Mapping one key to multiple commands in vim

Question

I understand that in order to execute multiple command in one line, for example save and execute pdflatex, I can do the following.

:w | !pdflate         


        

Answer 1

Assuming actually works (it probably won't in CLI Vim), you must escape the bar or use instead:

:nnoremap  :up \| !pdflatex %:t
:nnoremap  :up  !pdflatex %:t

See :help map_bar.