patch 8.1.0840: getchar(0) never returns a character in the terminal
Problem: getchar(0) never returns a character in the terminal.
Solution: Call wait_func() at least once.
diff --git a/src/ui.c b/src/ui.c
index d4278a3..0823d2d 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -272,6 +272,7 @@
{
int len;
int interrupted = FALSE;
+ int did_call_wait_func = FALSE;
int did_start_blocking = FALSE;
long wait_time;
long elapsed_time = 0;
@@ -313,7 +314,11 @@
elapsed_time = ELAPSED_FUNC(start_tv);
#endif
wait_time -= elapsed_time;
- if (wait_time <= 0)
+
+ // If the waiting time is now zero or less, we timed out. However,
+ // loop at least once to check for characters and events. Matters
+ // when "wtime" is zero.
+ if (wait_time <= 0 && did_call_wait_func)
{
if (wtime >= 0)
// no character available within "wtime"
@@ -374,6 +379,7 @@
// Wait for a character to be typed or another event, such as the winch
// signal or an event on the monitored file descriptors.
+ did_call_wait_func = TRUE;
if (wait_func(wait_time, &interrupted, FALSE))
{
// If input was put directly in typeahead buffer bail out here.