External output to vim buffer AFTER command completes

Question

I'm currently using gVim on Windows 7

Running a command like:

:r! racket %

I am able to successfully read in the desired output about half of the time. The rest of the time, nothing is read. It seems to be an issue with vim reading in the output before the shell execution has terminated and actually generated some output.

Any ideas?

Answer 1

From :help :r!

:[range]r[ead] !{cmd}   Execute {cmd} and insert its standard output below
            the cursor or the specified line.  A temporary file is
            used to store the output of the command which is then
            read into the buffer.  'shellredir' is used to save
            the output of the command, which can be set to include
            stderr or not.  {cmd} is executed like with ":!{cmd}",
            any '!' is replaced with the previous command |:!|.

It could be that you need to set :help shellredir to include stderr.