From 6723ac6fcc4e2a1e280cff6becab75c1f8ce6183 Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@justemail.net>
Date: Fri, 14 Apr 2017 10:14:43 +0200
Subject: [PATCH] tweaks: add three warnings for conditions that should never
occur
---
src/winio.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/winio.c b/src/winio.c
index 738a50d7..d3b41ffd 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -2914,9 +2914,13 @@ void edit_scroll(scroll_dir direction, int nrows)
nrows -= go_forward_chunks(nrows, &openfile->edittop, &openfile->firstcolumn);
/* Don't bother scrolling zero rows, nor more than the window can hold. */
- if (nrows == 0)
+ if (nrows == 0) {
+ statusline(ALERT, "Underscrolling -- please report a bug");
return;
+ }
if (nrows >= editwinrows) {
+ if (editwinrows > 1)
+ statusline(ALERT, "Overscrolling -- please report a bug");
refresh_needed = TRUE;
return;
}
@@ -3120,9 +3124,8 @@ void adjust_viewport(update_type manner)
} else {
goal = openfile->current_y;
- /* Limit goal to (editwinrows - 1) rows maximum. */
if (goal > editwinrows - 1)
- goal = editwinrows - 1;
+ statusline(ALERT, "Row is out of range -- please report a bug");
}
openfile->edittop = openfile->current;
--
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