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2486bis issue: upper/lowercase hex

From the I-D tracker: 
Curtesy of Henrik Levkowetz <henrik@levkowetz.com>

RFC2234 defines

        num-val        =  "%" (bin-val / dec-val / hex-val)
        hex-val        =  "x" 1*HEXDIG
                          [ 1*("." 1*HEXDIG) / ("-" 1*HEXDIG) ]
        HEXDIG        =  DIGIT / "A" / "B" / "C" / "D" / "E" / "F"


2486bis uses both the lower-case form (e.g, %xff) and the upper-case form
(e.g., %xFF); the former is not according to RFC2234 (which doesn't really
bother me that much), but mixing the lower-case form and the upper-case form
makes me wonder whether there is some significance in the use of lower-case
vs. upper-case.


Lower case is wrong. Fixed. Thanks for noticing this.

--Jari

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