How to comment cmake code in ruby - ruby

Question

I need to comment a line in this Ruby code (I'm using Atom to edit files ... )
The line is the follow .. -DPROJ4_LIBRARY:FILEPATH=#{prefix_dir}/lib/libproj.so and here you're the code ...
bash 'build-and-install-libgeotiff' do
user "root"
code <<-EOH
cd "/tmp"
tar xzf libgeotiff-#{version}.tar.gz
cd libgeotiff-#{version}
export MAKEFLAGS='-j2'
[ -d build ] || mkdir build
cd build
cmake3 .. \
-DCMAKE_INSTALL_PREFIX=#{prefix_dir} \
-DWITH_JPEG=ON \
-DWITH_ZLIB=ON \
-DWITH_PROJ4=ON \
-DPROJ4_INCLUDE_DIR:PATH=#{prefix_dir}/include \
-DPROJ4_LIBRARY:FILEPATH=#{prefix_dir}/lib/libproj.so
-DPROJ4_LIBRARY:FILEPATH=/usr/lib64/libproj.so
make && make install
EOH
I've tried to use # but it seems not right because my editor put automatically #{} ... here you're the transformed code ...
bash 'build-and-install-libgeotiff' do
user "root"
code <<-EOH
cd "/tmp"
tar xzf libgeotiff-#{version}.tar.gz
cd libgeotiff-#{version}
export MAKEFLAGS='-j2'
[ -d build ] || mkdir build
cd build
cmake3 .. \
-DCMAKE_INSTALL_PREFIX=#{prefix_dir} \
-DWITH_JPEG=ON \
-DWITH_ZLIB=ON \
-DWITH_PROJ4=ON \
-DPROJ4_INCLUDE_DIR:PATH=#{prefix_dir}/include \
#{}-DPROJ4_LIBRARY:FILEPATH=#{prefix_dir}/lib/libproj.so
-DPROJ4_LIBRARY:FILEPATH=/usr/lib64/libproj.so
make && make install
EOH
How may I comment my line in this code?

Answer 1

In Bash, if you comment out something in a sequence of lines joined by \, you comment out everything after the #.
Here's a quick and dirty workaround.
code <<-EOH
cd "/tmp"
tar xzf libgeotiff-#{version}.tar.gz
cd libgeotiff-#{version}
export MAKEFLAGS='-j2'
[ -d build ] || mkdir build
cd build
so_arg="-DPROJ4_LIBRARY:FILEPATH=#{prefix_dir}/lib/libproj.so"
cmake3 .. \
-DCMAKE_INSTALL_PREFIX=#{prefix_dir} \
-DWITH_JPEG=ON \
-DWITH_ZLIB=ON \
-DWITH_PROJ4=ON \
-DPROJ4_INCLUDE_DIR:PATH=#{prefix_dir}/include \
$so_arg \
-DPROJ4_LIBRARY:FILEPATH=/usr/lib64/libproj.so
make && make install
EOH
Now, you can simply sed -i s/so_arg=/\1#/' file to comment it out.