linenoise: deal with some lingering line wrap glitch.

The optimized character insert case must handle the situation
of the cursor going off the edge of the screen when a
character is output in the last column in a manner that
is consistent with the regular insert, leaving the linenoise
structure in the same state that a full refresh would.

* linenoise/linenoise.c (refresh_multiline): In the optimized
character insert case indicated by need_refresh == 2, we
must add the check for the cursor being in the dead spot past
the edge of the screen, just like we do later in the function
for the regular refresh case. In that case we must advance the
cursor to the next line to get it out of the dead spot, and
adjust maxrows if necessary. We know we are in the dead spot
from the two rows values output by screen_rows. That function
puts out a nrow value that exceeds rows when that is the case.

1 files changed, 6 insertions, 0 deletions

diff --git a/linenoise/linenoise.c b/linenoise/linenoise.c
index 50e44e00..aef49384 100644
--- a/linenoise/linenoise.c
+++ b/linenoise/linenoise.c
@@ -1148,6 +1148,12 @@ static void refresh_multiline(lino_t *l) {
 
     if (l->need_refresh == 2) {
         l->oldrow = nrow;
+         if (nrow > rows) {
+            (void) lino_os.puts_fn(l->tty_ofs, L"\r\n");
+            rows++;
+            if (rows > l->maxrows)
+                l->maxrows = rows;
+         }
         return;
     }