bug#16649: Right margin overflows on neighboring windows.

[E Sabof]

Sorry, the right fringe renders correctly, but the margin still overflows. 
Attached is a screenshot of magit-log, where this can be seen. Below is a test 
case.

Evgeni

(let ((ov (make-overlay (point-min) (point-max))))
  (overlay-put ov
               'before-string
               (propertize "o" 'display
                           (list '(margin right-margin)
                                 (propertize
                                  "Laetamur quis quam, aliqua nostrum."
                                  'face '(:background "yellow")
                                  ))))
  (set-window-margins nil (car (window-margins)) 30))

2014-02-07-022045_707x630_scrot.png
Description: PNG image

E Sabof <esabof@gmail.com> writes:

> Works indeed, thanks!
>
> Evgeni
>
> martin rudalics <rudalics@gmx.at> writes:
>
>>  >>From emacs -Q, with version from trunk.
>>  >
>>  > STEPS:
>>  >
>>  > (set-window-margins nil (car (window-margins)) 30))
>>  > C-x 3
>>  >
>>  > Resize, until the right window is smaller than the margin.
>>  >
>>  > RESULT:
>>  >
>>  > The right window's right fringe will be drawn on top of the left window's 
>> right margin.
>>
>> Should be fixed now.  Though using such large margins surely means
>> asking for trouble.
>>
>> Thanks, martin