Misc tweaks, comments.

imgui.cpp

@@ -2054,6 +2054,10 @@ void ImFormatStringToTempBuffer(const char** out_buf, const char** out_buf_end,
     va_end(args);
 }
 
+// FIXME: Should rework API toward allowing multiple in-flight temp buffers (easier and safer for caller)
+// by making the caller acquire a temp buffer token, with either explicit or destructor release, e.g.
+//  ImGuiTempBufferToken token;
+//  ImFormatStringToTempBuffer(token, ...);
 void ImFormatStringToTempBufferV(const char** out_buf, const char** out_buf_end, const char* fmt, va_list args)
 {
     ImGuiContext& g = *GImGui;