+2000-06-15 Ehud Karni <ehud@unix.mvs.co.il>
+
+ * complete.el (PC-env-vars-alist): New variable.
+ (PC-complete-as-file-name): New function.
+ (partial-completion-mode): Initialize PC-env-vars-alist from
+ process-environment.
+ (PC-do-completion): Handle completion of env vars.
+