On 2021-09-26 13:09, Lee via Cygwin wrote:
On 9/26/21, Thomas Wolff wrote:
Am 26.09.2021 um 20:37 schrieb Thomas Wolff:
Am 26.09.2021 um 11:50 schrieb Mark Geisert:
Takashi Yano via Cygwin wrote:
I noticed that cygwin clipboard is not compatible
between 32bit and 64bit cygwin.
If I run 'echo AAAAAAAA > /dev/clipboard' in 32bit cygwin,
and run 'cat /dev/clipboard' in 64bit cygwin, this result in
cat: /dev/clipboard: Bad address
This is because the structure
typedef struct
{
    timestruc_t   timestamp;
    size_t    len;
    char      data[1];
} cygcb_t;
defined in fhandler_clipboard.cc has different size.
Is this the known issue?

I doubt anybody has ever tried what you did.

I have and it failed; I just didn't find it important enough to report
it here... Thanks for the plan to fix it.

I have been testing getclip and putclip between 32- and 64-bit
environments, but neglected to test Cygwin-internal clipboard format
that prepends cygcb_t to the user-supplied data.

As we're at it, what's the purpose of a cygwin-internal clipboard format
at all?

speed?
Maybe I'm not understanding the question, but I put a question to this
list ~3 years ago about right-click/paste into a mintty window being
**really** slow and the answer was to use getclip:
$ time d2u < /dev/clipboard > hosts-3.txt
real    0m11.372s
user    0m3.749s
sys     0m6.984s
$ time cat /dev/clipboard | tr -d '\r' > hosts-2.txt
real    0m4.405s
user    0m0.124s
sys     0m3.577s
$ time getclip -u > hosts.txt
real    0m0.734s
user    0m0.031s
sys     0m0.031s

I'm not so worried about speed, except where that stops clipboard contents being updated quickly for consistency, but I ended up explicitly using /dev/clipboard under Cygwin for consistent interoperation with gvim and lxterminal under Linux VMs and gvim and mintty in Cygwin.

It would be good to test any changes across systems, or I could do so if the developer(s? - Mark?) don't run the environments to do so.

--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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