* missing mails
@ 2022-06-23 15:05 Hans Hagen via ntg-context
2022-06-24 6:28 ` Max Chernoff via ntg-context
0 siblings, 1 reply; 3+ messages in thread
From: Hans Hagen via ntg-context @ 2022-06-23 15:05 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Hans Hagen
Hi,
I just found otu that the majority of the mailing list mails ended up in
a different mail box (som,ehoe thunderbird has problems with two
accounts being subscribed to the same list).
So, if there has been serious issues not resolved (the last year) let me
know. A quick checked that most got answered in some way,
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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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: missing mails
2022-06-23 15:05 missing mails Hans Hagen via ntg-context
@ 2022-06-24 6:28 ` Max Chernoff via ntg-context
2022-06-24 17:43 ` Hans Hagen via ntg-context
0 siblings, 1 reply; 3+ messages in thread
From: Max Chernoff via ntg-context @ 2022-06-24 6:28 UTC (permalink / raw)
To: ntg-context; +Cc: Max Chernoff
Hi Hans,
> So, if there has been serious issues not resolved (the last year) let me
> know.
I've been having two issues with parfillskip nodes in LMTX that I
haven't been able to figure out myself. Neither of them are particularly
serious, but the first one is quite annoying.
(The below is mostly copied from an earlier email, "Callbacks (and
nodes) in LuaMetaTeX")
1. In LMTX, calling "tex.linebreak" produces a
luatex warning > tex: left parfill skip is gone
warning. I don't get this warning in Plain LuaTeX, LuaLaTeX, or
MkIV, so I think that it's specific to LuaMetaTeX. The LuaMetaTeX
manual hardly mentions "left parfill skip"/"parfillleftskip", so I'm
not too sure what to do to avoid this warning.
Any call to "tex.linebreak" seems to produce this warning. Here's a
minimal example:
\startluacode
function test(head)
tex.linebreak(node.copylist(head))
return head
end
nodes.tasks.appendaction("processors", "after", "test")
\stopluacode
\starttext
Hello!
\stoptext
And a less minimal example:
% From CTAN or modules.contextgarden.net
\usemodule[lua-widow-control]
\starttext
\dorecurse{10}{\samplefile{knuth}}
\stoptext
With the lwc module, I call "tex.linebreak" twice for every
paragraph, so these warning messages get quite annoying. The log
file for compiling the lwc manual
https://github.com/gucci-on-fleek/lua-widow-control/runs/6946059955?check_suite_focus=true#check-step-9
is 22000 lines long, most of which are "left parfill skip" warnings.
2. The LuaMetaTeX manual says that "pre_linebreak_filter" is called
_after_ the parfillskip glue has been added, but this doesn't seem
to be the case. With LuaLaTeX/Plain LuaTeX/MkIV, this is true, but
the node list passed to the callback in MkXL is missing the
parfillskip.
This code:
\startluacode
function test(head)
local last = node.slide(head)
print "START"
for i=1,3 do
print(last)
print(
node.type(last.id),
node.subtypes(last.id)[last.subtype],
last.width,
last.stretchorder,
last.stretch
)
last = last.prev
end
print "STOP"
return head
end
nodes.tasks.appendaction("processors", "after", "test")
\stopluacode
\starttext
Hello!
\stoptext
with MkXL produces:
START
<node : 2521 <= 2258 => nil : glue spaceskip>
glue spaceskip 341648 0 384354
<node : 2509 <= 2521 => 2258 : glyph unset>
glyph nil 213792 nil nil
<node : 2497 <= 2509 => 2521 : glyph unset>
glyph nil 385140 nil nil
STOP
START
<node : 2611 <= 2357 => nil : glue userskip>
glue userskip 0 2 65536
<node : 2274 <= 2611 => 2357 : glyph unset>
glyph nil 385140 nil nil
<node : 2239 <= 2274 => 2611 : rule strut>
rule strut 0 nil nil
STOP
but with MkIV produces:
START
<node 1239 < 1041 > nil : glue 15>
glue parfillskip 0 nil 65536
<node 1034 < 1239 > 1041 : penalty 2>
penalty linepenalty nil nil nil
<node 1027 < 1034 > 1239 : glyph 256>
glyph nil 213792 nil nil
STOP
START
<node 1375 < 1479 > nil : glue 0>
glue userskip 0 nil 65536
<node 1457 < 1375 > 1479 : glyph 256>
glyph nil 385140 nil nil
<node 1444 < 1457 > 1375 : hlist 2>
hlist box 0 nil nil
STOP
This problem isn't very serious at all since I can work around it
fairly easily, but I'm including it since it's so closely related
to the issue above.
I _think_ that both of these are engine bugs, but I may just misreading
the docs or missing something completely. Please let me know if you have
any solutions.
Thanks,
-- Max
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: missing mails
2022-06-24 6:28 ` Max Chernoff via ntg-context
@ 2022-06-24 17:43 ` Hans Hagen via ntg-context
0 siblings, 0 replies; 3+ messages in thread
From: Hans Hagen via ntg-context @ 2022-06-24 17:43 UTC (permalink / raw)
To: Max Chernoff, ntg-context; +Cc: Hans Hagen
On 6/24/2022 8:28 AM, Max Chernoff wrote:
> 2. The LuaMetaTeX manual says that "pre_linebreak_filter" is called
> _after_ the parfillskip glue has been added, but this doesn't seem
> to be the case. With LuaLaTeX/Plain LuaTeX/MkIV, this is true, but
> the node list passed to the callback in MkXL is missing the
> parfillskip.
tex.linebreak hasn't yet been adapted to the additional glue (parfil
left skip, and both par init skips)'; i'll do that
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
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
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