In order to open PDFs using an external application, one can use the following script:
augroup nonvim au! au BufRead *.pdf sil exe "!open " . shellescape(expand("<afile>")) | bd augroup end
However, this is not optimal, because the pdf would still be loaded into vim, which will take a while if it is large. More importantly, your window layout will be messed up if you have more than one window showing, because of
So, I thought of using
BufReadPre instead of using
BufRead. This way, I may still be able to cancel reading the file into a buffer. The question is: how?