m4_pushdef([AT_CHECK],
[ORIGINAL_AT_CHECK(
m4_if(m4_quote(m4_substr(m4_quote($1), 0, 5)), [bison],
- m4_if([$2], [0], [], [$2], [], [],
+ m4_if(m4_quote($2), [0], [], m4_quote($2), [], [],
[[VALGRIND_OPTS="$VALGRIND_OPTS --leak-check=summary --show-reachable=no"; export VALGRIND_OPTS; ]]))$@)])
# Testing resistance to user bugs.