.vimrc: set updatetime from 4000ms to 500ms This matters for certain async plugins, such as signify, that use CursorHold autocommand event. Signify recommends going as low as 100, but 500 should be good enough.

.vimrc: comment for colorcolumn

.vimrc: lower ctrlp window height

.vimrc: don't scan included files for insert mode completion

.vimrc: enable autoindent

.vimrc: t_Co should be set automatically nowadays If not, check your terminal settings and/or .bashrc or other sourced files. My current $TERM is set to xterm-256color by xfce4-terminal.

.vimrc: set termguicolors if $COLORTERM says it's possible

.vimrc: reset color for ColorColumn It used to be darker than background color, but lighter color isn't bad.

.vimrc: let color scheme set background

.vimrc: make comments slightly brighter (when running in cterm mode) Also explicitly use the original, not rehashed colors. My color tweaks probably only apply to one scheme anyway.