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-rw-r--r--src/input_handler.cc17
1 files changed, 9 insertions, 8 deletions
diff --git a/src/input_handler.cc b/src/input_handler.cc
index 6aaefb61..fae254fb 100644
--- a/src/input_handler.cc
+++ b/src/input_handler.cc
@@ -1515,14 +1515,15 @@ void scroll_window(Context& context, LineCount offset)
SelectionList& selections = context.selections();
const BufferCoord cursor = selections.main().cursor();
- auto clamp_line = [&](LineCount line) { return clamp(line, 0_line, line_count-1); };
- auto min_line = clamp_line(win_pos.line + scrolloff.line);
- auto max_line = clamp_line(win_pos.line + win_dim.line - 1 - scrolloff.line);
- BufferCoord min_coord{min_line, buffer[min_line].byte_count_to(win_pos.column)};
- BufferCoord max_coord{max_line, buffer[max_line].byte_count_to(win_pos.column)};
-
- selections = SelectionList{buffer, clamp(cursor, min_coord, max_coord)};
-
+ using std::min; using std::max;
+ auto line = clamp(cursor.line, max(0_line, win_pos.line + scrolloff.line),
+ min(line_count-1, win_pos.line + win_dim.line - 1 - scrolloff.line));
+ // This is not exactly a clamp, and must be done in this order as
+ // byte_count_to could return line length
+ auto col = min(max(cursor.column, buffer[line].byte_count_to(win_pos.column)),
+ buffer[line].length()-1);
+
+ selections = SelectionList{buffer, BufferCoord{line, col}};
window.set_position(win_pos);
}