add: [Settings2]CopyMultiSelectionSeparator= config

Build/Notepad3.ini

@@ -24,6 +24,7 @@ SettingsVersion=5
 ;NoCGIGuess=0
 ;NoCopyLineOnEmptySelection=0
 ;NoCutLineOnEmptySelection=0
+;CopyMultiSelectionSeparator=   ;(-> <use current EOL>)  {use empty value for no separator}
 ;NoFadeHidden=0
 ;NoFileVariables=0
 ;NoHTMLGuess=0

src/Config/Config.cpp

@@ -1457,6 +1457,9 @@ void LoadSettings()
         }
     }
 
+    IniSectionGetString(IniSecSettings2, L"CopyMultiSelectionSeparator", L"\x01",
+        Settings2.CopyMultiSelectionSeparator, COUNTOF(Settings2.CopyMultiSelectionSeparator));
+
     for (int i = 0; i < COUNTOF(Settings2.CodeFontPrefPrioList); ++i) {
         if (i < COUNTOF(g_CodeFontPrioList))
             Settings2.CodeFontPrefPrioList[i] = g_CodeFontPrioList[i];

src/Edit.c

@@ -3322,9 +3322,19 @@ void EditCopyMultiSelection(HWND hwnd)
         return;
     }
     if (Sci_IsMultiSelection()) {
-        char pchSep[3] = { '\0' };
-        Sci_GetCurrentEOL_A(pchSep);
-        SciCall_SetCopySeparator(pchSep);
+        if (Settings2.CopyMultiSelectionSeparator[0] == L'\x01') {
+            // not set → use current EOL
+            char pchSep[3] = { '\0' };
+            Sci_GetCurrentEOL_A(pchSep);
+            SciCall_SetCopySeparator(pchSep);
+        } else {
+            // use configured separator (may be empty)
+            char chSep[MICRO_BUFFER * 2] = { '\0' };
+            WideCharToMultiByte(Encoding_SciCP, 0,
+                Settings2.CopyMultiSelectionSeparator, -1,
+                chSep, COUNTOF(chSep), NULL, NULL);
+            SciCall_SetCopySeparator(chSep);
+        }
     }
     SciCall_Copy();
 }

src/TypeDefs.h

@@ -832,6 +832,8 @@ typedef struct SETTINGS2_T {
 
     WCHAR HyperlinkFileProtocolVerb[MICRO_BUFFER];
 
+    WCHAR CopyMultiSelectionSeparator[MICRO_BUFFER];
+
     const WCHAR* CodeFontPrefPrioList[MICRO_BUFFER];
     const WCHAR* TextFontPrefPrioList[MICRO_BUFFER];