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# ANSI::Diff
require 'ansi/diff'
a = 'abcYefg'
b = 'abcXefg'
diff = ANSI::Diff.new(a,b)
diff.to_s.assert == "\e[31mabc\e[0m\e[33mYefg\e[0m\n\e[31mabc\e[0mXefg"
Try another.
a = 'abc'
b = 'abcdef'
diff = ANSI::Diff.new(a,b)
diff.to_s.assert == "\e[31mabc\e[0m\n\e[31mabc\e[0mdef"
And another.
a = 'abcXXXghi'
b = 'abcdefghi'
diff = ANSI::Diff.new(a,b)
diff.to_s.assert == "\e[31mabc\e[0m\e[33mXXXghi\e[0m\n\e[31mabc\e[0mdefghi"
And another.
a = 'abcXXXdefghi'
b = 'abcdefghi'
diff = ANSI::Diff.new(a,b)
diff.to_s.assert == "\e[31mabc\e[0m\e[33mXXX\e[0m\e[35mdefghi\e[0m\n\e[31mabc\e[0m\e[35mdefghi\e[0m"
Comparison that is mostly different.
a = 'abcpppz123'
b = 'abcxyzzz43'
diff = ANSI::Diff.new(a,b)
diff.to_s.assert == "\e[31mabc\e[0m\e[33mpppz123\e[0m\n\e[31mabc\e[0mxyzzz43"
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