Reject !( in POSIX mode
POSIX now says "The behavior of the reserved word ! immediately followed by the ( operator is unspecified." Yash should reject (or at least warn about) such syntax.
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_02
Implemented in r3741
POSIX now says "The behavior of the reserved word ! immediately followed by the ( operator is unspecified." Yash should reject (or at least warn about) such syntax.
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_02