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module Kernel
# Require a library with fallback to RubyGems. Warnings during library
# loading are silenced to increase signal/noise for application warnings.
def require_library_or_gem(library_name)
silence_warnings do
begin
require library_name
rescue LoadError => cannot_require
# 1. Requiring the module is unsuccessful, maybe it's a gem and nobody required rubygems yet. Try.
begin
require 'rubygems'
rescue LoadError => rubygems_not_installed
raise cannot_require
end
# 2. Rubygems is installed and loaded. Try to load the library again
begin
require library_name
rescue LoadError => gem_not_installed
raise cannot_require
end
end
end
end
end
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