“Screw it, I'll make my own” – The story of a new programming language(breuleux.net)

    (let ((|This variable has spaces| 1))
      (print |This variable has spaces|))

    $ rlwrap tclsh 
    % set "var name with spaces" "contents of the variable"
    contents of the variable
    % puts ${var name with spaces}
    contents of the variable
    % set "var name with spaces"
    contents of the variable

    % proc {my space proc} {string} {puts "'my space proc' called with string='$string'"}

    % {my space proc} "hello how are you"
    'my space proc' called with string='hello how are you'
    % "my space proc" "the quick brown fox"
    'my space proc' called with string='the quick brown fox'
    % set pn "my space proc"
    my space proc
    % $pn "this that and the other"
    'my space proc' called with string='this that and the other'