Improve mouse scrolling

src/text_editor/buffer.cpp

@@ -489,15 +489,23 @@ Line GetLineByIndex(Buffer &buffer, int64_t line) {
 
 Line FindLine(Buffer &buffer, int64_t pos) {
     Line result = {};
+
     For(buffer.lines) {
-        bool found_last = (pos == it.min && pos == it.max); // @end_of_buffer
-        bool found      = pos >= it.min && pos < it.max;
-        if (found || found_last) {
+        if (pos >= it.min && pos < it.max) {
             result = {buffer.lines.get_index(it), it, it.max};
             if (it.max > it.min && GetChar(buffer, it.max - 1) == '\n') result.max_without_new_line -= 1;
-            break;
+            return result;
         }
     }
+
+    if (pos == buffer.len) { // @end of buffer
+        auto &it = buffer.lines[buffer.lines.len - 1];
+        Assert(it.max == buffer.len);
+        result = {buffer.lines.get_index(it), it, it.max};
+        if (it.max > it.min && GetChar(buffer, it.max - 1) == '\n') result.max_without_new_line -= 1;
+        return result;
+    }
+
     return result;
 }