From: Phillip Wood via GitGitGadget Date: Tue, 22 Feb 2022 18:53:34 GMT Subject: [PATCH v2 3/4] terminal: set VMIN and VTIME in non-canonical mode Message-ID: <7ae9b2365542b68d7d75f39b126d2acec3e223ff.1645556015.git.gitgitgadget@gmail.com> In-Reply-To: From: Phillip Wood If VMIN and VTIME are both set to zero then the terminal performs non-blocking reads which means that read_key_without_echo() returns EOF if there is no key press pending. This results in the user being unable to select anything when running "git add -p". Fix this by explicitly setting VMIN and VTIME when enabling non-canonical mode. Signed-off-by: Phillip Wood --- compat/terminal.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/compat/terminal.c b/compat/terminal.c index 11288cfe5c9..3620184e790 100644 --- a/compat/terminal.c +++ b/compat/terminal.c @@ -57,6 +57,10 @@ static int disable_bits(tcflag_t bits) t = old_term; t.c_lflag &= ~bits; + if (bits & ICANON) { + t.c_cc[VMIN] = 1; + t.c_cc[VTIME] = 0; + } if (!tcsetattr(term_fd, TCSAFLUSH, &t)) return 0; @@ -159,7 +163,11 @@ static int disable_bits(DWORD bits) if (bits & ENABLE_LINE_INPUT) { string_list_append(&stty_restore, "icanon"); - strvec_push(&cp.args, "-icanon"); + /* + * POSIX allows VMIN and VTIME to overlap with VEOF and + * VEOL - let's hope that is not the case on windows. + */ + strvec_pushl(&cp.args, "-icanon", "min", "1", "time", "0", NULL); } if (bits & ENABLE_ECHO_INPUT) { -- gitgitgadget