OpenConsole.exe has a bug(?) that the Ctrl-H is translated into Ctrl-Backspace (not Backspace). This is a workaround for that issue which pushes the Ctrl-H as a ConsoleInput event.
Signed-off-by: Takashi Yano <[email protected]> Reviewed-by: --- winsup/cygwin/fhandler/pty.cc | 47 ++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-) diff --git a/winsup/cygwin/fhandler/pty.cc b/winsup/cygwin/fhandler/pty.cc index 7366eea09..9a175e722 100644 --- a/winsup/cygwin/fhandler/pty.cc +++ b/winsup/cygwin/fhandler/pty.cc @@ -2459,8 +2459,53 @@ fhandler_pty_master::write (const void *ptr, size_t len) } } + /* OpenConsole.exe has a bug(?) that Ctrl-H is translated into + Ctrl-Backspace (not Backspace). The following code is a + workaround for that issue. */ + char *bs_pos = (char *) memchr (buf, '\010' /* ^H */, nlen); + HANDLE pcon_owner = NULL; + HANDLE h_pcon_in = NULL; + DWORD resume_pid = 0; + if (bs_pos) + { + pcon_owner = OpenProcess (PROCESS_DUP_HANDLE, FALSE, + get_ttyp ()->nat_pipe_owner_pid); + DuplicateHandle (pcon_owner, get_ttyp ()->h_pcon_in, + GetCurrentProcess (), &h_pcon_in, + 0, FALSE, DUPLICATE_SAME_ACCESS); + resume_pid = + attach_console_temporarily (get_ttyp()->nat_pipe_owner_pid); + } + DWORD n; - WriteFile (to_slave_nat, buf, nlen, &n, NULL); + while (bs_pos) + { + if (bs_pos - buf > 0) + WriteFile (to_slave_nat, buf, bs_pos - buf, &n, NULL); + INPUT_RECORD r; + r.EventType = KEY_EVENT; + r.Event.KeyEvent.bKeyDown = 1; + r.Event.KeyEvent.wRepeatCount = 0; + r.Event.KeyEvent.wVirtualKeyCode = 0; + r.Event.KeyEvent.wVirtualScanCode = 0; + r.Event.KeyEvent.uChar.AsciiChar = '\010'; /* ^H */ + r.Event.KeyEvent.dwControlKeyState = LEFT_CTRL_PRESSED; + WriteConsoleInput(h_pcon_in, &r, 1, &n); + r.Event.KeyEvent.bKeyDown = 0; + WriteConsoleInput(h_pcon_in, &r, 1, &n); + nlen -= bs_pos - buf + 1; + buf = bs_pos + 1; + bs_pos = (char *) memchr (buf, '\010' /* ^H */, nlen); + } + if (nlen > 0) + WriteFile (to_slave_nat, buf, nlen, &n, NULL); + + if (resume_pid) + resume_from_temporarily_attach (resume_pid); + if (h_pcon_in) + CloseHandle(h_pcon_in); + if (pcon_owner) + CloseHandle(pcon_owner); ReleaseMutex (input_mutex); return len; -- 2.51.0
