At Wed, 14 Mar 2018 11:49:06 +0100, "'Paulo Matos' via Racket Users" wrote:
> (command-line
> #:program "s10-tryout server"
> #:once-each
> [("-h" "--hostname") h
> "Hostname (optional)"
> (hostname h)]
> [...]
>
> The most interesting thing about this is how it fails (surely due to
> some error of mine), but without actually helping much even when called
> with errortrace:
>
> $ racket -l errortrace -t src/main.rkt
> parse-command-line: expected argument of type <table as a list of
> flag-list/procedure pairs (no pre-defined flags: "-h")>; given:
> '((once-each (("-h" "--hostname")
>
> [...]
>
> Should this be reported as a bug?
Yes, that's a bug. The `command-line` form should check the constraint
that a "-h" flag is disallowed, instead of generating a bad call to
`parse-command-line`.
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