patch 9.2.0184: MS-Windows: screen flicker with termguicolors and visualbell
Commit: https://github.com/vim/vim/commit/74c53196cc108cf744a3f9a6a568bf8c3d75294a Author: Yasuhiro Matsumoto <[email protected]> Date: Mon Mar 16 22:06:47 2026 +0000 patch 9.2.0184: MS-Windows: screen flicker with termguicolors and visualbell Problem: When 'termguicolors' is used on MS-Windows (VTP mode), sending CSI query sequences (like DECRQM) causes the console to generate responses that are misinterpreted as keystrokes. The leading ESC triggers a beep or 'visualbell' flash. Solution: In mch_write(), discard CSI sequences when USE_VTP is active so the console does not process queries and generate unwanted input responses (Yasuhiro Matsumoto). related: #11532 closes: #19694 Signed-off-by: Yasuhiro Matsumoto <[email protected]> Signed-off-by: Christian Brabandt <[email protected]> diff --git a/src/os_win32.c b/src/os_win32.c index 99acf6afe..62fe2ffb7 100644 --- a/src/os_win32.c +++ b/src/os_win32.c @@ -7440,17 +7440,22 @@ notsgr: } else if (s[0] == ESC && len >= 3-1 && s[1] == '[') { - int l = 2; - - if (SAFE_isdigit(s[l])) - l++; - if (s[l] == ' ' && s[l + 1] == 'q') + // When USE_VTP is active, CSI sequences written through + // write_chars() are interpreted by the console's VTP parser, + // generating responses (e.g. DECRQM) that end up in the + // input buffer as unwanted keystrokes. Discard them. + if (USE_VTP) { - // DECSCUSR (cursor style) sequences - if (vtp_working) - vtp_printf("%.*s", l + 2, s); // Pass through - s += l + 2; - len -= l + 1; + int l = 2; + + // skip parameter and intermediate bytes (0x20-0x3F) + while (s + l < end && s[l] >= 0x20 && s[l] <= 0x3F) + l++; + // skip the final byte (0x40-0x7E) + if (s + l < end && s[l] >= 0x40 && s[l] <= 0x7E) + l++; + len -= l - 1; + s += l; } } else diff --git a/src/version.c b/src/version.c index 60b86018f..0bfaa8e7a 100644 --- a/src/version.c +++ b/src/version.c @@ -734,6 +734,8 @@ static char *(features[]) = static int included_patches[] = { /* Add new patch number below this line */ +/**/ + 184, /**/ 183, /**/ -- -- You received this message from the "vim_dev" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/vim_dev/E1w2GDI-008xVO-RN%40256bit.org.
