docs: clarify SortFlags example with complete runnable program#488
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The existing SortFlags example used 'flags.SortFlags' without showing that SortFlags is a field on FlagSet, not a package-level variable. This led to confusion for users who tried to use pflag.SortFlags directly. Updated the example to show a complete program using NewFlagSet, and added a separate note for the CommandLine case. Fixes spf13#456
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Summary
Fixes #456
The existing SortFlags example used
flags.SortFlagswithout showing that SortFlags is a field on FlagSet, not a package-level variable. This led to confusion for users who tried to usepflag.SortFlagsdirectly (pflag.SortFlagsdoes not exist).Changes
NewFlagSetCommandLinecase:pflag.CommandLine.SortFlags = falsemain()function