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Say I have this vimscript as "/tmp/example.vim":
let g:input = "START; % END"
exec("! clear && echo " . shellescape(g:input))
If I open that file and run it with :so %, the output will be
START; /tmp/example.vim END
because the "%" is expanded to the buffer name. I want the output to be
START; % END
I can use the generic escape() method to escape percent signs in particular. This works:
let g:input = "START; % END"
exec("! clear && echo " . escape(shellescape(g:input), "%"))
But is that really the best way? I'm sure there're more characters I should escape. Is there a specific escape function for this purpose? Or a better way to shell out?