https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=9dfed83bdc748ccb55988c78ae373270e259369c
commit 9dfed83bdc748ccb55988c78ae373270e259369c Author: Takashi Yano <[email protected]> Date: Wed Dec 10 10:01:24 2025 +0900 Cygwin: pty: Allow ST as a termination in pty_master_fwd_thread In the ESC sequence parser in pty_master_fwd_thread, the termination ST (ESC \) was not supported for title set ESC sequence, that is, only BEL was detected. This patch allows ST as a termination. Fixes: 10d083c745dd ("Cygwin: pty: Inherit typeahead data between two input pipes.") Reviewed-by: Corinna Vinschen <[email protected]>, Johannes Schindelin <[email protected]> Signed-off-by: Takashi Yano <[email protected]> (cherry picked from commit f840dd0a0b11498cdc206c8ad48df1975d511209) Diff: --- winsup/cygwin/fhandler/pty.cc | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/winsup/cygwin/fhandler/pty.cc b/winsup/cygwin/fhandler/pty.cc index d2a9f3b79..a7d2bb42e 100644 --- a/winsup/cygwin/fhandler/pty.cc +++ b/winsup/cygwin/fhandler/pty.cc @@ -2659,7 +2659,7 @@ fhandler_pty_master::pty_master_fwd_thread (const master_fwd_thread_param_t *p) int state = 0; int start_at = 0; for (DWORD i=0; i<rlen; i++) - if (outbuf[i] == '\033') + if (state == 0 && outbuf[i] == '\033') { start_at = i; state = 1; @@ -2667,12 +2667,14 @@ fhandler_pty_master::pty_master_fwd_thread (const master_fwd_thread_param_t *p) } else if ((state == 1 && outbuf[i] == ']') || (state == 2 && outbuf[i] == '0') || - (state == 3 && outbuf[i] == ';')) + (state == 3 && outbuf[i] == ';') || + (state == 4 && outbuf[i] == '\033')) { state ++; continue; } - else if (state == 4 && outbuf[i] == '\a') + else if ((state == 4 && outbuf[i] == '\a') + || (state == 5 && outbuf[i] == '\\')) { const char *helper_str = "\\bin\\cygwin-console-helper.exe"; if (memmem (&outbuf[start_at], i + 1 - start_at, @@ -2685,7 +2687,9 @@ fhandler_pty_master::pty_master_fwd_thread (const master_fwd_thread_param_t *p) state = 0; continue; } - else if (outbuf[i] == '\a') + else if (state == 4) + continue; + else { state = 0; continue;
