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0a1cd37228
Previously, command_option_get used to return NULL in the following two scenarios: when command-line option with a such name didn’t exists or its argument was not provided. This worked great for the cmd-line options with the required arguments. With introduction of the cmd-line options with no or optional arguments the function was changed to return a boolean value indicating the existence of a such option and then, if it had an argument - value_out variable would have been set. Thereafter, this patch modifies the current usages of command_option_get. Note, in these particular applications of command_option_get there is no need to check the returned value from command_option_get, since these options have the required arguments and we can only check if the value_out parameter has been set or not.