Clipper: Fixed a bug if attempt to force-include a range which matches an already included range. (#3841)

docs/CHANGELOG.txt

@@ -61,6 +61,8 @@ Other changes:
 - ColorEdit, ColorPicker: Manipulating options popup don't mark item as edited. (#6722)
   (Note that they may still be marked as Active/Hovered.)
 - Clipper: Added IncludeItemByIndex() helper to include a single item. (#6424, #3841)
+- Clipper: Fixed a bug if attempt to force-include a range which matches an already
+  included range, clipper would end earlier. (#3841)
 - ImDrawData: Fixed an issue where TotalVtxCount/TotalIdxCount does not match the sum
   of individual ImDrawList's buffer sizes when a dimming/modal background is rendered. (#6716)
 - ImDrawList: Automatically calling ChannelsMerge() if not done after a split.

imgui.cpp

@@ -2975,13 +2975,15 @@ static bool ImGuiListClipper_StepInternal(ImGuiListClipper* clipper)
     }
 
     // Step 0+ (if item height is given in advance) or 1+: Display the next range in line.
-    if (data->StepNo < data->Ranges.Size)
+    while (data->StepNo < data->Ranges.Size)
     {
         clipper->DisplayStart = ImMax(data->Ranges[data->StepNo].Min, already_submitted);
         clipper->DisplayEnd = ImMin(data->Ranges[data->StepNo].Max, clipper->ItemsCount);
         if (clipper->DisplayStart > already_submitted) //-V1051
             ImGuiListClipper_SeekCursorForItem(clipper, clipper->DisplayStart);
         data->StepNo++;
+        if (clipper->DisplayStart == clipper->DisplayEnd && data->StepNo < data->Ranges.Size)
+            continue;
         return true;
     }
 

imgui.h

@@ -26,7 +26,7 @@
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
 #define IMGUI_VERSION       "1.89.9 WIP"
-#define IMGUI_VERSION_NUM   18984
+#define IMGUI_VERSION_NUM   18985
 #define IMGUI_HAS_TABLE
 
 /*