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deal with broken ttys on MS Windows

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The tty device timestamps on MS Windows aren't usable because they're always
the current time. So fish can't use them to decide if the entire prompt needs
to be repainted.

Fixes #2859
This commit is contained in:
Kurtis Rader
2016-06-17 13:08:25 -07:00
parent f04644f749
commit 8e21d5de92
4 changed files with 52 additions and 2 deletions
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10
src/screen.cpp
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@@ -347,12 +347,18 @@ static void s_save_status(screen_t *s) {
static void s_check_status(screen_t *s) {
fflush(stdout);
fflush(stderr);
if (!has_working_tty_timestamps) {
// We can't reliably determine if the terminal has been written to behind our back so we
// just assume that hasn't happened and hope for the best. This is important for multi-line
// prompts to work correctly.
return;
}
fstat(1, &s->post_buff_1);
fstat(2, &s->post_buff_2);
int changed = (s->prev_buff_1.st_mtime != s->post_buff_1.st_mtime) ||
(s->prev_buff_2.st_mtime != s->post_buff_2.st_mtime);
bool changed = (s->prev_buff_1.st_mtime != s->post_buff_1.st_mtime) ||
(s->prev_buff_2.st_mtime != s->post_buff_2.st_mtime);
#if defined HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
changed = changed ||