Fix StringIndexOutOfBoundsException in CsvUnescaper on lone quote#748
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StringEscapeUtils.unescapeCsv("\"")throwsStringIndexOutOfBoundsException: String index out of range: -1.A single
"passes the "is this a quoted value" check becausecharAt(0)andcharAt(length - 1)read the same character, soCsvUnescaper.translateWholestrips quotes withsubSequence(1, length - 1)=subSequence(1, 0). Require length >= 2 so a lone quote falls through unchanged like other unquoted input.