in libraries/plist.rb [84:103]
def plistbuddy_command(subcommand, entry, path, value = nil)
sep = ' '
arg = case subcommand.to_s
when 'add'
type_to_commandline_string(value)
when 'set'
if value.class == Hash
sep = ':'
value.map { |k, v| "#{k} #{v}" }
else
value
end
else
''
end
entry_with_arg = ["\"#{entry}\"", arg].join(sep).strip
subcommand = "#{subcommand.capitalize} :#{entry_with_arg}"
[plistbuddy_executable, '-c', "\'#{subcommand}\'", "\"#{path}\""].join(' ')
end