Update latexdiff.yml

.github/workflows/latexdiff.yml

@@ -76,6 +76,28 @@ jobs:
       - name: Copy thesis.cls to diff_output
         run: cp compare/latex/thesis.cls diff_output/
         
+      - name: Override “\input{preamble/fonts}” in diff.tex
+        run: |
+          sed -i '/\\input{preamble\/fonts}/c\
+          % — replaced by CI: use TeX Gyre fonts instead of Times New Roman/Arial       \
+          \setmainfont{TeX Gyre Termes}                                                   \
+          \setsansfont{TeX Gyre Heros}                                                    \
+          \setmonofont{TeX Gyre Cursor}\
+          ' diff_output/diff.tex
+          
+      - name: Print preview of diff.tex (after font override)
+        run: |
+          echo "📄 Preview of diff_output/diff.tex after font override:"
+          head -n 50 diff_output/diff.tex
+          
+      - name: Compile diff.tex to PDF
+        working-directory: diff_output
+        continue-on-error: true
+        run: |
+          xelatex -interaction=nonstopmode diff.tex
+          xelatex -interaction=nonstopmode diff.tex
+
+        
       - name: Compile diff.tex to PDF
         working-directory: diff_output
         run: |