From: Andrew C. West (email@example.com)
Date: Mon Apr 11 2005 - 07:28:46 CST
On Mon, 11 Apr 2005 19:21:36 +0930, Kevin Brown wrote:
> I maintain a datafile of ranges and subranges for my own use in FontLab and I
> have just finished updating this datafile to take account of Unicode 4.1
> I used the code charts at www.unicode.org/charts/PDF/Unicode-4.1/ which clearly
> show the additional characters.
> However, I have come across a couple of examples where the names of subranges
> had changed but, because no new characters had been added, the change to the
> name was very easily missed.
> An example is the subrange U+2B00-U+2B0D which has no new characters added to
> but has had a name change from "Arrows" to "White and Black Arrows".
> I happened to notice the above change because there were some new characters
> added within the same range U+2B00-U+2B13 but it has got me wondering if there
> are any cases where subrange names have been changed within ranges where NO new
> characters have been added?
I guess that the general "Arrows" was changed to the more specific "White and
black arrows" because of the addition of "Arrows with bent tips" at 2B0E..2B11
and "Squares" at 2B12..2B13.
> How would I find these without checking through the whole database and
> every subrange in 4.1 with those in 4.0 (a daunting prospect I think you'll
> agree!)? Is there somewhere on the Unicode site where such subtle changes are
If you want a list of sub-range changes between Unicode 4.0 and 4.1, use a
programme such as WinDiff to compare
<http://www.unicode.org/Public/4.0-Update/NamesList-4.0.0.txt> (N.B. the output
will be easier to read if you filter out all lines that do not start with "@"
Looking at my WinDiff output, in addition to the case you mention :-
For CJK Compatibility Ideographs block :
"The IBM 32 compatibility additions" => "The IBM 32 compatibility ideographs"
"JIS X 0213 compatibility additions" => "JIS X 0213 compatibility ideographs"
For Miscellaneous Symbols block :
"Map markers" => "Dictionary and map symbols"
"Warning signs" => "Miscellaneous symbols"
For Mathematical Operators block :
"Mathematical operators" is divided into 34 sub-ranges in 4.1.
I think this just about covers it.
> Would the powers that be consider marking subrange name changes in the same way
> that you mark the new characters?
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