Re: [xsl] Authority For Western Line Breaking Rules

Subject: Re: [xsl] Authority For Western Line Breaking Rules
From: Mukul Gandhi <mukulw3@xxxxxxxxx>
Date: Tue, 16 Sep 2003 00:54:41 -0700 (PDT)
Hi Eliot,
  The XSL-FO spec says

that "hyphenation" may be used for line breaking. It
can be controlled by values "true" or "false". If
hyphenate is "true", the XSL-FO processor may use
language specific hyphenation table(as FOP does). If
hyphenate is "false", then hyphenation is not
performed, and line may be broken by the boundaries of
the specific container.. I am not very much sure how
line breaking is handled by various XSL-FO processors
if hyphenate="false"..


--- "W. Eliot Kimber" <eliot@xxxxxxxxxx> wrote:
> I am trying to find an authority for the rules by
> which Western 
> languages are composed into lines, in particular,
> the rules for where 
> line breaks are allowed.
> Annex 14, Line Breaking Properties, of the Unicode
> specification says:
> "Three principal styles of context analysis
> determine line-breaking
> opportunities.
> "1. Western â?? spaces and hyphens are used to
> determine breaks
> ..."
> As a native speaker of English I know this statement
> to be true but I 
> can't find an authority that says so.
> This issue is related to the ways in which different
> FO implementations 
> do line breaking.
> For background, Annex 14 is very permissive,
> implicitly allowing line 
> breaks wherever they are not explicitly disallowed
> and does not, for 
> example, disallow breaks following closing
> punctuation, allowing for 
> example, this break:
> "e.
> g., a thing"
> That is, Annex 14 allows this break, even though it
> would be wrong in 
> any Western language I'm familiar with.
> Annex 14 is also informative--it does not require
> conforming Unicode 
> implementations to implement the Annex 14 rules
> except for those 
> characters that have normative line breaking
> properties, such as line 
> separator and soft hyphen.
> I'd be grateful for any assistance.
> Thanks,
> Eliot
> -- 
> W. Eliot Kimber
> ISOGEN International, LLC
> eliot@xxxxxxxxxx
>  XSL-List info and archive: 

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