More about directions

[iherman]

In §2.5.1 Quoted Literals as part of the examples, it may be better to use a "real" example for directions (the ones listed among the examples are really superfluous). E.g.,

show:218 show:blurb "HTML و CSS: تصميم و إنشاء مواقع الويب"@ar--rtl.

or:

show:218 show:blurb "HTML היא שפת סימון."@he--rtl

Maybe it is also important add a note whereby the text the value field in turtle represents the text as it is stored in memory and not as it is supposed to be displayed. (We spent quite some time to get it right in the spec for the publication manifest, feel free to copy and paste.)

(In my experience, getting the spec examples right bidirectional text is a challenge; you should probably ask the i18n guys to check it.)

[afs]

(fixed syntax of @ar--ltr)

[gkellogg]

Note that RDF Concepts has a more general discussion of BIDI similar to what you pointed to in the ePub spec, which has been reviewed by the I18N group. But, we can add further explaination of ltr and rtl similar to what you have.

[pfps]

Wouldn't it also be useful to have an example where initial direction alone is insufficient? I think that the examples involve a RTL language with embedded LTR strings that are separated by neutral characters.

[gkellogg]

Concepts expands more on this, but it could use a langString example which dominates directionality based on the first character.

[gkellogg]

Wouldn't it also be useful to have an example where initial direction alone is insufficient? I think that the examples involve a RTL language with embedded LTR strings that are separated by neutral characters.

@pfps, see w3c/rdf-concepts#109, Specifically https://github.com/w3c/rdf-concepts/blob/0957e914d33cb39326aa6828d84b47fb0056530d/spec/index.html#L860-L864,

   <p>In the absence of an explicit initial text direction, the [[?UAX9]] algorithm
     can detect text direction from the initial character.
     For example "<bdi lang="ar">اَلأَعْشَى</bdi> - 1st place" displays the
     Arabic characters in a right-to-left fashion, while in memory
     they would be stored as "<bdo dir="ltr" lang="ar">اَلأَعْشَى</bdo> - 1st place"</p>