Multiple line argument passing

I dont believe it's possible to format arguments on multiple lines.

doesn't work

$`
  fzf  
    --preview="cat {2}" 
    --with-nth="1"
`

doesn't work

$`
  fzf \ 
    --preview="cat {2}" \
    --with-nth="1"
`

doesn't work

$`\
  fzf \ 
    --preview="cat {2}" \
    --with-nth="1"
`

doesn't work

$`fzf \ 
    --preview="cat {2}" \
    --with-nth="1"
`

also doesn't work

$`
  fzf \\ 
    --preview="cat {2}" \\
    --with-nth="1"
`

doesn't work

$`\\
  fzf \\ 
    --preview="cat {2}" \\
    --with-nth="1"
`

doesn't work

$`fzf \\ 
    --preview="cat {2}" \\
    --with-nth="1"
`