Allow control character to be used as an component separator (GH-189)

lib/stupidedi/reader/stream_reader.rb

@@ -85,14 +85,14 @@ def read_segment
             # it is not terminated by an element separator. The {read_character}
             # method defined by TokenReader skips past control characters.
             remaining.flatmap do |w|
-              w.read_character.flatmap do |isa16, cR|
+              w.stream.read_character.flatmap do |isa16, cR|
                 elements << SimpleElementTok.build(isa16, w.input, cR.input)
 
                 # The character after the last element is defined to be the
                 # segment terminator. The {read_character} method here, defined
                 # by StreamReader, does not skip past control character, so the
                 # separator could be a control character.
-                cR.stream.read_character.flatmap do |char_, dR|
+                cR.read_character.flatmap do |char_, dR|
                   if char_ == separators.element
                     failure("element separator and segment terminator must be distinct", dR.input)
                   else

spec/fixtures/004010/QM214/pass/gh-189.edi

@@ -0,0 +1,6 @@
+ISA00          00          ZZ0607047800010GBZZBLIT_T         1905072217U004010000008931T
+GSQMFEDEXBLIT201905072217914X004010
+ST21460810001
+SE1960810001
+GE1914
+IEA1000000893

spec/lib/stupidedi/parser/builder_dsl_spec.rb

@@ -1416,7 +1416,7 @@ def config(details, version = "005010")
       end
     end
 
-    fcontext "composite" do
+    context "composite" do
       context "when element is missing" do
         let(:b) do
           strict(Detail("2", Segment(10, COS(), s_mandatory, bounded(1))))