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Date:	Fri, 9 Aug 2013 09:54:20 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Redirecting cat and paste to file gives garbage
Message-ID:	<20130809075420.GA30689@calimero.vinschen.de>
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User-Agent:	Mutt/1.5.21 (2010-09-15)

On Aug  9 05:53, Andy Koppe wrote:
> On 8 August 2013 17:07, Ryan Johnson wrote:
> > On 08/08/2013 11:48 AM, Corinna Vinschen wrote:
> >>
> >> On Aug  8 17:32, Corinna Vinschen wrote:
> >>>
> >>> On Aug  8 09:48, Ryan Johnson wrote:
> >>>>
> >>>> Hi all,
> >>>>
> >>>> (no, that's not a typo in the subject line)
> >>>>
> >>>> 64-bit install, bash inside mintty, all latest packages with the
> >>>> cygwin1.dll snapshot shown below...
> >>>>
> >>>> # <<< --- begin STC --->>>
> >>>> $ uname -a
> >>>> CYGWIN_NT-6.1 ryan-laptop-v02 1.7.23s(0.268/5/3) 20130729 19:11:42
> >>>> x86_64 Cygwin
> >>>>
> >>>> $ echo "Reading" > /dev/clipboard
> >>>>
> >>>> # hit [shift]+[insert] to paste
> >>>> # (hopefully 8 characters is not "too long" to paste into a TTY)
> >>>> # then hit ^D to finish
> >>>> $ cat > tmp.txt
> >>>>
> >>>> $ cat tmp.txt
> >>>> Rg
> >>>> eRaedaidnign
> >>>> g
> >>>
> >>> The only idea I have is this.  The clipboard data is stored as
> >>> CF_UNICODETEXT and as the Cygwin-private CYGWIN_NATIVE_CLIPBOARD format.
> >>> How's shift-insert implemented in mintty?  If it reads the CF_UNICODETEXT
> >>> part and sends it to the pty unchanged, that could explain
> >>> this behaviour.
> >>
> >> The pty already gets 16 chars.  And pasting the text into CMD or, FWIW,
> >> any Windows console window works as expected.  So this looks like a
> >> mintty bug right now.
> >
> > That's what I thought at first, too, but it pastes fine directly into the
> > terminal... and then I had a brain cramp and didn't add that to the STC:
> >
> > $ echo reading > /dev/clipboard
> > # press [shift]+[insert] here...
> > $ echo
> > reading
> >
> > Still a mintty bug?
> 
> Don't think so. Mintty has no idea what it's pasting to; it just
> writes the clipboard content to the pty (which it obtains from
> CF_UNICODETEXT and converts to the current charset).
> 
> I couldn't reproduce the problem with 1.7.22, but I could with the
> 20130729 snapshot. With 1.7.22, when you paste during the 'cat
> >tmp.txt', the text is correctly echoed back to the terminal and put
> into the file. With the snapshot, it looks like the actual input and
> the echo both end up in the file.

The snapshot date should have been a fairly good hint, but I missed it
nevertheless.  The problem is an accidental checkin which was reverted
on 2013-07-31.  Consequentially, if you would update to the 2013-07-31
snapshot, the problem should go away...  with the tiny downside that we
neglected to upload a 64 bit snapshot on 2013-07-31.  Duh.

I'm going to release 1.7.23 today anyway, so I'll not upload a new
snapshot for now.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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