IspString(MirrorString("abc"),ReplString(".",3))

Line 6 in a7/vstring1.rb:
s.size = '21'
s[0] = '"a"'
s[1] = '"."'
s[2] = '"."'
s[3] = '"."'


Line 7 in a7/vstring1.rb:
s.size = '21'
s[-1] = '"a"'
s[-2] = '"."'
s[-3] = '"."'
s[-4] = '"."'


Line 9 in a7/vstring1.rb:
Forwards in dump_string(IspString(MirrorString("abc"),ReplString(".",3)),21)
'a'
'a.'
'a..'
'a...'
'a...b'
'a...b.'
'a...b..'
'a...b...'
'a...b...c'
'a...b...c.'
'a...b...c..'
'a...b...c...'
'a...b...c...c'
'a...b...c...c.'
'a...b...c...c..'
'a...b...c...c...'
'a...b...c...c...b'
'a...b...c...c...b.'
'a...b...c...c...b..'
'a...b...c...c...b...'
'a...b...c...c...b...a'
Backwards in dump_string(IspString(MirrorString("abc"),ReplString(".",3)),21)
'a'
'.a'
'..a'
'...a'
'b...a'
'.b...a'
'..b...a'
'...b...a'
'c...b...a'
'.c...b...a'
'..c...b...a'
'...c...b...a'
'c...c...b...a'
'.c...c...b...a'
'..c...c...b...a'
'...c...c...b...a'
'b...c...c...b...a'
'.b...c...c...b...a'
'..b...c...c...b...a'
'...b...c...c...b...a'
'a...b...c...c...b...a'
Middle on IspString(MirrorString("abc"),ReplString(".",3))
s[5] = "."
s[6] = "."
s[7] = "."
s[8] = "c"
s[9] = "."
s[10] = "."
s[11] = "."
s[12] = "c"
s[13] = "."
s[14] = "."
s[15] = "."
Underrun on IspString(MirrorString("abc"),ReplString(".",3))
s[-5] = "b"
s[-4] = "."
s[-3] = "."
s[-2] = "."
s[-1] = "a"
s[0] = "a"
s[1] = "."
s[2] = "."
s[3] = "."
s[4] = "b"
s[5] = "."
Overrun on IspString(MirrorString("abc"),ReplString(".",3))
s[16] = "b"
s[17] = "."
s[18] = "."
s[19] = "."
s[20] = "a"
s[21] = nil
s[22] = nil
s[23] = nil
s[24] = nil
s[25] = nil
s[26] = nil