MirrorString("abc")

Line 95 in a7/vstring1.rb:
Forwards in dump_string(MirrorString("abc"),6)
'a'
'ab'
'abc'
'abcc'
'abccb'
'abccba'
Backwards in dump_string(MirrorString("abc"),6)
'a'
'ba'
'cba'
'ccba'
'bccba'
'abccba'
Middle on MirrorString("abc")
s[-2] = "b"
s[-1] = "a"
s[0] = "a"
s[1] = "b"
s[2] = "c"
s[3] = "c"
s[4] = "b"
s[5] = "a"
s[6] = nil
s[7] = nil
s[8] = nil
Underrun on MirrorString("abc")
s[-5] = "b"
s[-4] = "c"
s[-3] = "c"
s[-2] = "b"
s[-1] = "a"
s[0] = "a"
s[1] = "b"
s[2] = "c"
s[3] = "c"
s[4] = "b"
s[5] = "a"
Overrun on MirrorString("abc")
s[1] = "b"
s[2] = "c"
s[3] = "c"
s[4] = "b"
s[5] = "a"
s[6] = nil
s[7] = nil
s[8] = nil
s[9] = nil
s[10] = nil
s[11] = nil
ReplString(MirrorString("abc"),2)

Line 98 in a7/vstring1.rb:
Forwards in dump_string(ReplString(MirrorString("abc"),2),12)
'a'
'ab'
'abc'
'abcc'
'abccb'
'abccba'
'abccbaa'
'abccbaab'
'abccbaabc'
'abccbaabcc'
'abccbaabccb'
'abccbaabccba'
Backwards in dump_string(ReplString(MirrorString("abc"),2),12)
'a'
'ba'
'cba'
'ccba'
'bccba'
'abccba'
'aabccba'
'baabccba'
'cbaabccba'
'ccbaabccba'
'bccbaabccba'
'abccbaabccba'
Middle on ReplString(MirrorString("abc"),2)
s[1] = "b"
s[2] = "c"
s[3] = "c"
s[4] = "b"
s[5] = "a"
s[6] = "a"
s[7] = "b"
s[8] = "c"
s[9] = "c"
s[10] = "b"
s[11] = "a"
Underrun on ReplString(MirrorString("abc"),2)
s[-5] = "b"
s[-4] = "c"
s[-3] = "c"
s[-2] = "b"
s[-1] = "a"
s[0] = "a"
s[1] = "b"
s[2] = "c"
s[3] = "c"
s[4] = "b"
s[5] = "a"
Overrun on ReplString(MirrorString("abc"),2)
s[7] = "b"
s[8] = "c"
s[9] = "c"
s[10] = "b"
s[11] = "a"
s[12] = nil
s[13] = nil
s[14] = nil
s[15] = nil
s[16] = nil
s[17] = nil
ReplString("abcdefg",1)

Line 101 in a7/vstring1.rb:
Forwards in dump_string(ReplString("abcdefg",1),7)
'a'
'ab'
'abc'
'abcd'
'abcde'
'abcdef'
'abcdefg'
Backwards in dump_string(ReplString("abcdefg",1),7)
'g'
'fg'
'efg'
'defg'
'cdefg'
'bcdefg'
'abcdefg'
Middle on ReplString("abcdefg",1)
s[-2] = "f"
s[-1] = "g"
s[0] = "a"
s[1] = "b"
s[2] = "c"
s[3] = "d"
s[4] = "e"
s[5] = "f"
s[6] = "g"
s[7] = nil
s[8] = nil
Underrun on ReplString("abcdefg",1)
s[-5] = "c"
s[-4] = "d"
s[-3] = "e"
s[-2] = "f"
s[-1] = "g"
s[0] = "a"
s[1] = "b"
s[2] = "c"
s[3] = "d"
s[4] = "e"
s[5] = "f"
Overrun on ReplString("abcdefg",1)
s[2] = "c"
s[3] = "d"
s[4] = "e"
s[5] = "f"
s[6] = "g"
s[7] = nil
s[8] = nil
s[9] = nil
s[10] = nil
s[11] = nil
s[12] = nil
MirrorString(ReplString("abcdefg",1))

Line 104 in a7/vstring1.rb:
Forwards in dump_string(MirrorString(ReplString("abcdefg",1)),14)
'a'
'ab'
'abc'
'abcd'
'abcde'
'abcdef'
'abcdefg'
'abcdefgg'
'abcdefggf'
'abcdefggfe'
'abcdefggfed'
'abcdefggfedc'
'abcdefggfedcb'
'abcdefggfedcba'
Backwards in dump_string(MirrorString(ReplString("abcdefg",1)),14)
'a'
'ba'
'cba'
'dcba'
'edcba'
'fedcba'
'gfedcba'
'ggfedcba'
'fggfedcba'
'efggfedcba'
'defggfedcba'
'cdefggfedcba'
'bcdefggfedcba'
'abcdefggfedcba'
Middle on MirrorString(ReplString("abcdefg",1))
s[2] = "c"
s[3] = "d"
s[4] = "e"
s[5] = "f"
s[6] = "g"
s[7] = "g"
s[8] = "f"
s[9] = "e"
s[10] = "d"
s[11] = "c"
s[12] = "b"
Underrun on MirrorString(ReplString("abcdefg",1))
s[-5] = "e"
s[-4] = "d"
s[-3] = "c"
s[-2] = "b"
s[-1] = "a"
s[0] = "a"
s[1] = "b"
s[2] = "c"
s[3] = "d"
s[4] = "e"
s[5] = "f"
Overrun on MirrorString(ReplString("abcdefg",1))
s[9] = "e"
s[10] = "d"
s[11] = "c"
s[12] = "b"
s[13] = "a"
s[14] = nil
s[15] = nil
s[16] = nil
s[17] = nil
s[18] = nil
s[19] = nil

Line 106 in a7/vstring1.rb:
s6 = 'MirrorString(ReplString("abcdefg",1))'