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Re: [css3-text] <spacing-limit> incompatible with calc due to different treatment of lengths and %s

From: fantasai <fantasai.lists@inkedblade.net>
Date: Thu, 05 Jan 2012 15:19:09 -0500
Message-ID: <4F0605BD.4030501@inkedblade.net>
To: www-style@w3.org
On 01/05/2012 02:28 PM, Tab Atkins Jr. wrote:
> The<spacing-limit>  type defined for 'word-spacing' in Text 3
> <http://dev.w3.org/csswg/css3-text/#spacing-limit>  assigns
> substantially different meanings to percentages and lengths - the
> former sets the word spacing to the given value, while the latter
> *increments* the word spacing by the given value.
> If calc() is used here and mixes %s and lengths, like "calc(50% +
> 1ch)", what does this mean?  If I'm reading correctly, I think this
> would result in a<length>  equal to 1ch + half the default word
> spacing, making the total word spacing equal to 1ch + 150% the
> default.  Is this intended?

I expected it to mean "half the word spacing plus 1ch". But you're saying
that doesn't make sense...

> If so, this seems suboptimal, as it's then impossible to, say, use
> calc() to set the word-spacing to a particular length.  (I had
> expected "calc(0% + 1ch)" to kinda work like that.)  Perhaps we can
> alter word-spacing to accept both a percentage and a length, and
> combine their effects?

word-spacing takes up to three values, so that wouldn't be parseable.

Received on Thursday, 5 January 2012 20:19:42 UTC

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