From: Phillip Wood <phillip.wood@xxxxxxxxxxxxx>
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 <phillip.wood@xxxxxxxxxxxxx>
---
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
