add --list-fields option #588
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Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
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--list-fields helps a user who wants to know the letters for specifying fields.
In addition shell completion engine can utilize the output of this option to make completion rules for universal-ctags.
For implementing this new option, I reworked field related code.
I introduce fieldDesc struct. You can add a new field in rather declarative way like kindOption.
Potentially this structure will contribute at least two areas: