* Missing parinitskips in \normalizelinemode=0
@ 2022-10-19 1:01 Max Chernoff via ntg-context
2022-10-19 9:59 ` Hans Hagen via ntg-context
0 siblings, 1 reply; 3+ messages in thread
From: Max Chernoff via ntg-context @ 2022-10-19 1:01 UTC (permalink / raw)
To: ntg-context; +Cc: Max Chernoff
Hi Hans,
When running in \normalizelinemode=0, the \parinitleftskip and
\parinitrightskip nodes are either nonexistant or invisible from Lua,
causing tex.linebreak to not work correctly.
This sample file:
\enabledirectives[system.callbacks.permitoverloads]
\normalizelinemode=0
\directlua{
callback.register("pre_linebreak_filter", function(head)
tex.preparelinebreak(head)
local list, info = tex.linebreak(head)
print(info)
return head
end)
}
\starttext
\input knuth
\stoptext
Produces this output:
luatex warning > linebreak: list seems already prepared
luatex warning > linebreak: [ leftinit | rightinit | leftfill | rigthfill ] expected
nil
Thanks,
-- Max
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Missing parinitskips in \normalizelinemode=0
2022-10-19 1:01 Missing parinitskips in \normalizelinemode=0 Max Chernoff via ntg-context
@ 2022-10-19 9:59 ` Hans Hagen via ntg-context
2022-10-27 3:48 ` Max Chernoff via ntg-context
0 siblings, 1 reply; 3+ messages in thread
From: Hans Hagen via ntg-context @ 2022-10-19 9:59 UTC (permalink / raw)
To: Max Chernoff via ntg-context; +Cc: Hans Hagen
On 10/19/2022 3:01 AM, Max Chernoff via ntg-context wrote:
> Hi Hans,
>
> When running in \normalizelinemode=0, the \parinitleftskip and
> \parinitrightskip nodes are either nonexistant or invisible from Lua,
> causing tex.linebreak to not work correctly.
>
> This sample file:
>
> \enabledirectives[system.callbacks.permitoverloads]
>
> \normalizelinemode=0
>
> \directlua{
> callback.register("pre_linebreak_filter", function(head)
> tex.preparelinebreak(head)
> local list, info = tex.linebreak(head)
> print(info)
>
> return head
> end)
> }
>
> \starttext
> \input knuth
> \stoptext
>
> Produces this output:
>
> luatex warning > linebreak: list seems already prepared
> luatex warning > linebreak: [ leftinit | rightinit | leftfill | rigthfill ] expected
> nil
i'll bypass that warnign when the mode is zero
btw, you need to work with a copy of the list
Hans
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Missing parinitskips in \normalizelinemode=0
2022-10-19 9:59 ` Hans Hagen via ntg-context
@ 2022-10-27 3:48 ` Max Chernoff via ntg-context
0 siblings, 0 replies; 3+ messages in thread
From: Max Chernoff via ntg-context @ 2022-10-27 3:48 UTC (permalink / raw)
To: ntg-context; +Cc: Max Chernoff
Hi Hans,
> i'll bypass that warnign when the mode is zero
I saw that you made that change in the latest upload, thanks.
Unfortunately, I'm still getting the same output:
luatex warning > linebreak: list seems already prepared
luatex warning > linebreak: [ leftinit | rightinit | leftfill | rigthfill ] expected
nil
Also, what's causing me issues isn't the warning but rather that
tex.linebreak is returning nil instead of an info table as the second
return value.
> btw, you need to work with a copy of the list
Now that you point that out, I'm actually surprised that that example
worked at all. The real code does use a copy of the list though (and
also uses the proper callback interfaces instead of "system.callbacks.
permitoverloads")
Thanks,
-- Max
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