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Improve help and positional arg enforcement in most commands #161
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You could use
cobra.MaximumNArgs(1)
here.There was a problem hiding this comment.
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For now I figured custom validation lets me have better control of messages.
In this case, MaximumNArgs(1) would print:
which is not bad, but I felt saying "at most 1 role name" is more helpful.
I dumped my thoughts on this spf13/cobra#571 (comment)
Part of the problem using built-in validation funcs for us is that we disabled printing usage on error (
SilenceUsage: true
).The default behavior of dumping full description of all args on any error is too annoying for my taste too.
I think best behavior would be to print just the
Usage: ocm account roles [flags] [ROLE_NAME]
line on errors (user can always --help for details); if we had that it'd be reasonable to go back tocobra.MaximumNArgs
and friends.Opened spf13/cobra#1252, currently we can't
SetUsageTemplate
to something briefer without breaking --help, working on upstream improvement.There was a problem hiding this comment.
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I did add/leave many cobra.*Args and similar, without reviewing each message, largely because of laziness — this PR actually grew from 1 command with wrong help I wanted to fix 🤣
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Read your threads upstream and I agree, if we can expose
UseLine()
when Arg fails validation that would get us very close to full-lazy cmd definitions :)