InputTextMultiline: Fixed Tab character input not repeating

(1.89.4 regression)

docs/CHANGELOG.txt

@@ -64,6 +64,7 @@ Other changes:
 - Drag and Drop: Fixed drop target highlight on items temporarily pushing a widened clip rect
   (namely Selectables and Treenodes using SpanAllColumn flag) so the highlight properly covers
   all columns. (#7049, #4281, #3272)
+- InputTextMultiline: Fixed Tab character input not repeating (1.89.4 regression).
 - DragScalarN, SliderScalarN, InputScalarN, PushMultiItemsWidths: improve multi-components
   width computation to better distribute the error. (#7120, #7121) [@Nahor]
 - Menus: Tweaked hover slack logic, adding a timer to avoid situations where a slow vertical

imgui_widgets.cpp

@@ -4403,7 +4403,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
 
         // We expect backends to emit a Tab key but some also emit a Tab character which we ignore (#2467, #1336)
         // (For Tab and Enter: Win32/SFML/Allegro are sending both keys and chars, GLFW and SDL are only sending keys. For Space they all send all threes)
-        if ((flags & ImGuiInputTextFlags_AllowTabInput) && Shortcut(ImGuiKey_Tab, id) && !is_readonly)
+        if ((flags & ImGuiInputTextFlags_AllowTabInput) && Shortcut(ImGuiKey_Tab, id, ImGuiInputFlags_Repeat) && !is_readonly)
         {
             unsigned int c = '\t'; // Insert TAB
             if (InputTextFilterCharacter(&g, &c, flags, callback, callback_user_data, ImGuiInputSource_Keyboard))