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lib/std/fs/File: enable VT seq support for Windows Console

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* Newer versions of Windows added VT seq support not only in Windows Terminal, but also in the old-fashioned Windows Console (standalone conhost.exe), though not enabled by default.
* Try setting the newer console mode flags provides better experience for Windows Console users.

Co-authored-by: Kexy Biscuit <kexybiscuit@biscuitt.in>
This commit is contained in:
Garfield Lee 2024-01-26 00:16:26 +08:00 committed by Ryan Liptak
parent d74180c373
commit 17dc939346
1 changed files with 18 additions and 3 deletions
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21
lib/std/fs/File.zig
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@ -248,9 +248,24 @@ pub fn isCygwinPty(file: File) bool {
/// Test whether ANSI escape codes will be treated as such.
pub fn supportsAnsiEscapeCodes(self: File) bool {
if (builtin.os.tag == .windows) {
var console_mode: windows.DWORD = 0;
if (windows.kernel32.GetConsoleMode(self.handle, &console_mode) != 0) {
if (console_mode & windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING != 0) return true;
var original_console_mode: windows.DWORD = 0;
// For Windows Terminal, VT Sequences processing is enabled by default.
if (windows.kernel32.GetConsoleMode(self.handle, &original_console_mode) != 0) {
if (original_console_mode & windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING != 0) return true;
// For Windows Console, VT Sequences processing support was added in Windows 10 build 14361, but disabled by default.
// https://devblogs.microsoft.com/commandline/tmux-support-arrives-for-bash-on-ubuntu-on-windows/
// Use Microsoft's recommended way to enable virtual terminal processing.
// https://learn.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences#example-of-enabling-virtual-terminal-processing
var requested_console_modes: windows.DWORD = windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING | windows.DISABLE_NEWLINE_AUTO_RETURN;
var console_mode = original_console_mode | requested_console_modes;
if (windows.kernel32.SetConsoleMode(self.handle, console_mode) != 0) return true;
// An application receiving ERROR_INVALID_PARAMETER with one of the newer console mode flags in the bit field should gracefully degrade behavior and try again.
requested_console_modes = windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING;
console_mode = original_console_mode | requested_console_modes;
if (windows.kernel32.SetConsoleMode(self.handle, console_mode) != 0) return true;
}
return self.isCygwinPty();