From: Jane Liu (email@example.com)
Date: Wed May 28 2003 - 15:36:39 EDT
I am running a JAVA program on Japanese Windows 2000 system, looking
at the Unicode conversion of the following four characters from
Shift-JIS encoding (MS-CP932) in both JRE 1.3.1 and JRE 1.4.1, and
noticed some interesting changes:
In JRE 1.3.1, it converts them just same as what Microsoft does:
0x815C (―) -> U+2015 (―) Horizontal Bar
0x8160 (～) -> U+FF5E (～) Full-width Tilde
0x8161 (∥) -> U+2225 (∥) Parallel To
0x817C (－) -> U+FF0D (－) Full-width Hyphen
In JRE 1.4.1, it converts them just same as what ICU does:
0x815C (―) -> U+2014 (—) EM Dash
0x8160 (～) -> U+301C (〜) Wave Dash
0x8161 (∥) -> U+2016 (‖) Double Vertical Line
0x817C (－) -> U+2212 (−) Minus Sign
Obviously, this cause some backward compatibility & forward migration
issues here. I have the exactly same program. Those four Japanese
characters used to work perfectly when we use the older JRE version
1.3.1. However, now we move up to JRE 1.4.1, three of the four
charcters are displayed differently, and one which is the "Double
vertical line" becomes a dot on the UI because U+2016 is not defined
in Japanese TrueType font "MS Gothic".
Can someone help please? Why SUN made such changes? To me, it's hard
to believe this is just a mistake in the new mapping table, if SUN
does have some good reasons, they may also require some code changes,
would this be true? Where and how should I change my code?
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