具有良好插件支持的终端仿真器？

Question

Is there any good linux terminal emulator that supports plugins?

What I am after:

• Open source
• Being able to highlight and color text fragments
• Being able to tweak the GUI (create popup windows, present menus and buttons integrated with the text display -- for instance to open the man page in a floating window when clicking on a command name)
• Being able to write plugins in a number of languages (Ruby preferred)

Cheers!

Answer 1

All that I found:

• termit - extensible via lua

• rxvt-unicode - extensible via perl