enumerator.c: make arith_seq_first support nil begin
enumerator.c: (arith_seq_first): support nil begin.
test/ruby/test_arithmetic_sequence.rb (test_first): add assertions for beginless and endless arithmetic sequences.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67435 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added by mrkn (Kenta Murata) about 5 years ago
enumerator.c: make arith_seq_first support nil begin
enumerator.c: (arith_seq_first): support nil begin.
test/ruby/test_arithmetic_sequence.rb (test_first): add assertions for
beginless and endless arithmetic sequences.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67435 b2dd03c8-39d4-4d8f-98ff-823fe69b080e