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Feature #3631
closed[PATCH] lib/rake.rb: allow passing nil to sh() and ruby()
Description
=begin
This patch allows you to pass nil values to Rake's sh() and ruby()
methods. This is useful when you want to conditionally pass arguments
to the child program you are executing.
For example, suppose you want to pass '-v' to a child program if the
user ran Rake in tracing mode (rake --trace), but not otherwise:
sh 'asciidoc', ('-v' if Rake.application.options.trace), 'input.txt'
Without this patch, you have to carefully construct an arguments array
so that it does not contain nil values:
args = []
args << '-v' if Rake.application.options.trace
args << 'input.txt'
sh 'asciidoc', *args
Sadly, this becomes very tiresome when performed more than a few times.
Thanks for your consideration.
=end
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