How do I use a variable containing a filename with spaces in a bash script?

Question

I have a simple bash script running on OS X that removes specific files and directories and copies new ones in their place. One Mac .app directory contains a space, and when I

Answer 1

enclose the whole final line in quotes:

"$CP $NEWAPP $INSTALL_DIR$NEWAPP"

it's unnecessary to keep opening and closing the quotes here, and the $CP must be contained in quotes as CP has a space in it.