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Full Discussion: Perl script backspace not working for Unicode characters
Top Forums Shell Programming and Scripting Perl script backspace not working for Unicode characters Post 302500855 by tdw on Tuesday 1st of March 2011 07:30:50 PM
Old 03-01-2011
Thank you very much for the pointers. I followed tips from 2nd link and added the line in my script:

system('stty iutf8');

It worked but not completely. Normal width characters worked fine, like אזחט. But wide characters like Chinese, one BACKSPACE erased all bytes correctly (3 bytes per char), but cursor moved back only one term cell instead of two cells for wide chars. The result was that some Chinese characters were still left visible on terminal even after all of the underlying bytes were deleted.
 

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LEARN ABOUT MOJAVE

gb18030

GB18030(5)						      BSD File Formats Manual							GB18030(5)

NAME

     gb18030 -- GB 18030 encoding method for Chinese text

SYNOPSIS

     ENCODING "GB18030"

DESCRIPTION

     The GB18030 encoding implements GB 18030-2000, a PRC national standard for the encoding of Chinese characters.  It is a superset of the older
     GB 2312-1980 and GBK encodings, and incorporates Unicode's Unihan Extension A completely.	It also provides code space for all Unicode 3.0
     code points.

     Multibyte characters in the GB18030 encoding can be one byte, two bytes, or four bytes long.  There are a total of over 1.5 million code
     positions.

     GB 11383-1981 (ASCII) characters are represented by single bytes in the range 0x00 to 0x7F.

     Chinese characters are represented as either two bytes or four bytes.  Characters that are represented by two bytes begin with a byte in the
     range 0x81-0xFE and end with a byte either in the range 0x40-0x7E or 0x80-0xFE.

     Characters that are represented by four bytes begin with a byte in the range 0x81-0xFE, have a second byte in the range 0x30-0x39, a third
     byte in the range 0x81-0xFE and a fourth byte in the range 0x30-0x39.

SEE ALSO

     euc(5), gb2312(5), gbk(5), utf8(5)

     Chinese National Standard GB 18030-2000: Information Technology -- Chinese ideograms coded character set for information interchange --
     Extension for the basic set, March 2000.

     The Unicode Standard, Version 3.0, The Unicode Consortium, 2000.

STANDARDS

     The GB18030 encoding is believed to be compatible with GB 18030-2000.

BSD
								  August 10, 2003							       BSD
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