Misleading error message when appending queries

[tpoliaw]

I am using trurl to append fields to a query to avoid url encoding them.

From the reading the man page, not paying enough attention and misinterpreting Long options can be provided either as --flag argument or as --flag=argument and -a, --append [component]=[data], I ran

trurl --url http://localhost:8000 --append query foo=bar

and got the error

trurl error: --append unsupported component: query

While the examples in the docs do use query=key=value, it threw me when it said query wasn't supported. Could the error be something like component query missing data or similar?

Thanks, and thanks for trurl in general, really helpful tool.

[jacobmealey]

Perhaps there should be a hierarchy for some of the errors, where we ensure the flag is formatted properly, something like --append expected '=' after 'query' and then if it knows its in the right form we can make judgements on whether it's supported or not.