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tweaks: add three warnings for conditions that should never occur

master
Benno Schulenberg 2017-04-14 10:14:43 +02:00
parent bbc718633e
commit 6723ac6fcc
1 changed files with 6 additions and 3 deletions
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9
src/winio.c
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@ -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;