Question

I am writing a (terrible) CSS minifier and ran into some trouble when removing spaces.

I have the following to remove spaces generally but spaces matter in CSS. So to compensate I am trying to remove the spaces from between the curly braces only.

sed -i 's/ //g' screen.css  #all spaces everywhere

trying

sed -i 's/{ }//g' screen.css  #all spaces between brackets everywhere

does not work.

Can someone point me in the right direction.
(This command is running from a file/bash script)

Answer 1

Using sed with regex ranges:

sed -i '/{/,/}/{s/\s*//g}' screen.css