doc: ci: check for trailing white space in generated introspected-x.h

utils/tests/gitlab-ci-doc.yml

@@ -7,7 +7,6 @@
     - pacman-key --init
     - pacman -Syu --noconfirm
       base-devel ninja cmake python ccache gsl gtk3 boost
-      git
       doxygen graphviz imagemagick dia texlive-core texlive-bin texlive-latexextra python-sphinx
     # no policy is a good policy.
     - mv /etc/ImageMagick-7/policy.xml /etc/ImageMagick-7/policy.xml.bak
@@ -27,6 +26,7 @@ doxygen:
     - export CCACHE_DIR=${PWD}/$CCACHE_BASEDIR_VALUE
     - CXX=$COMPILER ./ns3 configure --enable-examples --enable-tests --enable-asserts -d default
     - ./ns3 build
+    - ./ns3 build assemble-introspected-command-line
 #    - mkdir -p public/doxygen
 # The following four lines were needed when ns-3 had warnings, and
 # it was necessary to have a filter to check only the files tocuhed by a MR.
@@ -35,6 +35,9 @@ doxygen:
 #    - export CHANGED_FILES=$(git diff --name-only ns-3-origin/master --diff-filter=d | tr '\n' ' ' | sed 's/ $//g;s/ /\\\|/g')
 #    - doc/doxygen.warnings.report.sh -f "$CHANGED_FILES"
     - doc/doxygen.warnings.report.sh
+# Just need to check doc/introspected-command-line.h and doc/introspected-doxygen.h
+    - python3 utils/trim-trailing-whitespace.py --check doc/introspected-doxygen.h
+    - python3 utils/trim-trailing-whitespace.py --check doc/introspected-command-line.h
 #    - doxygen doc/doxygen.conf
 #    - mv doc/html/ public/doxygen
   cache: