Generally Tomboy follows the Mono Coding Guidelines, outlined here:

http://www.mono-project.com/Coding_Guidelines

Exceptions

• Variable, member, and argument names should use "C style" naming with underlines, as in "white_cat" and "my_argument"

• The opening brace for classes and properties should always be on a new line

Editor Information

geany

• Edit -> Preferences -> Editor

  • Width: 8
  • Type: Tabs

monodevelop

• Edit -> Preferences -> Text Editor

  • Tab indent size: 8
  • un-Check 'Convert tabs to spaces'

vim

Place these commands in your vimrc

• set tabstop=8 " use 8 spaces for tabs
• set sw=8 " use 8 spaces when doing smart indents (shiftwidth)