abc אבג xyz דהו def
אבג xyz דהו def זחט
אבג דהו אבג
abc efd dabeb
Lorem ipsum dolor sit amet
Lorem ipsum dolor sit amet
Lorem ipsum dolor sit amet
Lorem ipsum dolor sit amet
Lorem
ipsum dolor sit
amett
Lorem ipsum dolor sit amet
Lorem ipsum dolor
just a test
sit amet
Lorem ipsum dolor sit amet
Lorem
ipsum dolor sit
amet
Just testing רק בודק
Just testing what ever
car means אבג.
car דהו אבג.
he said " car דהו אבג ."
זחט יךכ לםמ ' he said " car דהו אבג " '?
אבג abc דהו
edf זחט abrebg
abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg
abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg


Extending by character
Test 1, LTR:
  Extending right: "\nabc ABC xyz DEF def\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending left:  "\nabc ABC xyz DEF def\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nabc ABC xyz DEF def\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending backward:  "\nabc ABC xyz DEF def\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
Test 1, RTL:
  Extending left: "\nabc ABC xyz DEF def\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending right:  "\nabc ABC xyz DEF def\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nabc ABC xyz DEF def\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending backward: "\nabc ABC xyz DEF def\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 2, LTR:
  Extending right: "\nABC xyz DEF def GHI\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending left:  "\nABC xyz DEF def GHI\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nABC xyz DEF def GHI\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending backward:  "\nABC xyz DEF def GHI\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
Test 2, RTL:
  Extending left: "\nABC xyz DEF def GHI\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending right:  "\nABC xyz DEF def GHI\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nABC xyz DEF def GHI\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14), (1,15), (1,16), (1,17), (1,18), (1,19), (1,20)]
  Extending backward: "\nABC xyz DEF def GHI\n"[(1,20), (1,19), (1,18), (1,17), (1,16), (1,15), (1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 3, LTR:
  Extending right: "\nABC DEF ABC\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12)]
  Extending left:  "\nABC DEF ABC\n"[(1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nABC DEF ABC\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12)]
  Extending backward:  "\nABC DEF ABC\n"[(1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
Test 3, RTL:
  Extending left: "\nABC DEF ABC\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12)]
  Extending right:  "\nABC DEF ABC\n"[(1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nABC DEF ABC\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12)]
  Extending backward: "\nABC DEF ABC\n"[(1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 4, LTR:
  Extending right: "\nabc efd dabeb\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14)]
  Extending left:  "\nabc efd dabeb\n"[(1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nabc efd dabeb\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14)]
  Extending backward:  "\nabc efd dabeb\n"[(1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
Test 4, RTL:
  Extending left: "\nabc efd dabeb\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14)]
  Extending right:  "\nabc efd dabeb\n"[(1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]
  Extending forward: "\nabc efd dabeb\n"[(1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13), (1,14)]
  Extending backward: "\nabc efd dabeb\n"[(1,14), (1,13), (1,12), (1,11), (1,10), (1,9), (1,8), (1,7), (1,6), (1,5), (1,4), (1,3), (1,2), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 5, LTR:
  Extending right: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending left:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
Test 5, RTL:
  Extending left: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending right:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward: " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 6, LTR:
  Extending right: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending left:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
Test 6, RTL:
  Extending left: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending right:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward: " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 7, LTR:
  Extending right: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending left:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
Test 7, RTL:
  Extending left: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending right:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward: " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 8, LTR:
  Extending right: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending left:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
Test 8, RTL:
  Extending left: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending right:  " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6)], "ipsum dolor sit"[(0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amet"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending backward: " amet"[(0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "Lorem "[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Extending by word
Test 1, LTR:
  Extending right: "\nabc ABC xyz DEF def\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending left:  "\nabc ABC xyz DEF def\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]
  Extending forward: "\nabc ABC xyz DEF def\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending backward:  "\nabc ABC xyz DEF def\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]
Test 1, RTL:
  Extending left: "\nabc ABC xyz DEF def\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending right:  "\nabc ABC xyz DEF def\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]
  Extending forward: "\nabc ABC xyz DEF def\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending backward: "\nabc ABC xyz DEF def\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 2, LTR:
  Extending right: "\nABC xyz DEF def GHI\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending left:  "\nABC xyz DEF def GHI\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]
  Extending forward: "\nABC xyz DEF def GHI\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending backward:  "\nABC xyz DEF def GHI\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]
Test 2, RTL:
  Extending left: "\nABC xyz DEF def GHI\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending right:  "\nABC xyz DEF def GHI\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]
  Extending forward: "\nABC xyz DEF def GHI\n"[(1,1), (1,4), (1,8), (1,12), (1,16), (1,20)]
  Extending backward: "\nABC xyz DEF def GHI\n"[(1,20), (1,17), (1,13), (1,9), (1,5), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 3, LTR:
  Extending right: "\nABC DEF ABC\n"[(1,1), (1,4), (1,8), (1,12)]
  Extending left:  "\nABC DEF ABC\n"[(1,12), (1,9), (1,5), (1,1)]
  Extending forward: "\nABC DEF ABC\n"[(1,1), (1,4), (1,8), (1,12)]
  Extending backward:  "\nABC DEF ABC\n"[(1,12), (1,9), (1,5), (1,1)]
Test 3, RTL:
  Extending left: "\nABC DEF ABC\n"[(1,1), (1,4), (1,8), (1,12)]
  Extending right:  "\nABC DEF ABC\n"[(1,12), (1,9), (1,5), (1,1)]
  Extending forward: "\nABC DEF ABC\n"[(1,1), (1,4), (1,8), (1,12)]
  Extending backward: "\nABC DEF ABC\n"[(1,12), (1,9), (1,5), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 4, LTR:
  Extending right: "\nabc efd dabeb\n"[(1,1), (1,4), (1,8), (1,14)]
  Extending left:  "\nabc efd dabeb\n"[(1,14), (1,9), (1,5), (1,1)]
  Extending forward: "\nabc efd dabeb\n"[(1,1), (1,4), (1,8), (1,14)]
  Extending backward:  "\nabc efd dabeb\n"[(1,14), (1,9), (1,5), (1,1)]
Test 4, RTL:
  Extending left: "\nabc efd dabeb\n"[(1,1), (1,4), (1,8), (1,14)]
  Extending right:  "\nabc efd dabeb\n"[(1,14), (1,9), (1,5), (1,1)]
  Extending forward: "\nabc efd dabeb\n"[(1,1), (1,4), (1,8), (1,14)]
  Extending backward: "\nabc efd dabeb\n"[(1,14), (1,9), (1,5), (1,1)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 5, LTR:
  Extending right: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending left:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
Test 5, RTL:
  Extending left: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending right:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward: " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 6, LTR:
  Extending right: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending left:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
Test 6, RTL:
  Extending left: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending right:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward: " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 7, LTR:
  Extending right: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending left:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
Test 7, RTL:
  Extending left: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending right:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward: " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Test 8, LTR:
  Extending right: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending left:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
Test 8, RTL:
  Extending left: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending right:  " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]
  Extending forward: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amet"[(0,5)]
  Extending backward: " amet"[(0,5), (0,1)], "ipsum dolor sit"[(0,12), (0,6)], "Lorem "[(0,6), (0,0)]


  validating ltrRight and ltrLeft
  validating ltrRight and ltrForward
  validating ltrForward and rtlForward
  validating ltrLeft and ltrBackward
  validating ltrBackward and rtlBackward
  validating ltrRight and rtlLeft
  validating ltrLeft and rtlRight


Extending by character
Test 1, LTR:
  Extending right: "Lorem "[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5)], "ipsum dolor sit"[(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13), (0,14), (0,15)], " amett"[(0,1), (0,2), (0,3), (0,4), (0,5)]
  Extending left:  " amett"[(0,6), (0,5), (0,4), (0,3), (0,2), (0,1)], "ipsum dolor sit"[(0,15), (0,14), (0,13), (0,12), (0,11), (0,10), (0,9), (0,8), (0,7), (0,6), (0,5), (0,4), (0,3), (0,2), (0,1), (0,0)], "Lorem "[(0,5), (0,4), (0,3), (0,2), (0,1)]


Extending by word
Test 1, LTR:
  Extending right: "Lorem "[(0,0), (0,5)], "ipsum dolor sit"[(0,5), (0,11), (0,15)], " amett"[(0,6), (0,1)]
  Extending left:  " amett"[(0,6), (0,1)], "ipsum dolor sit"[(0,12), (0,6), (0,0)], "Lorem "[(0,0), (0,5)]


Extending by lineBoundary
Test 1, LTR:
  Extending forward: "\nabc ABC xyz DEF def\n"[(1,1), (1,20)]
  Extending backward:  "\nabc ABC xyz DEF def\n"[(1,20), (1,1)]
Test 1, RTL:
  Extending forward: "\nabc ABC xyz DEF def\n"[(1,1), (1,20)]
  Extending backward:  "\nabc ABC xyz DEF def\n"[(1,20), (1,1)]
Test 2, LTR:
  Extending forward: "\nABC xyz DEF def GHI\n"[(1,1), (1,20)]
  Extending backward:  "\nABC xyz DEF def GHI\n"[(1,20), (1,1)]
Test 2, RTL:
  Extending forward: "\nABC xyz DEF def GHI\n"[(1,1), (1,20)]
  Extending backward:  "\nABC xyz DEF def GHI\n"[(1,20), (1,1)]
Test 3, LTR:
  Extending forward: "\nABC DEF ABC\n"[(1,1), (1,12)]
  Extending backward:  "\nABC DEF ABC\n"[(1,12), (1,1)]
Test 3, RTL:
  Extending forward: "\nABC DEF ABC\n"[(1,1), (1,12)]
  Extending backward:  "\nABC DEF ABC\n"[(1,12), (1,1)]
Test 4, LTR:
  Extending forward: "\nabc efd dabeb\n"[(1,1), (1,14)]
  Extending backward:  "\nabc efd dabeb\n"[(1,14), (1,1)]
Test 4, RTL:
  Extending forward: "\nabc efd dabeb\n"[(1,1), (1,14)]
  Extending backward:  "\nabc efd dabeb\n"[(1,14), (1,1)]
Test 5, LTR:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 5, RTL:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 6, LTR:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 6, RTL:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 7, LTR:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 7, RTL:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 8, LTR:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 8, RTL:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 9, LTR:
  Extending forward: "Lorem "[(0,0), (0,5)]
  Extending backward:  "Lorem "[(0,5), (0,0)]
Test 9, RTL:
  Extending forward: "Lorem "[(0,0), (0,5)]
  Extending backward:  "Lorem "[(0,5), (0,0)]
Test 10, LTR:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 10, RTL:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 11, LTR:
  Extending forward: "Lorem "[(0,0)], "ipsum dolor"[(0,11)]
  Extending backward:  "ipsum dolor"[(0,11)], "Lorem "[(0,0)]
Test 11, RTL:
  Extending forward: "Lorem "[(0,0)], "ipsum dolor"[(0,11)]
  Extending backward:  "ipsum dolor"[(0,11)], "Lorem "[(0,0)]
Test 12, LTR:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 12, RTL:
  Extending forward: "Lorem "[(0,0)], " amet"[(0,5)]
  Extending backward:  " amet"[(0,5)], "Lorem "[(0,0)]
Test 13, LTR:
  Extending forward: "Lorem "[(0,0), (0,5)]
  Extending backward:  "Lorem "[(0,5), (0,0)]
Test 13, RTL:
  Extending forward: "Lorem "[(0,0), (0,5)]
  Extending backward:  "Lorem "[(0,5), (0,0)]
Test 14, LTR:
  Extending forward: "\n Just\n "[(2,2)], "\n BFDX\n"[(2,6)]
  Extending backward:  "\n BFDX\n"[(2,6)], "\n Just\n "[(2,2)]
Test 14, RTL:
  Extending forward: "\n Just\n "[(2,2)], "\n BFDX\n"[(2,6)]
  Extending backward:  "\n BFDX\n"[(2,6)], "\n Just\n "[(2,2)]
Test 15, LTR:
  Extending forward: "\n Just\n "[(2,2)], "\n ever\n"[(2,6)]
  Extending backward:  "\n ever\n"[(2,6)], "\n Just\n "[(2,2)]
Test 15, RTL:
  Extending forward: "\n Just\n "[(2,2)], "\n ever\n"[(2,6)]
  Extending backward:  "\n ever\n"[(2,6)], "\n Just\n "[(2,2)]
Test 16, LTR:
  Extending forward: "car means ABC."[(0,0), (0,14)]
  Extending backward:  "car means ABC."[(0,14), (0,0)]
Test 16, RTL:
  Extending forward: "car means ABC."[(0,0), (0,14)]
  Extending backward:  "car means ABC."[(0,14), (0,0)]
Test 17, LTR:
  Extending forward: "᪜car DEF ABC.᪝"[(1,1), (1,13)]
  Extending backward:  "᪜car DEF ABC.᪝"[(1,13), (1,1)]
Test 17, RTL:
  Extending forward: "᪜car DEF ABC.᪝"[(1,1), (1,13)]
  Extending backward:  "᪜car DEF ABC.᪝"[(1,13), (1,1)]
Test 18, LTR:
  Extending forward: "he said "᪜car DEF ABC᪝.""[(0,0), (0,24)]
  Extending backward:  "he said "᪜car DEF ABC᪝.""[(0,24), (0,0)]
Test 18, RTL:
  Extending forward: "he said "᪜car DEF ABC᪝.""[(0,0), (0,24)]
  Extending backward:  "he said "᪜car DEF ABC᪝.""[(0,24), (0,0)]
Test 19, LTR:
  Extending forward: "GHI JKL MNO '᪛he said "᪜car DEF ABC᪝"᪝'?"[(0,0), (0,40)]
  Extending backward:  "GHI JKL MNO '᪛he said "᪜car DEF ABC᪝"᪝'?"[(0,40), (0,0)]
Test 19, RTL:
  Extending forward: "GHI JKL MNO '᪛he said "᪜car DEF ABC᪝"᪝'?"[(0,0), (0,40)]
  Extending backward:  "GHI JKL MNO '᪛he said "᪜car DEF ABC᪝"᪝'?"[(0,40), (0,0)]
Test 20, LTR:
  Extending forward: "ABC abc DEF"[(0,0), (0,11)]
  Extending backward:  "ABC abc DEF"[(0,11), (0,0)]
Test 20, RTL:
  Extending forward: "ABC abc DEF"[(0,0), (0,11)]
  Extending backward:  "ABC abc DEF"[(0,11), (0,0)]
Test 21, LTR:
  Extending forward: "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,0), (0,8), (0,16), (0,26), (0,34), (0,42), (0,50), (0,58), (0,66), (0,74), (0,82), (0,90), (0,98), (0,105)]
  Extending backward:  "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,105), (0,0)]
Test 21, RTL:
  Extending forward: "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,0), (0,7)]
  Extending backward:  "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,7), (0,0)]
Test 22, LTR:
  Extending forward: "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,0), (0,8), (0,16), (0,26), (0,34), (0,42), (0,50), (0,58), (0,66), (0,74), (0,82), (0,90), (0,98), (0,105)]
  Extending backward:  "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,105), (0,0)]
Test 22, RTL:
  Extending forward: "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,0), (0,7)]
  Extending backward:  "abcdefg abcdefg abcdefg a abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg "[(0,7), (0,0)]