bug#32002: 24.4; Scroll bar start, end not correct

[Eli Zaretskii]

> From: Mike Kupfer <mkupfer@alum.berkeley.edu>
> cc: npostavs@gmail.com, 32002@debbugs.gnu.org, kurn@sfu.ca
> Date: Thu, 05 Jul 2018 20:58:38 -0700
> 
> gdb says that Emacs is getting jump events, not step events.
> 
>   Thread 1 "emacs" hit Breakpoint 1, xg_scroll_callback (range=0x2f58740, 
>       scroll=GTK_SCROLL_JUMP, value=5637316.2000000002, 
>       user_data=0x1493c30 <bss_sbrk_buffer+8990864>) at xterm.c:5644

Thanks.  I guess the issue now moves to GTK-land: why do we get jump
events when you click on the steppers?  Maybe someone who knows GTK
can answer that.