DrawList: Allow AddText() to accept null ranges. (#3615, 7391)

docs/CHANGELOG.txt

@@ -69,6 +69,7 @@ Other changes:
   consistency. (#7411) [@cfillion]
 - DrawList: Added AddConcavePolyFilled(), PathFillConcave() concave filling. (#760) [@thedmd]
   Note that only simple polygons (no self-intersections, no holes) are supported.
+- DrawList: Allow AddText() to accept null ranges. (#3615, 7391)
 - Docs: added more wiki links to headers of imgui.h/imgui.cpp to facilitate discovery
   of interesting resources, because github doesn't allow Wiki to be crawled by search engines.
   - This is the main wiki: https://github.com/ocornut/imgui/wiki

imgui.h

@@ -28,7 +28,7 @@
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
 #define IMGUI_VERSION       "1.90.5 WIP"
-#define IMGUI_VERSION_NUM   19046
+#define IMGUI_VERSION_NUM   19047
 #define IMGUI_HAS_TABLE
 
 /*
@@ -177,7 +177,7 @@ struct ImGuiViewport;               // A Platform Window (always only one in 'ma
 // - Tip: Use your programming IDE navigation facilities on the names in the _central column_ below to find the actual flags/enum lists!
 //   - In Visual Studio: CTRL+comma ("Edit.GoToAll") can follow symbols inside comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
 //   - In Visual Studio w/ Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols inside comments.
-//   - In Visual Studio Code: CTRL+click can follow symbols inside comments.
+//   - In VS Code, CLion, etc.: CTRL+click can follow symbols inside comments.
 enum ImGuiKey : int;                // -> enum ImGuiKey              // Enum: A key identifier (ImGuiKey_XXX or ImGuiMod_XXX value)
 enum ImGuiMouseSource : int;        // -> enum ImGuiMouseSource      // Enum; A mouse input source identifier (Mouse, TouchScreen, Pen)
 typedef int ImGuiCol;               // -> enum ImGuiCol_             // Enum: A color identifier for styling
@@ -194,7 +194,7 @@ typedef int ImGuiTableBgTarget;     // -> enum ImGuiTableBgTarget_   // Enum: A
 // - Tip: Use your programming IDE navigation facilities on the names in the _central column_ below to find the actual flags/enum lists!
 //   - In Visual Studio: CTRL+comma ("Edit.GoToAll") can follow symbols inside comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
 //   - In Visual Studio w/ Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols inside comments.
-//   - In Visual Studio Code: CTRL+click can follow symbols inside comments.
+//   - In VS Code, CLion, etc.: CTRL+click can follow symbols inside comments.
 typedef int ImDrawFlags;            // -> enum ImDrawFlags_          // Flags: for ImDrawList functions
 typedef int ImDrawListFlags;        // -> enum ImDrawListFlags_      // Flags: for ImDrawList instance
 typedef int ImFontAtlasFlags;       // -> enum ImFontAtlasFlags_     // Flags: for ImFontAtlas build
@@ -1551,7 +1551,7 @@ enum ImGuiCol_
 // - Tip: Use your programming IDE navigation facilities on the names in the _second column_ below to find the actual members and their description.
 //   - In Visual Studio: CTRL+comma ("Edit.GoToAll") can follow symbols inside comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
 //   - In Visual Studio w/ Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols inside comments.
-//   - In Visual Studio Code: CTRL+click can follow symbols inside comments.
+//   - In VS Code, CLion, etc.: CTRL+click can follow symbols inside comments.
 // - When changing this enum, you need to update the associated internal table GStyleVarInfo[] accordingly. This is where we link enum values to members offset/type.
 enum ImGuiStyleVar_
 {

imgui_demo.cpp

@@ -56,7 +56,7 @@
 // Navigating this file:
 // - In Visual Studio: CTRL+comma ("Edit.GoToAll") can follow symbols inside comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
 // - In Visual Studio w/ Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols inside comments.
-// - In Visual Studio Code: CTRL+click can follow symbols inside comments.
+// - In VS Code, CLion, etc.: CTRL+click can follow symbols inside comments.
 
 /*
 

imgui_draw.cpp

@@ -1613,10 +1613,11 @@ void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos,
     if ((col & IM_COL32_A_MASK) == 0)
         return;
 
+    // Accept null ranges
+    if (text_begin == text_end || text_begin[0] == 0)
+        return;
     if (text_end == NULL)
         text_end = text_begin + strlen(text_begin);
-    if (text_begin == text_end)
-        return;
 
     // Pull default font/size from the shared ImDrawListSharedData instance
     if (font == NULL)

imgui_tables.cpp

@@ -26,7 +26,7 @@ Index of this file:
 // Navigating this file:
 // - In Visual Studio: CTRL+comma ("Edit.GoToAll") can follow symbols inside comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
 // - In Visual Studio w/ Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols inside comments.
-// - In Visual Studio Code: CTRL+click can follow symbols inside comments.
+// - In VS Code, CLion, etc.: CTRL+click can follow symbols inside comments.
 
 //-----------------------------------------------------------------------------
 // [SECTION] Commentary