elisp - Emacs -- how to consolidate :lighter(s) for minor modes -

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is possible consolidate :lighters on mode-line when combination of active minor modes exists? if so, how please?

example:

  • minor mode number 1 has :lighter of " -"

  • minor mode number 2 has :lighter of " +"

if both minor modes active in buffer, consolidate lighters: " ±"

you can dynamically alter lighter value minor mode modifying minor-mode-alist:

(setcar (cdr (assq 'mode minor-mode-alist)) value)

when either of modes activated or deactivated, check status of other, , set lighter text accordingly. when both active can make 1 empty string, , other 'combined' lighter.

or, better, take advantage of fact mode-line construct valid, , make automatic. using delight.el wrapper above, , assuming both modes defined mylibrary.el might say:

(delight '((mode+ (mode- " ±" " +") "mylibrary")            (mode- (mode+ "" " -") "mylibrary")))

that's not perfect -- if want associated pop-up menus combine details of both modes, there's rather more do; recommend don't worry if don't need to. appearance of mode line low-hanging fruit here.


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