Jed offers: Extensible in a language resembling C. Completely customizable. Capable of read GNU info files from within JED's info browser. A variety of programming modes (with syntax highlighting) are available including Pascal, Java, Perl, C, C++, FORTRAN, TeX, HTML, SH, IDL, DCL, NROFF, PostScript, Basic. Folding support. Edit TeX files with AUC-TeX style editing (BiBTeX support too). Rectangular cut/paste; regular expressions; incremental searches; search replace across multiple files; multiple windows; multiple buffers; shell modes; directory editor (dired); mail; rmail; ispell; and much more.
Note: The SLang runtime files are now in the package jedslc. The source of these files are in jedsl-src.
Note: In this version, C-h deletes the previous character instead of loading the help menu. Help is now on Esc-?.