patch 8.0.0542: getpos() can return a negative line number
Problem: getpos() can return a negative line number. (haya14busa)
Solution: Handle a zero topline and botline. (closes #1613)
diff --git a/src/eval.c b/src/eval.c
index e588c23..261ece8 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -6120,13 +6120,16 @@
if (name[1] == '0') /* "w0": first visible line */
{
update_topline();
- pos.lnum = curwin->w_topline;
+ /* In silent Ex mode topline is zero, but that's not a valid line
+ * number; use one instead. */
+ pos.lnum = curwin->w_topline > 0 ? curwin->w_topline : 1;
return &pos;
}
else if (name[1] == '$') /* "w$": last visible line */
{
validate_botline();
- pos.lnum = curwin->w_botline - 1;
+ /* In silent Ex mode botline is zero, return zero then. */
+ pos.lnum = curwin->w_botline > 0 ? curwin->w_botline - 1 : 0;
return &pos;
}
}