I have never been happy with the text editors on either Linux or Windows. I have at various times used vi, nano, Notepad2, EditPad, Crimson Editor, NoteTab, Vim (blah). They all had something that I disliked but I have finally found the perfect text editor - SciTE.

I really like SciTE because:

• it supports syntax highlighting for most programming/scripting languages including Ruby,
  
• its multi-tabbed,
• its cross platform,
• has Regex search and replace, and
  
• it understands backslash expresssions in search and replace (i.e. \n -> \t)

Couple of SciTE tips - under global options set position.width=-1 and position.height=-1 so that SciTE opens up maximized. You might also want to modify check.if.already.open=1 which will open new files in a new tab instead of a new editor instance. Also get hold of scitecmd - it allows you to pipe data directly into SciTE - e.g. dir | sort | scitecmd -s