MirrorString("1234")

Line 6 in a7/vstring1.rb:
s.size = '8'
s[0] = '"1"'
s[1] = '"2"'
s[2] = '"3"'
s[3] = '"4"'


Line 7 in a7/vstring1.rb:
s.size = '8'
s[-1] = '"1"'
s[-2] = '"2"'
s[-3] = '"3"'
s[-4] = '"4"'


Line 9 in a7/vstring1.rb:
Forwards in dump_string(MirrorString("1234"),8)
'1'
'12'
'123'
'1234'
'12344'
'123443'
'1234432'
'12344321'
Backwards in dump_string(MirrorString("1234"),8)
'1'
'21'
'321'
'4321'
'44321'
'344321'
'2344321'
'12344321'
Middle on MirrorString("1234")
s[-1] = "1"
s[0] = "1"
s[1] = "2"
s[2] = "3"
s[3] = "4"
s[4] = "4"
s[5] = "3"
s[6] = "2"
s[7] = "1"
s[8] = nil
s[9] = nil
Underrun on MirrorString("1234")
s[-5] = "4"
s[-4] = "4"
s[-3] = "3"
s[-2] = "2"
s[-1] = "1"
s[0] = "1"
s[1] = "2"
s[2] = "3"
s[3] = "4"
s[4] = "4"
s[5] = "3"
Overrun on MirrorString("1234")
s[3] = "4"
s[4] = "4"
s[5] = "3"
s[6] = "2"
s[7] = "1"
s[8] = nil
s[9] = nil
s[10] = nil
s[11] = nil
s[12] = nil
s[13] = nil