On Feb 13 00:51, Andrey Repin wrote:
> Greetings, Corinna Vinschen!
>
> > On Feb 12 13:45, Adam Dinwoodie wrote:
> >> I've spotted some slightly odd behaviour when writing things from
> >> multiple processes to /dev/clipboard.
> >>
> >> Easiest to show this with an example:
> >>
> >> for n in {1..10}; do echo $n; done >/dev/clipboard; cat /dev/clipboard
> >>
> >> I expect this to print out the numbers 1–10 to the terminal. Sometimes
> >> it does, but sometimes it misses out some of the numbers at the end;
> >> printing the digits 1–8, say, but no more. Generally it gets to around
> >> 7–9, but I've seen it managing to only get up to 3 on one occasion.
>
> > I can't reproduce this. First I tried this manually a couple of times,
> > but then I created a loop:
>
> > for i in {1..1000}
> > do
> > echo > /dev/clipboard
> > for n in {1..10}; do echo $n; done > /dev/clipboard
> > grep -q 10 /dev/clipboard || cat /dev/clipboard
> > done
>
> > and it didn't fail once. I'm not sure what to do if I don't have a
> > reproducible testcase...
>
> Failed ~20 times for me. And the more, the more I run the test.
> What is more curious, is if I modify your test to only print "1",
>
> while true; do
> echo > /dev/clipboard
> for n in {1..10}; do echo $n; done > /dev/clipboard
> grep -q 10 /dev/clipboard || grep 1 /dev/clipboard
> done
>
> it sporadically print 10 !
> And my mail client actively flashing "paste" buttons, when the script is
> working in background. May be that's it.
>
> This is more visible:
> $ while true; do { i=$(( $i+1 )); echo > /dev/clipboard; for n in {1..10}; do
> echo $n; done > /dev/clipboard; grep -q 10 /dev/clipboard || { grep 10
> /dev/clipboard && echo $i;};}; done;Nope, no way. I'm running this latter test for 45 minutes now, with no output. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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