From: "luke-gru (Luke Gruber) via ruby-core" <ruby-core@...>
Date: 2023-04-03T15:04:09+00:00
Subject: [ruby-core:113084] [Ruby master Bug#19566] OptionParser::on raises unsupported argument type: URI (ArgumentError) but shouldn't

Issue #19566 has been updated by luke-gru (Luke Gruber).





You need to `require optparse/uri`. The docs should probably mention that if they don't already.



----------------------------------------

Bug #19566: OptionParser::on raises unsupported argument type: URI (ArgumentError) but shouldn't

https://bugs.ruby-lang.org/issues/19566#change-102619



* Author: jgomo3 (Jes��s G��mez)

* Status: Open

* Priority: Normal

* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN

----------------------------------------

The documentation says



> OptionParser comes with a few ready-to-use kinds of type coercion. They are

> ..

> * URI ��� Anything accepted by URI.parse

>



But when I try to use the class `URI` as a coercion class: 



```

op = OptionParser.new

op.on("--uri URI", URI)

```



I get: `unsupported argument type: URI (ArgumentError)`. 



The workaround is to register it with `accept`:





```

op = OptionParser.new

op.accept(URI, &URI.method(:parse))

op.on("--uri URI", URI)

```



I attached 2 files, the first one `ruby-op-uri-bug.rb` displays the Error.



The second one, `ruby-op-uri-workaround.rb` show the proper output.



---Files--------------------------------

ruby-op-uri-bug.rb (340 Bytes)

ruby-op-uri-bug-workaround.rb (377 Bytes)





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