Re: [PATCH] Cygwin: pty: Do not set input_available_event when applying line_edit()

Hi Takashi,

On 6/8/2026 6:34 AM, Takashi Yano wrote:
> The commit a0b38a81b9be sets input_available_event even if the
> transferred input is still in the readahead buffer and is not ready
> to read. The SetEvent() is called in accept_input() via line_edit(),
> so setting this event here is not correct. This causes the issue
> that read() returns 0 instead of blocking until accept_input() is
> called. This patch removes this SetEvent() call.
> 
> Fixes: a0b38a81b9be ("Cygwin: pty: Apply line_edit() for transferred input to to_cyg")
> Addresses: https://cygwin.com/pipermail/cygwin/2026-June/259776.html
> Reported-by: Koichi Murase <[email protected]>
> Signed-off-by: Takashi Yano <[email protected]>
> Reviewed-by:
> ---
>   winsup/cygwin/fhandler/pty.cc | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/winsup/cygwin/fhandler/pty.cc b/winsup/cygwin/fhandler/pty.cc
> index 80331c36d..2558fa799 100644
> --- a/winsup/cygwin/fhandler/pty.cc
> +++ b/winsup/cygwin/fhandler/pty.cc
> @@ -2946,7 +2946,6 @@ fhandler_pty_master::apply_line_edit_to_transferred_input ()
>         n -= ret;
>         p += ret;
>       }
> -  SetEvent (input_available_event);
>   }
>   
>   static DWORD

LGTM.  OK to push.

..mark