Misc: Avoid stb_textedit.h reincluding string.h while in a namespace. (#6653, #4791)

docs/CHANGELOG.txt

diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 5030615..4bef3a9 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -85,6 +85,8 @@
   desirable behavior.
 - Misc: Added IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION config macro to disable
   stb_sprintf implementation when using IMGUI_USE_STB_SPRINTF. (#6626) [@septag]
+- Misc: Avoid stb_textedit.h reincluding string.h while in a namespace, which
+  messes up with building with Clang Modules. (#6653, #4791) [@JohelEGP]
 - Demo: Better showcase use of SetNextItemAllowOverlap(). (#6574, #6512, #3909, #517)
 - Demo: Showcase a few more InputText() flags.
 - Backends: Made all backends sources files support global IMGUI_DISABLE. (#6601)

imgui_widgets.cpp

diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
index d79d1e7..1f54616 100644
--- a/imgui_widgets.cpp
+++ b/imgui_widgets.cpp
@@ -3812,6 +3812,7 @@
 #define STB_TEXTEDIT_K_SHIFT        0x400000
 
 #define STB_TEXTEDIT_IMPLEMENTATION
+#define STB_TEXTEDIT_memmove memmove
 #include "imstb_textedit.h"
 
 // stb_textedit internally allows for a single undo record to do addition and deletion, but somehow, calling