Generate action cannot find slice in certain code formatting styles

[gstark]

When using hanamismith the generated routes.rb looks like:

  # Configures application routes.
  class Routes < Hanami::Routes
    slice(:health, at: "/status") { root to: "show" }
    slice(:main, at: "/") { root to: "home.show" }
  end

When running a command such as hanami g action home.subscribe --slice=main --url='/subscribe' --http=post, the following error is raised:

/Users/me/.gem/ruby/3.2.0/gems/dry-files-1.0.1/lib/dry/files.rb:957:in `index': cannot find `(?-mix:slice[[:space:]]*:main)' in `config/routes.rb' (Dry::Files::MissingTargetError)
	from /Users/me/.gem/ruby/3.2.0/gems/dry-files-1.0.1/lib/dry/files.rb:685:in `inject_line_at_block_bottom'
	from /Users/me/.gem/ruby/3.2.0/gems/hanami-cli-2.0.3/lib/hanami/cli/generators/app/action.rb:73:in `generate_for_slice'
	from /Users/me/.gem/ruby/3.2.0/gems/hanami-cli-2.0.3/lib/hanami/cli/generators/app/action.rb:28:in `call'
	from /Users/me/.gem/ruby/3.2.0/gems/hanami-cli-2.0.3/lib/hanami/cli/commands/app/generate/action.rb:72:in `call'
	from /Users/me/.gem/ruby/3.2.0/gems/hanami-cli-2.0.3/lib/hanami/cli/commands/app/command.rb:40:in `call'
	from /Users/me/.gem/ruby/3.2.0/gems/dry-cli-1.0.0/lib/dry/cli.rb:116:in `perform_registry'
	from /Users/me/.gem/ruby/3.2.0/gems/dry-cli-1.0.0/lib/dry/cli.rb:65:in `call'
	from /Users/me/.gem/ruby/3.2.0/gems/hanami-cli-2.0.3/exe/hanami:11:in `<top (required)>'
	from /Users/me/.gem/ruby/3.2.0/bin/hanami:25:in `load'
	from /Users/me/.gem/ruby/3.2.0/bin/hanami:25:in `<main>'

I believe this happens because the regular expression below expects a form without parenthesis.

def slice_matcher(slice)
  /slice[[:space:]]*:#{slice}/
end

Reference: PR on hanamismith