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instance method
OptionParser#ver
ver
lib/optparse.rb
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# File tmp/rubies/ruby-3.0.5/lib/optparse.rb, line 1219
def ver
if v = version
str = +"#{program_name} #{[v].join('.')}"
str << " (#{v})" if v = release
str
end
end
Returns version string from program_name, version and release.