How to make the vim call function in .bashrc?

Question

Environment: debian9+vim7.4.

   cat .bashrc
   add(){
        echo $(expr $1 + $2)
    }

Now edit a file in vim

add 1 5         


        

Answer 1

I suppose this should solve it for you. It's more of a workaround than an explanation of you problem but it gets the job done

:execute '! source ~/.bashrc; source '.expand('%:p')

I'm just manually sourcing bashrc before calling the command. One possible explanation to your problem is if you are on a mac. As far as I know OSX don't source bashrc, they do source bash_profile though.