Hi,

Thanks to everyone for all the help. The problem was that I had

$text_blocks{en}{prolog} <<'PROLOG';
[download]

instead of

$text_blocks{en}{prolog} = <<'PROLOG';
[download]

in my first heredoc. Subsequent heredocs were OK, so I somehow missed it. D'oh!

Of course the point about the time spent writing and posting is correct. However, thanks to the your answer I now realise that I didn't need a one-liner to actually be on one line, but could simply embed the newlines.

Cheers,

loris