Likely: {9} Construct more comprehensive test vectors. {8} Improve the documentation. {8} Add +N addressing (e.g., /foo/,+4d; /foo/+3,/bar/+2 s/foo/bar/). {8} Generalize ~ addressing (e.g., /foo/,~4d; /foo/+3,/bar/~2 s/foo/bar/). {7} Make lib/regex.c handle [[=x=]] and [[.x.]]. (Alternatively: make rx library perform reasonably.) {7} Look into improving regex performance. {6} Allow for NULs in command script files. Maybe: {6} Add i18n support. [Need others to do translations.] {6} Warn/error for \` and \' in impossible contexts. [Only if can cleanly patch regex.c without breaking other apps which really want the distinction between these and ^ and $; otherwise this becomes a {1}.] {5} Use tcov to construct more extensive test vectors. {5} Allow compilation with different regexp libraries. {4} Add -N addressing (e.g., /foo/-3,/bar/+2 s/foo/bar/). Unlikely: {1} Add filters (Use perl instead.)