[xep-support] Height of Table Rows With Empty Content

[Eliot Kimber]

Nikolai Grigoriev wrote:

> Eliot,
> 
> 
>>I think the no-height-specified behavior of XEP is a bug 
>>since there is content in the cells, which should require 
>>that the inline areas be rendered at the current line height.
> 
> 
> XEP does not treat ZWSP as a content element: we consider 
> it an empty inline that does nothing except enabling line break
> at the specified point. What you see are actually empty blocks.
> I am not sure it is a bug; just because the semantics of the
> character is to generate neither visible marks nor caret move,
> a line made of only ZWSPs can be considered empty.

Hmmm. I understand the logic, but I don't think it's justified by the 
either the XSL-FO spec or the Unicode spec (at least I couldn't find 
anything that suggested that ZWSP is more than just that: a space of 
zero width). That is, it's a character and is not a white-space 
character per the XSL-FO spec, and therefore it must be treated as any 
other character and therefore preserved.

This is not a bug issue particularly--using fo:leader is probably the 
better markup approach, but I don't think I can agree with the 
implementation behavior described above.

Cheers,

E.
-- 
W. Eliot Kimber
Professional Services
Innodata Isogen
9030 Research Blvd, #410
Austin, TX 78758
(512) 372-8122

eliot at innodata-isogen.com
www.innodata-isogen.com

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