Repeated string tail when run OutputLine command

[sinetoami]

When use vimux strategy the last characters of the string line is repeated. Exemple in the line:

ruby -e "(1..10).each { |num| puts num * 2 }"

The }" characters will been repeated and the command fails. The output will be something like:

ruby -e "(1..10).each { |num| puts num * 2 }" }"

I don't know why yet... Find a workaround.