How can I execute a Vim command followed by external commands execution?

Question

The command looks like this

autocmd! BufWritePost <buffer> mark s | $r ! ruby % | sed 's/^/\#=> /' | 's

It will append the output and move cursor to the original position, before appending.

This is the error I got:

Error detected while processing BufWritePost Auto commands for "<buffer=1>":
E485: Can't read file /var/folders/fw/045tt2q10zv1qkbfbw73y8c80000gn/T/vCDqw9b/7

If remove | 's at the end of line, it works fine, but no returning to the marked s position.

Ingo Karkat · Accepted Answer · 2014-05-24 10:59:07Z

3

There are two problems:

The :read ! ... command cannot be concatenated with other Vim commands; it treats all following text as the command to execute. This causes the shell error. See :help :bar. You can fix this by wrapping with :execute.
's is a normal mode command; to use it in a command-line, you need to prefix the :normal Ex command.

autocmd! BufWritePost <buffer> mark s | execute "$r ! ruby % | sed 's/^/\#=> /' " | normal! 's

answered May 24, 2014 at 10:59

Ingo Karkat

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