tree 68c77c0d8c0491da9b9fa573919205a4eb5c2f47
parent 105eff9dec51bc4898a74af2854ab71f927a5c3b
author Rich Felker <dalias@aerifal.cx> 1510721225 -0500
committer Rich Felker <dalias@aerifal.cx> 1510721642 -0500

add reverse iconv mappings for JIS-based encodings

these encodings are still commonly used in messaging protocols and
such. the reverse mapping is implemented as a binary search of a list
of the jis 0208 characters in unicode order; the existing forward
table is used to perform the comparison in the search.