it has, see function: (whitespace-highlight-buffer) 3) I changed the use of "make-local-variable" into "make-local-hook" according to the documentation. (But I'm not sure about this one) 4) I changed the parent menu for whitespace settings from "Apps" to "Options". (But I'm not sure about this one eather. There might be conventions I'm not aware of ). I hope you agree with this suggestion. Could someone review this patch? Any comments are wellcome. (I'm not subscribed to xemacs-beta) Greetings Heiko