On Sunday, August 25, 2013 3:19:32 PM UTC-4, ZyX wrote:
> On Aug 25, 2013 10:57 PM, "Tony Mechelynck" <antoine.m...@gmail.com> wrote:
>
> >
>
> > On 25/08/13 20:45, Nikolay Pavlov wrote:
>
> >>
>
> >>
>
> >> On Aug 25, 2013 10:36 PM, "Liang Li" <q33...@gmail.com
>
> >> <mailto:q33...@gmail.com>> wrote:
>
> >> >
>
> >> > Hey guys, this is sort of an obscure problem, I'm not sure if you
>
> >> have any suggestions. I'm running vim 7.3.3 (locally) on an android
>
> >> phone, via Connectbot, and I'm getting a crash that can't be reproduced
>
> >> on a computer due to redr!, maybe because of memory constraints or
>
> >> something. For example, the following script will crash my phone after
>
> >> about 3 seconds
>
> >>
>
> >> Why not use some more recent version? There were plenty of bug fixes.
>
> >>
>
> >> > while 1
>
> >> > if reltime()[1]%2
>
> >> > exe "norm! \<c-e>"
>
> >> > else
>
> >> > exe "norm! \<c-y>"
>
> >> > en
>
> >> > redr!
>
> >> > endwhile
>
> >> >
>
> >> > On the "verbose" error log I get an "Interrupted" message and it
>
> >> jumps straight into my VimLeavePre autocommmands. I'm mostly looking for
>
> >> a work-around or any suggestions as to how to avoid this, or whether
>
> >> it's possible to do a safer redraw, etc. Try / catch, for example,
>
> >> doesn't work.
>
> >>
>
> >> Try setting 'nolazyredraw'. This should cause normally omitted redraws
>
> >> while script is running. I have no other idea how to cause a redraw
>
> >> except for :execute "normal!\<C-l>", which should not make any difference.
>
> >
>
> >
>
> > There is also :redraw (or :redraw! to clear the screen before redrawing). See :help :redraw
>
> :redraw! causes a crash, :redraw seemed to do nothing for me any time I tried. The question was a safer way to redraw, :redraw! was already mentioned in the first message and I assumed that :redraw was also tested and proved to be just as useless for OP like it was for me.
>
>
> The "and I'm getting a crash that can't be reproduced on a computer due to redr!" is the place where :redraw was mentioned.
>
> >>
>
> >> > The actual script I'm working on, if this is relevant, is a mouse
>
> >> panning thing, a la Adobe reader:
>
> >> >
>
> >> > nn <silent> <leftmouse> :call getchar()<cr><leftmouse>:exe
>
> >> (MousePan()==1? "keepj norm! \<lt>leftmouse>":"")<cr>
>
> >> > let
>
> >> glidestep=[99999999]+map(range(11),'11*(11-v:val)*(11-v:val)')
>
> >> > fun! MousePan()
>
> >> > if v:mouse_lnum>line('w$') || (&wrap &&
>
> >> v:mouse_col%winwidth(0)==1) || (!&wrap &&
>
> >> v:mouse_col>=winwidth(0)+winsaveview().leftcol) || v:mouse_lnum==line('$')
>
> >> > if line('$')==line('w0') | exe "keepj norm!
>
> >> \<c-y>" |en
>
> >> > return 1 | en
>
> >> > exe "norm! \<leftmouse>"
>
> >> > let
>
> >> [veon,fr,tl,dvl,dhl]=[&ve==?'all',-1,repeat([reltime()],4),[0,0,0,0],[0,0,0,0]]
>
> >> > let v=winsaveview()
>
> >> > let [v.col,v.coladd]=[0,v.curswant]
>
> >> > while getchar()=="\<leftdrag>"
>
> >> > let
>
> >> [dV,dH,fr]=[min([v:mouse_lnum-v.lnum,v.topline-1]),
>
> >> min([veon*(v:mouse_col-v.coladd-1),v.leftcol]),(fr+1)%4]
>
> >> > let
>
> >> [v.topline,v.leftcol,v.lnum,v.coladd,tl[fr],dvl[fr],dhl[fr]]=[v.topline-dV,v.leftcol-dH,v:mouse_lnum-dV,v:mouse_col-1-dH,reltime(),dV,dH]
>
> >> > call winrestview(v)
>
> >> > redr!
>
> >> > endwhile
>
> >> > let
>
> >> [sv,sh]=[dvl[0]+dvl[1]+dvl[2]+dvl[3],dhl[0]+dhl[1]+dhl[2]+dhl[3]]
>
> >> > let [ctl,cln,sv]=sv>2?
>
> >> ['-(v.topline>1)','-(v.lnum>1)',sv+10] : sv<-2?
>
> >> ['v.topline<'.line('$'),'v.lnum<'.line('$'),-sv+10] :
>
> >> ['-(v.topline>1)','-(v.lnum>1)',0]
>
> >> > let [clc,cca,sh,vc,hc]=sh>2?
>
> >> ['-(v.leftcol>0)','-(v.coladd>0)',sh+10,0,0] : sh<-2?
>
> >> ['1','1',-sh+10,0,0] : ['1','1',0,0,0]
>
> >> > if !eval(join(reltime(tl[(fr+1)%4]),' || 20000<')) ||
>
> >> !sv && !sh | return | en
>
> >> > while !getchar(1) && sv+sh>0
>
> >> > let
>
> >> [y,x,vc,hc]=[vc>get(g:glidestep,sv,1),hc>get(g:glidestep,sh,1),vc+1,hc+1]
>
> >> > if y+x
>
> >> > let [v.topline,v.lnum,sv,vc]+=y?
>
> >> [eval(ctl),eval(cln),-1,-vc] : [0,0,0,0]
>
> >> > let [v.leftcol,v.coladd,sh,hc]+=x?
>
> >> [eval(clc),eval(cca),-1,-hc] : [0,0,0,0]
>
> >> > call winrestview(v)
>
> >> > redr!
>
> >> > en
>
> >> > endw
>
> >> > endfun
>
> >> >
>
> >
>
> >
>
> >
>
> > Best regards,
>
> > Tony.
>
> > --
>
> > FORTH IF HONK THEN
>
> >
>
> >
>
> >
>
> > --
>
> > --
>
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Oddly enough, redr without the "!" doesn't cause the crash... I figured they were the same but for some reason it runs fine. I guess seems the screen clear is the culprit, ie:
while 1
if reltime()[1]%2
exe "norm! \<c-e>"
else
exe "norm! \<c-y>"
en
redr
endwhile
... works fine, and even ...
while 1
redr!
endwhile
works fine, so I guess vim is good at detecting redundant commands? But replacing "redr with "redr!" or exe "norm! \<c-l>" | redr both crash. Unfotunately I can't use redr for this case because it doesn't properly update the screen on horizontal panning.
Thanks for all the suggestions. I'm dying for vim 7.4 on android (and cygwin, too, for that matter) on android but I have very little experience with this sort of thing -- it doesn't sound all that straightfoward. I've been using Kevin Boone's version (http://kevinboone.net/kbox2_downloads.html), but updating it isn't really on the top of his list, so he tells me.
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