Hi Hans,
> On 31 Jul 2020, at 10:32, Hans Hagen <[email protected]> wrote:
>
> Hi,
>
> Sorry for the long mail ...
>
> One of the changes in lmtx is that we freeze the properties that determine
> the paragraph shape as well as breaking into lines in such a way that we have
> predictable behaviour. As a side effect it can be that existing code (lmtx
> only) will behave differently (will be fixed when we notice) but also that
> some low level user tweaking can not work, i.e. they are just ignored, but
> only when they happen mid paragraph which actually is always debatable anyway.
>
> Now, if for some reasom you get unexpected results and can't wait for a fix,
> you can do this:
>
> \forgetparagraphfreezing : disables
> \setparagraphfreezing : enables (default)
Are those global or local or can they be prefixed? For example, can we do this:
\setparagraphfreezing
….
\placefigure[left]{}{} {Bla bla \forgetparagraphfreezing .. <override some
stuff> }
or would that still trigger the built-in freeze ?
>
> Of course it might have other side effects once in lmtx we everywhere expect
> freezing to be enabled. You can take a snapshot with:
>
> \freezeparagraphproperties : snapshot relevant parameters
> \defrostparagraphproperties : resets snapshot
>
> More efficient is snapshotting a subcategory:
>
> \updateparagraphproperties : all
> \updateparagraphpenalties : only penalties
> \updateparagraphdemerits : other than penalties
> \updateparagraphshapes : hangindent etc
>
> Don't use the low level commands that they use because we take plenty of time
> to experiment at that level and interfaces might evolve, for instance:
>
> \frozen\hangindent 30pt
> \frozen\hangafter 2
>
> is valid and will likely stay.
>
> We're talking of a conceptually rather different approach. Internally the
> engine is still doing the same things but we can control it a bit
> differently. Due to the way ConTeXt is set up, we can make such a paradigm
> shift without too much troubles. I'll wrap up more details in an article
> later.
>
> Other work in progress is: better columns in itemize, esp proper footnote
> support (not that I ever need that but I know users do so ...), experiments
> work ok, but I need to check spacing. In general, footnotes (will) behave a
> bit better, especially those used nested in other mechanisms. A side effect
> of more control is that we can do other tricks too and we're playing with it
> (kind of fun).
>
> More work in progress concerns paragraph wrappers and that will result in a
> rewrite of some existing mechanism (generic subsystems with instances), but
> that might as well go unnoticed.
>
> To give an idea of possibilities, here is an example:
>
> \definedescription[whatever][alternative=right:bottom]
>
> \startwhatever{just a small\\example}
> \input ward
> \stopwhatever
>
> No one ever requested it so see it an a quick and dirty example but don't
> hesitate to ask for more anyway (we like an occasional challenge).
>
> Anyway, it might take some weeks / iterations before all this settles down
> and now you can't say that we didn't warn you.
>
> So far,
>
> Hans
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
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> ___________________________________________________________________________________
Taco Hoekwater
Elvenkind BV
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