As you may know, mEdit (MooEdit) is an open-source programming and around-programming text editor.
Among others, it has syntax highlighting features, configurable keyboard acceleration, regular expression search/replace, grep front-end and built-in file selector.
The latest version available is mEdit 1.2.0, which has been recently released.
The latest mEdit builds are available via some third party PPA, so installing the software on Ubuntu systems is easy.
All you need to do is add the PPA to your system, update the local repository index and install the medit package:
$ sudo add-apt-repository ppa:anton+/miscellaneous
$ sudo apt-get update
$ sudo apt-get install medit
Optional, to remove medit, do:
$ sudo apt-get remove medit
The installation instructions should work on Ubuntu 15.10 Wily Werewolf, Ubuntu 15.04 Vivid Vervet, Ubuntu 14.04 Trusty Tahr, Linux Mint 17.x, Elementary OS 0.3 Freya and other Ubuntu derivative systems.