Is it possible to apply vim configurations without restarting?

Question

I want to edit .vimrc file from Vim and apply them without restarting Vim.

Answer 1

Here's a more cross-platform compatible version if you run on Mac/Windows/Linux and gvimrc:

augroup myvimrc
    au!
    au BufWritePost .vimrc,_vimrc,vimrc,.gvimrc,_gvimrc,gvimrc so $MYVIMRC | if has('gui_running') | so $MYGVIMRC | endif
augroup END

The autocmd watches all potential *vimrc files and when one changes, it reloads the vimrc file followed by gvimrc if the GUI is running.