On 7/27/2021 11:46 PM, jbf via ntg-context wrote:
No, in fact I discovered that \startpostponingnotes is what is needed.
localfootnotes does work but places the footnote immediately below the
framed text, and I wanted it to appear in the usual footnote location,
which is achieved with startpostponingnotes
I assume that you use(d) mkiv/luatex and not lmtx/luametatex.
Footnotes are in tex speak 'inserts' and at some point they are filtered
and added to the datastructure (list) that is taken into account when
breaking a page.
When tex was written, the main application was books like those of Don
Knuth where inserts like notes occur at the outer level. However, a
macro package like context has all kind of complex deeply nested
elements and there these notes just disappear. The main (and valid)
reason is that it becomes kind of unpredictable what inserts are and
where they have to go. (This is one reason why as soon as a macro
package provides more functionality and control it also becomes much
larger deep down.)
For this footnote-text-getting-lost problem, in mkii a solution became
local notes and postponing.
In mmkiv it became a bit more clever and there is also an automigration
features although in some cases that gives other side effects so it's
not turned on by default.
In lmtx we use some new insert related features in luametatex so that's
what I'll discuss next. (One can quit reading if not interested.)
Although it is still not trivial to deal with these things (keep in mind
that users combine all mechanism which means that all mechanisms should
be able to cooperate) in luametatex the inserts can bubble up which
means that footnotes eventually will end up at the outer level.
So, if you use lmtx, ideally there is no need to use postponing (you can
try your exapmle in lmtx without postponing).
For the curious ... the low level mechanisms involved in this can also
be used for other purposes although currently this is not done. There is
plenty of relative new functionality that can/will be applied some day.
Here is an example:
\setbox0\hbox{\strut this is just a test}
\setprelistbox 0\hbox{\strut \quad before}
\setpostlistbox0\hbox{\strut \quad after}
test \par \box0 \par test
Here \setprelistbox and \setpostlistbox are macros that (ab)use these
hooks into lists. They will stay but keep in mind that when you use them
they can interfere with for instance already present inserts.
Take this:
\starttext
\setbox0\hbox{\strut this is just a\footnote{oeps} test}
\setbox2\hbox{\strut this is just a\footnote{oeps} test}
\setprelistbox 0\hbox{\strut \quad before: \prelistbox0}
\setpostlistbox0\hbox{\strut \quad after: \postlistbox0}
\setprelistbox 2\hbox{\strut \quad before}
\setpostlistbox2\hbox{\strut \quad after}
test \par \box0 \par \box2 \par test
\stoptext
If you look carefully you'll see / can deduce what happens with inserts
in luamatetatex.
Boxes are a major thing in tex, paragraphs are too, so here's another
(already described elsewhere) trick with hooks,
(\wrapuppar{)}some text and some more text and ...
(\wrapuppar{\removeunwantedspaces)}some text and some more text and ...
test\wrapuppar{\crlf\ignorepars}
test
test\wrapuppar{\ignorepars}
test
test\wrapuppar{\removeunwantedspaces\ignorepars}
test
These are actually features that are already around and (so far) have
proven to work ok. Especially the last examples are real tricky because
you don't know if other mechanisms also use these (some already do) but
all this box and pas stuff might eventually come with more high level
interfaces (there is already one for the par stuff, not yet for the box
stuff). But as with other such mechanism, one cannot rely on a naive
approach and just assume the single case usage, only the user knows
where it might interfere. On the other hand, low level box magick like
the above will work ok because it's just that box.
Welcome to the world of (new) low level context trickery, which is and
eventually will be described in the lowlevel-* manuals (after all I need
topics for occasional presentations and those need to be new and if
possible challenging.)
Hans
Julian
On 27/7/21 7:42 pm, Henning Hraban Ramm via ntg-context wrote:
Am 27.07.2021 um 06:07 schrieb jbf via ntg-context <ntg-context@ntg.nl>:
Is there any reason why the following MWE does not produce the
footnote at the bottom of the page? It seems like the use of
framedtext is preventing it, but am not sure why. Can I get around
this problem and still have framed text?
Julian
\setupframed[location=middle]
\startframedtext[width=.77\makeupwidth,corner=round]
The poems of St John of the Cross have been important for me in
recent years. This is John’s prayer from a verse in his Spiritual
Canticle:\footnote{John of the Cross, {\em Spiritual Canticle},
stanza 32. }
\startblockquote
You looked with love upon me, and deep within, your eyes imprinted
grace. This mercy set me free, held in your love’s embrace, to lift
my eyes adoring to your face.
\stopblockquote
I wonder how often John prayed that prayer.
\stopframedtext
Maybe localfootnotes are the solution (didn’t try):
https://wiki.contextgarden.net/Footnotes#Footnotes_in_Floats
Hraban
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