Feature #14603: Better error message when double-splatting hash with string keys

• Status: Closed
• Assignee: -
• Target version: -

[apotonick (Nick Sutterer)]

I couldn't find an existing issue even though I remember reading about it somewhere.

When double-splatting a hash with string keys, the error message is very cryptic.

a( **{ "key" => 1} )
#=> TypeError (wrong argument type String (expected Symbol))

Would it make sense to have a more descriptive error message here, such as "hash key "key" is not a Symbol" or something?

[shevegen (Robert A. Heiler)]

Ideally we could have some means to control the warning/error format. That
way people could select which variant to prefer, the default one or any
other way, like the one shown above.

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset trunk|r62752.

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vm.c: refined error message

• vm.c (kw_check_symbol): refined the error message for non-symbol
  key. [Feature #14603]