vim

tabs as spaces

In the .vimrc file:

filetype plugin indent on
" show existing tab with 4 spaces width
set tabstop=4
" when indenting with '>', use 4 spaces width
set shiftwidth=4
" On pressing tab, insert 4 spaces
set expandtab

In vim:

:set tabstop=4
:set expandtab

Move to character position

Move to column 80

80|

Format json using python

:%!python -m json.tool

remove blank lines

:g/^\s*$/d