Bug#126434: ITP: super-sed -- An enhanced version of sed
ssed is a version of sed that supports a few new features, including Perl
regular expressions and much greater speed than GNU sed. A few experimental
features were mutuated from Perl, including in-place editing (the `i' flag)
and the ability to pipe a command in the Bourne shell was added.
Super sed is derived from GNU sed 3.02 and is licensed under GPL. However it
is not a GNU project package.