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[css-text] What does 'text-align: start end' do on the last line?

From: L. David Baron <dbaron@dbaron.org>
Date: Mon, 17 Jun 2013 12:57:13 -0700
To: www-style@w3.org
Message-ID: <20130617195713.GA31632@crum.dbaron.org>
http://dev.w3.org/csswg/css-text/#text-align defines a value
'start end' whose definition is:

  # Specifies ‘start’ alignment of the first line and any line
  # immediately after a forced line break; and ‘end’ alignment of
  # any remaining lines not affected by ‘text-align-last’. 

http://dev.w3.org/csswg/css-text/#text-align-last in turn, says:
  # If ‘auto’ is specified, content on the affected line is aligned
  # per ‘text-align’ unless ‘text-align’ is set to ‘justify’. In
  # this case, content is justified if ‘text-justify’ is
  # ‘distribute’ and start-aligned otherwise. All other values have
  # the same meanings as in ‘text-align’. 

So as far as I can tell it's undefined what 'start end' should do
for the last line when 'text-align-last: auto' (the initial value)
is specified.  I think it should be specified to be 'end', and this
should be accomplished by removing the text "not affected by
'text-align-last'".

I also wonder whether it would make more sense to just have two
values in the general syntax for 'text-align' than specify just the
'start end' case.

(I'm also a little surprised by the definition of 'start end' as
using the start value after a forced break matching the way
'text-align-last' deals with forced breaks.  I thought the
motivation for having one of them be a separate property and one be
part of the value was related to having different rules there.  But
maybe I'm misremembering.)

-David

-- 
𝄞   L. David Baron                         http://dbaron.org/   𝄂
𝄢   Mozilla                           http://www.mozilla.org/   𝄂
Received on Monday, 17 June 2013 19:57:36 UTC

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