OptionParser does not work as expected for strict booleans

[spinettaro]

Elixir and Erlang/OTP versions

Erlang/OTP 26 [erts-14.1] [source] [64-bit] [smp:12:12] [ds:12:12:10] [async-threads:1] [jit:ns]

Elixir 1.15.6 (compiled with Erlang/OTP 26)

Operating system

Windows

Current behavior

iex(2)> OptionParser.parse(["--source", "false"], strict: [source: :boolean])
{[source: true], ["false"], []}

Expected behavior

iex(2)> OptionParser.parse(["--source", "false"], strict: [source: :boolean])
{[source: false], [], []}

I expect it to work like string

iex(1)>OptionParser.parse(["--source", "lib"], strict: [source: :string])
{[source: "lib"], [], []}

[wojtekmach]

boolean are in the form --foo and --no-foo, not --foo=x:

iex(1)> OptionParser.parse(["--no-source"], strict: [source: :boolean])
{[source: false], [], []}

[spinettaro]

ok thanks @wojtekmach, there was an ongoing discussion on openapi.spec repo open-api-spex/open_api_spex#579 . Just as reference

[spinettaro]

however I'm going to create a PR to make it more explicit in OptionParser documentation. Thanks again for the quick reply @wojtekmach