Bug#265187: iconv doesn't preserve \x5c (REVERSE SOLIDUS) from EUC-JP to ISO-2022-JP

[Fumitoshi UKAI <ukai@debian.or.jp>]

Package: libc6
Version: 2.3.2.ds1-15

iconv doesn't preverve \x5c (REVERSE SOLIDUS) from EUC-JP to ISO-2022-JP.

 % printf "\xa4\xa2\x5c\x61\x5c\xa4\xa2\n" | \
	iconv -f EUC-JP -t UTF-8 | iconv -f UTF-8 -t EUC-JP |\
	od -t xC
 0000000 a4 a2 5c 61 5c a4 a2 0a
 0000010
 % printf "\xa4\xa2\x5c\x61\x5c\xa4\xa2\n" | \
	iconv -f EUC-JP -t SJIS |\
	od -t xC
 0000000 82 a0 5c 61 5c 82 a0 0a
 0000010

These are ok, but if converted to ISO-2022-JP, ...

 % printf "\xa4\xa2\x5c\x61\x5c\xa4\xa2\n" | iconv -f EUC-JP -t ISO-2022-JP | od -t xC
 0000000 1b 24 42 24 22 21 40 1b 28 42 61 5c 1b 24 42 24
 0000020 22 1b 28 42 0a
 0000025

So, \x5c (REVERSE SOLIDUS) becomes \x21\x40 in JIS X0208 (FULLWIDTH
REVERSE SOLIDUS)

Regards,
Fumitoshi UKAI