My solution for this has been on my Linux machine, using keyd, to swap alt and super, and map super+c, super+v to copy and paste. (I also map super+L, super+R, super+T and super+W in Firefox to the control- equivalents using keyd’s per-application bindings functionality)
Why? The quotes will be consumed by the shell when you execute the command, unless you do like
"'{}'"