bug#39662: 28.0.50; Emacs crashes in x_cr_define_fringe_bitmap if (fringe-mode 0)

[Robert Pluim]

>>>>> On Tue, 18 Feb 2020 22:29:02 +0200, Dmitry Gutov <dgutov@yandex.ru> said:

    Dmitry> On 18.02.2020 22:12, Eli Zaretskii wrote:
    >>> But itʼs friendlier to existing code to change 0 to 1, no?
    >> Yes.

    Dmitry> Speaking of diff-hl, signaling an error would probably be more
    Dmitry> constructive since if the call succeeds, the user might turn on 
    Dmitry> fringe-mode and find that all bitmaps defined by diff-hl are 1-pixel
    Dmitry> wide for no apparent reason.

I was thinking of using '8', since thatʼs the default fringe-width.

Robert