Try to output the diff if lni.dtx is not adapted (#120)

.github/workflows/basic-check.yml

@@ -0,0 +1,48 @@
+name: check lni-paper-example-de
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  schedule:
+    - cron: '1 2 5 * *'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: reitzig/texlive-base:2023.1
+      options: --user root
+      env:
+        SRC_DIR: /__w/LNI/LNI
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Add x86_64-linuxmusl to PATH
+        run: echo "/usr/local/texlive/2023/bin/x86_64-linuxmusl" >> $GITHUB_PATH
+
+      - name: pdflatex lni-paper-example-de
+        run: /bin/entrypoint work pdflatex lni-paper-example-de
+
+      - name: biber lni-paper-example-de
+        run: /bin/entrypoint work biber lni-paper-example-de
+
+      - name: pdflatex lni-paper-example-de
+        run: /bin/entrypoint work pdflatex lni-paper-example-de
+
+      - name: pdflatex lni-paper-example-de
+        run: /bin/entrypoint work pdflatex lni-paper-example-de
+
+      - name: Upload build result
+        uses: actions/upload-artifact@v3
+        with:
+          name: PDFs
+          path: '/work/out'

.github/workflows/check.yml

@@ -3,7 +3,7 @@ name: check
 on:
   push:
     branches:
-      -main
+      - main
   pull_request:
   schedule:
     - cron: '1 2 5 * *'

.gitignore

@@ -4,6 +4,8 @@ lni-paper-example-de.pdf
 
 mybibfile.bib
 
+*.old
+
 *.hd
 
 ## Core latex/pdflatex auxiliary files:

build.sh

@@ -1,12 +1,25 @@
 set -e
-printf "\n\033[32mCompiling lni-paper-example-de using lni.cls\n\n\033[37m"
-pdflatex lni-paper-example-de
+
+cp lni.cls lni.old
+cp lni-paper-example-de.tex lni-paper-example-de.old
 
 printf "\nGenerating lni.cls, *.tex...\n\n"
 pdflatex lni.dtx
 pdflatex lni.dtx
 pdflatex lni.dtx
 
+FILES=("lni.cls" "lni.old" "lni-paper-example-de.tex" "lni-paper-example-de.old")
+for (( i=0; i<${#FILES[@]}; i+=2 )); do
+  DIFF=$(diff -w "${FILES[i]}" "${FILES[i+1]}")
+  if [ "$DIFF" != "" ]; then
+    printf "\033[31mFiles ${FILES[i]} and ${FILES[i+1]} differ:\033[37m\n"
+    echo "$DIFF"
+    printf "\033[31mPlease adapt lni.dtx to include these changes\033[37m\n"
+    printf "\nSee https://github.com/gi-ev/LNI/issues/108 for more background information\n"
+    exit 99
+  fi
+done
+
 printf "\n\033[32mCompiling lni-author-template...\n\n\033[37m"
 touch mybibfile.bib
 pdflatex lni-author-template

lni.cls

@@ -657,19 +657,19 @@
 \brokenpenalty=2000
 \vfuzz \hfuzz
 \raggedbottom
-%% 
+%%
 %% Copyright (C) 2016-2023 by Gesellschaft für Informatik e.V. (GI)
-%% 
+%%
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License (LPPL), either
 %% version 1.3c of this license or (at your option) any later
 %% version.  The latest version of this license is in the file:
-%% 
+%%
 %% http://www.latex-project.org/lppl.txt
-%% 
+%%
 %% This work is "maintained" (as per LPPL maintenance status) by
 %% Martin Sievers.
-%% 
+%%
 %% This work consists of the file  lni.dtx
 %%                                 lni.ins
 %%                                 README.md