.vimrc

syn on

" Disable mouse visual mode
set mouse-=a

" Highlight char 81 for long lines
2mat ErrorMsg '\%81v.'

" Highlight extra whitespace
autocmd ColorScheme * highlight ExtraWhitespace ctermbg=red guibg=red
highlight ExtraWhitespace ctermbg=darkblue guibg=darkblue
match ExtraWhitespace /\s\+$/
autocmd BufWinEnter * match ExtraWhitespace /\s\+$/
autocmd InsertEnter * match ExtraWhitespace /\s\+\%#\@<!$/
autocmd InsertLeave * match ExtraWhitespace /\s\+$/
autocmd BufWinLeave * call clearmatches()
autocmd InsertLeave * redraw!

" Short macro to clear trailing whitespace
let @c=':%s/\s\+$//'

" Tab settings
set tabstop=4       " The width of a TAB is set to 4.
                    " Still it is a \t. It is just that
                    " Vim will interpret it to be having
                    " a width of 4.
set shiftwidth=4    " Indents will have a width of 4
set softtabstop=4   " Sets the number of columns for a TAB
set expandtab       " Expand TABs to spaces