Handle equals character for non-option valuespedantic-equals

If the string includes an equals char but doesn't look like it's a
possible candidate for a flag=value, we should ignore it

see #226

2 files changed, 7 insertions, 2 deletions

diff --git a/lib/slop/parser.rb b/lib/slop/parser.rb
index 463e75a..27e1c50 100644
--- a/lib/slop/parser.rb
+++ b/lib/slop/parser.rb
@@ -53,8 +53,8 @@ module Slop
         # support `foo=bar`
         orig_flag = flag.dup
         orig_arg = arg
-        if flag.include?("=")
-          flag, arg = flag.split("=")
+        if match = flag.match(/([^=]+)=([^=]+)/)
+          flag, arg = match.captures
         end
 
         if opt = try_process(flag, arg)
diff --git a/test/parser_test.rb b/test/parser_test.rb
index dcc3661..caee0dd 100644
--- a/test/parser_test.rb
+++ b/test/parser_test.rb
@@ -21,6 +21,11 @@ describe Slop::Parser do
     @result.parser.parse %w(--name=bob -p=123)
     assert_equal "bob", @result[:name]
     assert_equal 123, @result[:port]
+
+    @options.string "--foo"
+    @result.parser.parse %w(--foo = =)
+    assert_equal "=", @result[:foo]
+    assert_equal %w(=), @result.args
   end
 
   it "parses arg with leading -" do