The tokenizer didn't handle $$, but relied on token pasting of two $ tokens. This broke after the improvements in 9bb46df4.
9bb46df4
Using hidden files are rather antisocial, and rather pointless in this particular context. Change .stdout and .stderr to simply stdout and stderr. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Using multiple %else clauses or mixing %else and %elif caused strange results. Warn about it and produce sensible results.
