Sorry for re-asking this question by replying to myself; after many
trials, I am sure this is a real problem.
Any hints are much appreciated.
Regards,
黄复雄（Huang Fusyong）
On Mon, Sep 16, 2024 at 11:52 AM 黄复雄 <aahua...@gmail.com> wrote:
>
> Hello, dear Hans.
>
> I have a Lua module that doesn't work in the latest version 2024.08.16
> 16:30. After investigation,
> I found that the errors first occurred in the appendaction. It could be
> appended
> normally in the version 2024.04.01 08:59, but failed in the latest version.
> So,
> I made a minimum runnable example for the appendaction problem,
> mini-try.lmtx, as
>
> ```ConTeXt
> \startluacode
> Moduledata = Moduledata or {}
> Moduledata.vtypeset = Moduledata.vtypeset or {}
>
> function Moduledata.vtypeset.rotate_all1(head)
> print(">>>>>> HERE IS ROTATE_ALL1")
> return head, done
> end
>
> function Moduledata.vtypeset.rotate_all2(head)
> print(">>>>>> HERE IS ROTATE_ALL2")
> return head, done
> end
>
> nodes.tasks.appendaction("processors", "after",
> "Moduledata.vtypeset.rotate_all1")
> nodes.tasks.appendaction("shipouts", "after",
> "Moduledata.vtypeset.rotate_all2") -- fails here
>
> \stopluacode
>
> \starttext
>
> try
>
> \stoptext
> ```
>
> Compiled the mini-try.lmtx and got outputs in terminal:
>
> ```text
> D:\ah21\TEX\vertical-typesetting>cd d:\ah21\TEX\vertical-typesetting &
> chcp 65001 & context d:\ah21\TEX\vertical-typesetting\mini-try.lmtx
> Active code page: 65001
>
> resolvers | formats | executing runner 'run luametatex format':
> luametatex --jobname="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx"
> --socket --shell-escape
> --fmt=D:/venvs/context-win64/tex/texmf-cache/luametatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.fmt
> --lua=D:/venvs/context-win64/tex/texmf-cache/luametatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.lui
> --c:currentrun=1
> --c:fulljobname="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx"
> --c:input="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx"
> --c:kindofrun=1 --c:maxnofruns=9
> --c:texmfbinpath="D:/venvs/context-win64/tex/texmf-win64/bin"
> system >
> system > ConTeXt ver: 2024.08.16 16:30 LMTX fmt: 2024.9.15
> int: english/english
> system >
> system > 'cont-new.mkxl' loaded
> open source > level 1, order 1, name
> 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl'
> system > beware: some patches loaded from cont-new.mkiv
> close source > level 1, order 1, name
> 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl'
> system > files > jobname
> 'd:/ah21/TEX/vertical-typesetting/mini-try', input
> 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx', result
> 'd:/ah21/TEX/vertical-typesetting/mini-try'
> fonts > latin modern fonts are not preloaded
> languages > language 'en' is active
> open source > level 1, order 2, name
> 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx'
> fonts > preloading latin modern fonts (second stage)
> fonts > 'fallback modern rm 12pt' is loaded
> >>>>>> HERE IS ROTATE_ALL1
> >>>>>> HERE IS ROTATE_ALL1
> lua error > lua error on line 1 in file
> d:/ah21/TEX/vertical-typesetting/mini-try.lmtx:
>
> registered function call [254]:
> ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328:
> attempt to call a nil value
> stack traceback:
> ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328:
> in upvalue 'compile'
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:231:
> in upvalue 'create'
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:247:
> in upvalue 'actions'
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:38:
> in function <...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:37>
> (...tail calls...)
> 1 >> \startluacode
> 2 Moduledata = Moduledata or {}
> 3 Moduledata.vtypeset = Moduledata.vtypeset or {}
> 4
> 5 function Moduledata.vtypeset.rotate_all1(head)
> 6 print(">>>>>> HERE IS ROTATE_ALL1")
> 7 return head, done
> 8 end
> 9
> 10 function Moduledata.vtypeset.rotate_all2(head)
> 11 print(">>>>>> HERE IS ROTATE_ALL2")
> mtx-context | fatal error: return code: 1
>
> D:\ah21\TEX\vertical-typesetting>
> ```
>
> and got a mini-try-error.log:
>
> ```text
> return {
> ["filename"]="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx",
> ["lastcontext"]="",
> ["lastluaerror"]="registered function call [254]:
> ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328:
> attempt to call a nil value\nstack traceback:\n
> ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328: in
> upvalue 'compile'\n
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:231: in
> upvalue 'create'\n
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:247: in
> upvalue 'actions'\n
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:38: in
> function <...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:37>\n
> (...tail calls...)",
> ["lasttexerror"]="",
> ["linenumber"]=1,
> ["luaerrorline"]="328",
> ["offset"]=10,
> ["skiplinenumber"]=1,
> }
>
> ```
>
> and got a mini-try.log:
>
> ```text
> system >
> system > ConTeXt ver: 2024.08.16 16:30 LMTX fmt: 2024.9.15
> int: english/english
> system >
> system > 'cont-new.mkxl' loaded
> open source > level 1, order 1, name
> 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl'
> system > beware: some patches loaded from cont-new.mkiv
> close source > level 1, order 1, name
> 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl'
> system > files > jobname
> 'd:/ah21/TEX/vertical-typesetting/mini-try', input
> 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx', result
> 'd:/ah21/TEX/vertical-typesetting/mini-try'
> fonts > latin modern fonts are not preloaded
> languages > language 'en' is active
> open source > level 1, order 2, name
> 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx'
> fonts > preloading latin modern fonts (second stage)
> fonts > 'fallback modern rm 12pt' is loaded
> lua error > lua error on line 1 in file
> d:/ah21/TEX/vertical-typesetting/mini-try.lmtx:
>
> registered function call [254]:
> ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328:
> attempt to call a nil value
> stack traceback:
> ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328:
> in upvalue 'compile'
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:231:
> in upvalue 'create'
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:247:
> in upvalue 'actions'
> ...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:38: in
> function <...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:37>
> (...tail calls...)
> 1 >> \startluacode
> 2 Moduledata = Moduledata or {}
> 3 Moduledata.vtypeset = Moduledata.vtypeset or {}
> 4
> 5 function Moduledata.vtypeset.rotate_all1(head)
> 6 print(">>>>>> HERE IS ROTATE_ALL1")
> 7 return head, done
> 8 end
> 9
> 10 function Moduledata.vtypeset.rotate_all2(head)
> 11 print(">>>>>> HERE IS ROTATE_ALL2")
>
> ```
>
> My question is: Can I still appendaction in "shipouts" "after"? If so,
> how to do it?
>
> Best regards,
> 黄复雄(Huang Fusyong)
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