.vimrc

" fixes arrow keys' problem
set nocompatible

" fixes backspace/delete key problem
set backspace=2

" shows line number
set number

" shows filename on title
set title

" shows where the cursor is
set ruler

" makes tab's size to 4 spaces
set tabstop=4

" converts tab spaces
set expandtab

" keeps 3 lines when scrolling
set scrolloff=3

" makes syntax highlighting on
syntax on

" indents if previous line was indented
set autoindent

" enables mouse support
set mouse=a

" fixes Windows keyboard's number pad problem
imap <Esc>Oq 1
imap <Esc>Or 2
imap <Esc>Os 3
imap <Esc>Ot 4
imap <Esc>Ou 5
imap <Esc>Ov 6
imap <Esc>Ow 7
imap <Esc>Ox 8
imap <Esc>Oy 9
imap <Esc>Op 0
imap <Esc>On .
imap <Esc>OR *
imap <Esc>OQ /
imap <Esc>Ol +
imap <Esc>OS -

" doesn't fold by default
set nofoldenable

" makes able to edit Japanese files
set encoding=utf-8
set fileencodings=iso-2022-jp,euc-jp,sjis,utf-8