Subject: Re: Why has inline-space length-specs? From: Peter Nilsson <pnidv96@xxxxxxxxxxxxxx> Date: Thu, 22 Jul 1999 21:33:35 +0200 (CEST) |
On Thu, 22 Jul 1999, Tony Graham wrote: > Looking at Section 12.5.2, I can find two features of length-specs > that would make them useful in inline-space declarations. Firstly, a > length-spec "specifies a length as a linear combination of other > lengths that may not be currently known", and secondly you can compute > a value for the length-spec based on something else. For example: > > escapement-space-before: (inline-space (* 2 (actual-font-size)) > min: (* 1.8 (actual-font-size)) > max: (* 2.2 (actual-font-size))) > > These length-specs, and the resulting inline-space, are computed from > the value of another characteristic. > > (Actually, I could be just computing lengths, but you get the idea.) > This is the reasons for having length-specs at all. But I can't see any situations where a length-spec could be anything but a plain length in the current spec. (actual-font-size returns a length.) That was why I asked. Could it be like it is because implementations may introduce external procedures returning length-specs based on inline flow objects? Or is it just a "bug"? Regards, /Peter Nilsson -- '(?P . (?e . (?t . (?e . (?r))))) DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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