From: Peter Kirk (firstname.lastname@example.org)
Date: Thu Nov 25 2004 - 05:54:29 CST
On 25/11/2004 01:27, Asmus Freytag wrote:
>> Also the following clarification is being proposed for UAX #16 on
>> line breaking (public review issue #56):
> UTR#16 is UTF-EBCDIC, you must mean UAX#14.
>> But this draft also states:
>>> when NBSP follows SPACE, there is a break opportunity after the
>>> SPACE and NBSP will go as visible space onto the next line.
>> This is different from what Asmus stated above: "The sequence SPACE
>> NBSP *does* not allow a break
> my editing mistake in composing my message to you. If you check the
> first sentence of http://www.unicode.org/report/tr14-16.html#GL you
> will see why it's *does* allow the break.
404 error. I think you mean
But this sentence is the proposed amendment. I was wondering if this is
a material change to the algorithm, or just a clarification. And I
thought maybe you were describing the current situation and ignoring the
proposed change. So I looked back at the edition of UAX #14 which is
still current, http://www.unicode.org/reports/tr14/. It seems that part
of the proposed change is to move the rule "Donít break before or after
NBSP", currently part of LB11b, to after rule LB12 "Break after spaces",
making a proposed new rule LB13 - in accordance with the note "Many
existing implementations reverse the order of precedence between rules
LB11b and LB12." The change of ordering of course implies a change of
priority of the rules.
So, Asmus, it seems to me that you were right the first time. According
to the current standard, there is no line breaking opportunity in the
middle of <SPACE, NBSP>. But there is a proposed change to make this a
line breaking opportunity. Is that correct? Perhaps this part of the
change to UAX #14 has already been approved in principle by the UTC (as
no doubt there was a discussion of issues related to NBSP as part of the
discussion of the INVISIBLE LETTER proposal), but formally it is still
part of the public review issue.
-- Peter Kirk email@example.com (personal) firstname.lastname@example.org (work) http://www.qaya.org/
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