[CSS3 Text] punctuation-trim

Hi,

The 'punctuation-trim' property is not yet represented in the current 
CSS3 Text draft. So I read the May 2003 CSS3 Text CR.
http://www.w3.org/TR/2003/CR-css3-text-20030514/#punctuation-trim


    Name:  punctuation-trim  
    Value:  none | start  
    Initial:  none  
    ...

I think it was insufficient. The following is my proposal.

Name:  punctuation-trim  
Value: none | auto | [start || end || adjacent]
Initial:  auto  
Applies to:  block-level and inline-block elements  
Inherited:  yes  
Percentages:  N/A  
Media:  visual  
Computed value:  specified value (except for initial and inherit)  

This property determines whether or not a fullwidth punctuation 
character should be trimmed if it appears at the start or end of a line, 
or adjacent to another punctuation.

Possible values: 

none
    Punctuations are not trimmed.

start
    Fullwidth opening punctuation is trimmed at the start of a line.

end
    Fullwidth closing punctuation is trimmed at the end of a line.

adjacent
    Fullwidth opening punctuation is trimmed if its previous adjacent 
    character is an opening punctuation or a fullwidth middle dot 
    punctuation.
    Fullwidth closing punctuation is trimmed if its next adjacent 
    character is a closing punctuation or a fullwidth middle dot 
    punctuation or a fullwidth opening punctuation.

    e.g.,
      Opening - Opening:    〔（  is rendered as 〔(
      Middle Dot - Opening: ・（  is rendered as  ・(
      Closing - Closing:     ）〕 is rendered as  )〕
      Closing - Middle Dot:  ）・ is rendered as  )・
      Closing - Opening:     ）〔 is rendered as  )〔
    
    Here,
      (Japanese)
        Fullwidth opening punctuations:   「『（‘“〔［｛〈《【
        Fullwidth closing punctuations:    」』）’”〕］｝〉》】。．、，
        Fullwidth middle dot punctuations: ・：；
      (Korean)
        Fullwidth opening punctuations:    「『（‘“〔［｛〈《【
        Fullwidth closing punctuations:    」』）’”〕］｝〉》】。．、，
        Fullwidth middle dot punctuations: ：；
      (Simplified Chinese)
        Fullwidth opening punctuations:    「『（‘“〔［｛〈《【
        Fullwidth closing punctuations:    」』）’”〕］｝〉》】。．、，
        Fullwidth middle dot punctuations: none
      (Traditional Chinese)
        Fullwidth opening punctuations:    「『（‘“〔［｛〈《【
        Fullwidth closing punctuations:    」』）’”〕］｝〉》】
        Fullwidth middle dot punctuations: ：；。．、，

auto
    The UA determines the punctuation trimming mode. It may be equivalent 
    to "start end adjacent" that is most preferable for standard Japanese 
    typography [JIS X 4051], or may be equivalent to "none" for low cost 
    processing.


-- 
Shinyu Murakami
Antenna House XSL Formatter team
http://www.antennahouse.com

Received on Tuesday, 31 October 2006 16:44:30 UTC