ruby
diff --git a/‎lib/optparse.rb
Lines changed: 3 additions & 3 deletions b/‎lib/optparse.rb
Lines changed: 3 additions & 3 deletions
diff --git a/‎test/optparse/test_placearg.rb
Lines changed: 6 additions & 0 deletions b/‎test/optparse/test_placearg.rb
Lines changed: 6 additions & 0 deletions
@@ -765,15 +765,15 @@ def pretty_head           # :nodoc:
     end
 
     #
-    # Switch that takes an argument, which does not begin with '-'.
+    # Switch that takes an argument, which does not begin with '-' or is '-'.
     #
     class PlacedArgument < self
 
       #
-      # Returns nil if argument is not present or begins with '-'.
+      # Returns nil if argument is not present or begins with '-' and is not '-'.
       #
       def parse(arg, argv, &error)
-        if !(val = arg) and (argv.empty? or /\A-/ =~ (val = argv[0]))
+        if !(val = arg) and (argv.empty? or /\A-./ =~ (val = argv[0]))
           return nil, block, nil
         end
         opt = (val = parse_arg(val, &error))[1]
 
@@ -18,6 +18,8 @@ def setup
   def test_short
     assert_equal(%w"", no_error {@opt.parse!(%w"-x -n")})
     assert_equal(nil, @flag)
+    assert_equal(%w"", no_error {@opt.parse!(%w"-x -")})
+    assert_equal("-", @flag)
     @flag = false
     assert_equal(%w"", no_error {@opt.parse!(%w"-x foo")})
     assert_equal("foo", @flag)
@@ -30,6 +32,8 @@ def test_short
   def test_abbrev
     assert_equal(%w"", no_error {@opt.parse!(%w"-o -n")})
     assert_equal(nil, @flag)
+    assert_equal(%w"", no_error {@opt.parse!(%w"-o -")})
+    assert_equal("-", @flag)
     @flag = false
     assert_equal(%w"", no_error {@opt.parse!(%w"-o foo")})
     assert_equal("foo", @flag)
@@ -42,6 +46,8 @@ def test_abbrev
   def test_long
     assert_equal(%w"", no_error {@opt.parse!(%w"--opt -n")})
     assert_equal(nil, @flag)
+    assert_equal(%w"", no_error {@opt.parse!(%w"--opt -")})
+    assert_equal("-", @flag)
     assert_equal(%w"foo", no_error {@opt.parse!(%w"--opt= foo")})
     assert_equal("", @flag)
     assert_equal(%w"", no_error {@opt.parse!(%w"--opt=foo")})
Original file line number	Diff line number	Diff line change
`@@ -765,15 +765,15 @@ def pretty_head # :nodoc:`
`765`	`765`	`end`
`766`	`766`
`767`	`767`	`#`
`768`		`- # Switch that takes an argument, which does not begin with '-'.`
	`768`	`+ # Switch that takes an argument, which does not begin with '-' or is '-'.`
`769`	`769`	`#`
`770`	`770`	`class PlacedArgument < self`
`771`	`771`
`772`	`772`	`#`
`773`		`- # Returns nil if argument is not present or begins with '-'.`
	`773`	`+ # Returns nil if argument is not present or begins with '-' and is not '-'.`
`774`	`774`	`#`
`775`	`775`	`def parse(arg, argv, &error)`
`776`		`- if !(val = arg) and (argv.empty? or /\A-/ =~ (val = argv[0]))`
	`776`	`+ if !(val = arg) and (argv.empty? or /\A-./ =~ (val = argv[0]))`
`777`	`777`	`return nil, block, nil`
`778`	`778`	`end`
`779`	`779`	`opt = (val = parse_arg(val, &error))[1]`