- From: Uma Umamaheswaran <umavs@ca.ibm.com>
- Date: Tue, 25 Mar 2008 14:48:38 -0400
- To: www-international@w3.org
Another point you may want to keep in mind as background ... When one takes EBCDIC based (for ex: IBM 037) Latin-1 sets and when one maps to 8859-1 for G sets (no loss) and C0 and C1 spaces for preserving the EBCDIC controls ... one of these being NEL .. while flowing through IETF / MIME networks and back into EBCDIC based systems .. it provides a nice pass through capability for the corresponding number of control code positions. While this is possible in a more or less transparent manner with so called ISO-8bit encodings, one cannot do so with Windows(such as cp125x) or (PC DOS such as cp850) based encodings without overlaying the controls into the C1 space graphics or mapping the equivalents of C1 controls into/out of sort of two byte sequences !! I know the world at large may not want to hear anything about EBCDIC !!! One of the motivations for the C1 default in Unicode was just to leave these alone as defaults from ISO 6429 to allow some level of pass through capability with EBCDIC encoded data as well. >From structure point of view windows 12xx, IBM PC DOS etc. could be considered as modified ISO-8 structure (a la 4873 level 1), in the sense that it has a C0, G0 and 128 slots G1 !! Best regards, Uma
Received on Tuesday, 25 March 2008 18:49:25 UTC