I came across some m4 problems when trying to compile sox
(a future version of the audio/sox port), which uses the
horrendous autotools to create it's ./configure script.
These tools in turn use m4 to define their macros.
What should the following print?
(Please excuse my m4 ignorance.)
divert(-1)dnl
changequote([, ])
define([dquote], [[$@]])
define([argn], [pushdef([_$0], [popdef([_$0])]dquote([$]incr([$1])))_$0($@)])
define([foo], [argn([10], $@)])
define([bar], [argn([9], shift($@))])
define([baz], [argn([8], shift(shift($@)))])
define([numbers], [[1], [2], [3], [4], [5], [6], [7], [8], [9], [10]])
divert(0)dnl
foo(numbers)
bar(numbers)
baz(numbers)
According to upstream, it should be
10
10
10
On current, it's
101
90
10
Jan
https://marc.info/?l=sox-devel&m=159803236823541&w=2
https://sourceforge.net/p/sox/code/ci/affc279d142f843f3f50d4718798303396ee24b4/
