Re: Hexadecimal in many scripts (ISO 14755)

From: James E. Agenbroad (
Date: Fri Jun 04 1999 - 11:13:15 EDT

On Fri, 4 Jun 1999, Markus Kuhn wrote:

> Hexadecimal numbers use the first 6 digits of the Latin alphabet to
> represent digit values 10-15. ISO 14755 specifies a fall-back
> hexadecimal keyboard entry method that allows to enter all Unicode
> characters on any keyboard, and it requires that the first 6 letters
> of whatever alphabet is represented on that keyboard are also accepted
> as hexadecimal digits 10-15.
> I am currently thinking about implementing ISO 14755 for xterm, so I
> wonder what the first 6 letters of each of the alphabets supported by
> xterm are. Unfortunately, the final draft of ISO 14755 that I have
> does not provide any guidance here, and at least for Hangul, I have
> been told by a local native speaker not to use just the first 6
> Unicode positions.
> Here is what I have so far as the first 6 characters of all alphabets
> for which X Windows knows keyboard codes:
> keysym Unicode keysym name UTF-8 Unicode name
> 0x05c7, 0x0627 Arabic_alef ا ARABIC LETTER ALEF
> 0x05c8, 0x0628 Arabic_beh ب ARABIC LETTER BEH
> 0x05c9, 0x0629 Arabic_tehmarbuta ة ARABIC LETTER TEH MARBUTA
> 0x05ca, 0x062a Arabic_teh ت ARABIC LETTER TEH
> 0x05cb, 0x062b Arabic_theh ث ARABIC LETTER THEH
> 0x05cc, 0x062c Arabic_jeem ج ARABIC LETTER JEEM
> Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK
> Email: mkuhn at, WWW: <>
                                                Friday, June 4, 1999
If those who use Arabic, Thai or other scripts used the first six letters
of their respective alphabet instead of A-F to input hex numbers,
shouldn't they also be enabled to use their style of 0-9? (Not having a
zero of its own, I guess Tamil would use U+0030.)
          Jim Agenbroad ( )
     The above are purely personal opinions, not necessarily the official
views of any government or any agency of any.
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