optparse can't pass argument into test runner properly

[Watson1978]

The latest optparser changing can't pass argument into test runner properly since ruby/ruby@9e265b583b commit.

ruby -r test/unit -e'p ARGV; require "test/unit"; class T < Test::Unit::TestCase; def test_x = nil; end ' -- -v
["-v"]
invalid argument: -v
Test::Unit automatic runner.
Usage: -e [options] [-- untouched arguments]
    -r, --runner=RUNNER              Use the given RUNNER.
                                     (c[onsole], e[macs], x[ml])
        --collector=COLLECTOR        Use the given COLLECTOR.
                                     (de[scendant], di[r], l[oad], o[bject]_space)
    -n, --name=NAME                  Runs tests matching NAME.
                                     Use '/PATTERN/' for NAME to use regular expression.
                                     Regular expression accepts options.
                                     Example: '/taRget/i' matches 'target' and 'TARGET'
        --ignore-name=NAME           Ignores tests matching NAME.
                                     Use '/PATTERN/' for NAME to use regular expression.
                                     Regular expression accepts options.
                                     Example: '/taRget/i' matches 'target' and 'TARGET'
    -t, --testcase=TESTCASE          Runs tests in TestCases matching TESTCASE.
                                     Use '/PATTERN/' for TESTCASE to use regular expression.
                                     Regular expression accepts options.
                                     Example: '/taRget/i' matches 'target' and 'TARGET'
        --ignore-testcase=TESTCASE   Ignores tests in TestCases matching TESTCASE.
                                     Use '/PATTERN/' for TESTCASE to use regular expression.
                                     Regular expression accepts options.
                                     Example: '/taRget/i' matches 'target' and 'TARGET'
        --location=LOCATION          Runs tests that defined in LOCATION.
                                     LOCATION is one of PATH:LINE, PATH or LINE.
        --attribute=EXPRESSION       Runs tests that matches EXPRESSION.
                                     EXPRESSION is evaluated as Ruby's expression.
                                     Test attribute name can be used with no receiver in EXPRESSION.
                                     EXPRESSION examples:
                                       !slow
                                       tag == 'important' and !slow
        --[no-]priority-mode         Runs some tests based on their priority.
        --default-priority=PRIORITY  Uses PRIORITY as default priority
                                     (h[igh], i[mportant], l[ow], m[ust], ne[ver], no[rmal])
    -I, --load-path=DIR[:DIR...]     Appends directory list to $LOAD_PATH.
        --color-scheme=SCHEME        Use SCHEME as color scheme.
                                     (d[efault])
        --config=FILE                Use YAML format FILE content as configuration file.
        --order=ORDER                Run tests in a test case in ORDER order.
                                     (a[lphabetic], d[efined], r[andom])
        --max-diff-target-string-size=SIZE
                                     Shows diff if both expected result string size and actual result string size are less than or equal SIZE in bytes.
                                     (1000)
        --[no-]stop-on-failure       Stops immediately on the first non success test
                                     (false)
        --[no-]debug-on-failure      Run debugger if available on failure
                                     (false)
        --[no-]gc-stress             Enable GC.stress only while each test is running
                                     (false)
        --[no-]parallel=[thread]     Runs tests in parallel
                                     (thread)
        --n-workers=N                The number of parallelism
                                     (16)
    -v, --verbose=[LEVEL]            Set the output level (default is normal).
                                     (i[mportant-only], n[ormal], p[rogress], s[ilent], v[erbose])
        --[no-]use-color=[auto]      Uses color output
                                     (default is auto)
        --progress-row-max=MAX       Uses MAX as max terminal width for progress mark
                                     (default is auto)
        --progress-style=STYLE       Uses STYLE as progress style
                                     (f[ault-only], i[nplace], m[ark])
        --no-show-detail-immediately Shows not passed test details immediately.
                                     (default is yes)
        --[no-]reverse-output        Shows fault details in reverse.
                                     (default is yes for tty output, no otherwise)
        --[no-]report-slow-tests     Shows the top 5 slow tests in the summary output
                                     (false)
        --output-file-descriptor=FD  Outputs to file descriptor FD
        --                           Stop processing options so that the
                                     remaining options will be passed to the
                                     test.
    -h, --help                       Display this help.

Deprecated options:
        --console                    Console runner (use --runner).

Before the commit, it works well

$ ruby -r test/unit -e'p ARGV; require "test/unit"; class T < Test::Unit::TestCase; def test_x = nil; end ' -- -v
["-v"]
Loaded suite -e
Started
T:
  test_x:                                                                                                                                                               .: (0.000063)

Finished in 0.000255347 seconds.

[Watson1978]

@nobu Can you look this issue? Thanks.