Harden block-mode EOL stepping and fix offset/underflow issues in helpers

.github/workflows/CI_build.yml

@@ -1,47 +1 @@
-name: CI build
 
-on:
-  pull_request:
-  push:
-    branches: [main]
-
-jobs:
-  build:
-    runs-on: windows-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        config: [Debug Unicode, Release Unicode]
-        platform: [Win32, x64]
-
-    name: ${{ matrix.config }} / ${{ matrix.platform }}
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup MSBuild
-        uses: microsoft/setup-msbuild@v2
-
-      - name: Setup NuGet
-        uses: NuGet/setup-nuget@v2
-
-      - name: Restore
-        run: nuget restore
-
-      - name: Build
-        run: |
-          msbuild NppTextFX2.sln ^
-            /p:Configuration="${{ matrix.config }}" ^
-            /p:Platform="${{ matrix.platform }}" ^
-            /m
-
-      # 🔵 Artefakte für Release builds (Win32 + x64)
-      - name: Upload Release artifact
-        if: matrix.config == 'Release Unicode'
-        uses: actions/upload-artifact@v4
-        with:
-          name: NppTextFX2_${{ matrix.platform }}
-          path: |
-            **/${{ matrix.platform }}/Release*/NppTextFX*.dll

SRC/NPPTextFX.cpp

@@ -4955,8 +4955,7 @@ EXTERNC void convertall(char cmd,unsigned flags,const char *s1,const char *s2,co
               SENDMSGTOCED(currentEdit, SCI_REPLACETARGET, chn, d);
             }
             d += chn;
-            if ((d[0]=='\r' && d[1]=='\n') || (d[0]=='\n' && d[1]=='\r')) d+=2;
-            else if (d[0]=='\r' || d[0]=='\n') d++;
+            d = memspn(d,end,"\r\n",2);
           }
           /*curpos = lpe[blocklines-1]+SENDMSGTOCED(currentEdit, SCI_POSITIONFROMLINE, p1line+blocklines-1, 0);
           if (curpos<anchor) curpos=anchor+1; // carefully constructed cases can push anchor ahead of curpos