Re[3]: Enabling protruding

[Hans Hagen <pragma@wxs.nl>]

At 12:10 PM 1/24/2002 +0100, you wrote:

>I thought it was possible to change the protruding by reassigning
>the lp/rpcodes.

this is related to how tex internally handles fonts; there are limitations; 
anyway, you don';t want to change them per paragraph, do you?

nb: context turns of protruding (the main switch) in the pagebuilder and 
other non mvl situations

>HH> this means that for the preloaded cmr fonts, (or any preloaded
>HH> font) one has to redefine them; also, because of the design
>HH> sizes, cmr's are not mapped onto Serif, so here we need to
>HH> manually set the fonts (unless one defines them as any ps
>HH> collection, ignoreing the design size)
>
>This is a little of a pain.

no, just a little price to pay

>About design sizes: couldn't you implement the font remapping
>mechanism in such a way that cmr10 sa 12 -> cmr12 and so on, or
>something like that?

sure, but the main problem is that one cannot ask the filesystem what fonts 
there are (try to open a font file from within tex); also, building this 
into context only for cmr is not worth the trouble and slowing down overhead

>Maybe something like use a flag (discrete=yes,no) so that when
>discrete is on (yes), you give the base name (cmr) and ConTeXt appends
>the size (10, 12, ...), and when discrete if off (no) it just
>scales.

there is not so much logic in the 10,12,... and believe me, i have other 
challenges

>Now cmr hangs even when align is not set to hanging (you can see
>this by prefixing \setupalign[nothanging] before the first
>dorecurse).

add a \par after each recurse and it will work as expected; pdftex applies 
the hanging during the par break, so the last values set in the par apply 
(as with left/rightskip cum suis)

Hans
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