linenoise: no upward retrace after suspend resume.

* linenoise/linenoise.c (edit): After coming back
from a Ctrl-Z suspend, set l->maxrows to zero to force
refresh_multiline to draw the buffer from the current
cursor position down, without any retrograde cursor movement
to above lines, trying to refresh existing lines which
are not there.

1 files changed, 1 insertions, 0 deletions

diff --git a/linenoise/linenoise.c b/linenoise/linenoise.c
index 2ba472f5..a48ad4d1 100644
--- a/linenoise/linenoise.c
+++ b/linenoise/linenoise.c
@@ -1976,6 +1976,7 @@ static int edit(lino_t *l, const char *prompt)
                 disable_raw_mode(l);
                 raise(SIGTSTP);
                 enable_raw_mode(l);
+                l->maxrows = 0;
                 l->dpos = dpos;
                 l->need_refresh = 1;
             }