Re: Overlays' `before-string' not displayed in left margin?

[David De La Harpe Golden]

Lennart Borgman wrote:
> I put this on an overlay's before-string property
>
>   ((margin left-margin)
>    "1 php-mode")
>
> but I see nothing in the left margin (with left-margin-width set to 20).
>
> Is this a bug or do I misunderstand something? Doesn't it work for overlays?

try e.g.

(overlay-put ov 'before-string
             (propertize " " 'display
                         '((margin left-margin) "1 php-mode")))


i.e. a margin display property on string that is the before-string 
you're putting on the overlay...