enable copy and paste of command run by flatpak-builder

[muelli]

I'm playing around with flatpak-builder and it failed to compile a module.

========================================================================
Building module zbar in /home/muelli/myapp/.flatpak-builder/build/zbar-4
========================================================================
Running: flatpak build --nofilesystem=host --filesystem=/home/muelli/myapp/.flatpak-builder/build/zbar-4 --bind-mount=/run/build/zbar=/home/muelli/myapp/.flatpak-builder/build/zbar-4 --build-dir=/run/build/zbar --env=V=1 --env=CFLAGS=-O2 -g --env=CXXFLAGS=-O2 -g /tmp/fpbuilder ./configure --prefix=/app --disable-video
...
...
checking for python version... 2.7
checking for python platform... linux2
checking for python script directory... ${prefix}/lib/python2.7/site-packages
checking for python extension module directory... ${exec_prefix}/lib/python2.7/site-packages
checking for PYGTK... configure: error: Package requirements (pygtk-2.0) were not met:

No package 'pygtk-2.0' found

Fair enough.

I copied and pasted the "Running" line, but it failed:

$ flatpak build --nofilesystem=host --filesystem=/home/muelli/myapp/.flatpak-builder/build/zbar-4 --bind-mount=/run/build/zbar=/home/muelli/myapp/.flatpak-builder/build/zbar-4 --build-dir=/run/build/zbar --env=V=1 --env=CFLAGS=-O2 -g --env=CXXFLAGS=-O2 -g /tmp/fpbuilder ./configure --prefix=/app --disable-video
error: Unknown option -g
$

I expected copy and paste to work.

I guess it's missing quotes around the CFLAGS and CXXFLAGS.