Show missing required param message when in standard library format #545
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Closes #544.
If the function has multiple required parameters each with their own message, this will only show the first missing param if it has a message.
The alternative to this is to show every missing parameter's message with an indicator to which arg they associate with, but this may be confusing in cases like
assert()
with no args. The error message would show the standard library format message ofA failed assertion without a message is unhelpful to users
, but the bigger issue is they aren't asserting anything at all.