- "Toggle ISO-ASCII mode."
- :variable (eq standard-display-table iso-ascii-display-table)
- (unless standard-display-table
- (setq standard-display-table iso-ascii-standard-display-table)))
+ "Toggle ISO-ASCII mode.
+With a prefix argument ARG, enable the mode if ARG is positive,
+and disable it otherwise. If called from Lisp, enable the mode
+if ARG is omitted or nil."
+ :variable ((eq standard-display-table iso-ascii-display-table)
+ . (lambda (v)
+ (setq standard-display-table
+ (cond
+ (v iso-ascii-display-table)
+ ((eq standard-display-table iso-ascii-display-table)
+ iso-ascii-standard-display-table)
+ (t standard-display-table))))))