Fix the regex syntax for $OLD_VERSION and save $FUTURE_VERSION fo…

…r later use.

.github/workflows/cpp-python-build.yml

@@ -337,7 +337,7 @@ jobs:
         run: ctest -R fpectl --build-config RelWithDebInfo -V
       - name: Test JSBSim
         working-directory: build
-        run: ctest -- parallel $Env:NUMBER_OF_PROCESSORS --build-config RelWithDebInfo --output-on-failure
+        run: ctest --parallel $Env:NUMBER_OF_PROCESSORS --build-config RelWithDebInfo --output-on-failure
 
     # On failure, upload logs
       - name: On failure - Upload logs
@@ -843,8 +843,9 @@ jobs:
           # Extract from CMake the project version number at the next release.
           echo "message(STATUS \"JSBSIM_VERSION:\${PROJECT_VERSION}\")" >> src/CMakeLists.txt
           export FUTURE_VERSION=`cmake . | grep JSBSIM_VERSION | awk -F':' '{print $2}'`
+          echo "FUTURE_VERSION=$FUTURE_VERSION" >> $GITHUB_ENV
           # Extract the project old version number
-          export OLD_VERSION=`egrep 'JSBSim-([0-9]+\.)+[0-9]+-setup.exe' README.md | awk -F'JSBSim-' '{ print $2}' | awk -F'-setup.exe' '{ print $1}'`
+          export OLD_VERSION=`egrep 'JSBSim-([0-9]+\.)+[0-9]+-setup.exe' README.md | awk -F'JSBSim-' '{ print $2}' | awk -F'-setup.exe' '{ print $1}' | sed 's/\./\\\\./g'`
           echo "OLD_VERSION=$OLD_VERSION" >> $GITHUB_ENV
           # Update references to the current stable version in README.md
           sed -ri 's/_'"$OLD_VERSION"'-[0-9]+.amd64.deb/_'"$VERSION"'-'"$GITHUB_RUN_NUMBER"'.amd64.deb/g' README.md