Wrap Text in Vim
You have an existing block of text or code in Vim. You want to re-format it to wrap to 80 characters.
:set textwidth=80
Select the lines of text you want to re-format:
Shift+v
Reformat it:
gq
Learn more:
:h gq
If want the 80 character setting to apply automatically
for file types like Markdown,
add this to your vimrc
:
au BufRead,BufNewFile *.md setlocal textwidth=80