attempt to call a nil value (upvalue 'f')

[yanhuacuo]

升级到了 新的COMMIT后，原来正常的lua脚本收到一堆同一个指向的报错 aeb1e9d

求指点大概的原因在哪里，看得一头雾水。

Log file created at: 2020/09/14 11:15:58


Running on machine: DESKTOP-2E92SH5


Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg


E0914 11:15:58.694053  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.695050  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.696096  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.697018  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.697018  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.697018  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.697018  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.697018  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.805943  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.806226  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.806226  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.806226  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.996857  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.997216  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.997216  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:15:58.997216  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:16:00.265516  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:16:00.265516  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:16:00.265516  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0914 11:16:00.265516  8068 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')

[yanhuacuo]

上一次编译是 7月9号，配置没有动过，新的 COMMIT 后，就如上报错了。

[hchunhui]

错误报在了内部的 helper code，所以看起来有些误导。它的意思是没有找到 lua_filter@ lua_translator@ 后面跟的那个函数。

新的 commit 只是会在 user dir 找不到 lua 脚本的情况下，去 shared dir （程序文件夹）找，这个修改看起来没问题，我自己用也是正常的。如果可以确定是这个 commit 导致的，需要检查一下是不是以前不小心在 $shared_dir/lua 放了某些文件导致冲突。

另外最近（7月2号）我把 lua 的默认版本从5.3调到了5.4，也有可能是这个原因导致的。

[yanhuacuo]

初步分析，可能是 lua 版本引起的问题，

大佬有时间的话，测试一下这个函数能否正常加载，这个是之前的「单字过滤」的功能。

--- single_char
function single_char(input, env)
   b = env.engine.context:get_option("single_char")
   for cand in input:iter() do
      if (not b or utf8.len(cand.text) == 1 or cand.type == "qsj"or cand.type == "time"or cand.type == "date"or cand.type == "help") then
         yield(cand)
      end
   end
end

[yanhuacuo]

确信上述函数能引起报错，但是从报错内容上看，看不出原因。
查了一下 lua5.4 的文档，luaconf.h 中的不兼容列表里，也没找到该函数使用到的相关关键字。
报错内容，没有改变……
哦，怀疑人生。
因为……还有一批实现某些功能的，更复杂的函数也是一并失效的，但原因只能逐个查找。
这个最简单的要是查清，可能别的也就容易处理了。

Log file created at: 2020/09/15 00:53:25


Running on machine: DESKTOP-2E92SH5


Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg


E0915 00:53:25.037729 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:53:25.039768 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:53:25.247362 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:53:26.731674 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:53:26.931860 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:54:05.136234 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:54:05.373957 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:54:06.486285 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0915 00:54:06.673799 18352 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')

[yanhuacuo]

我仔细比对了早前正常编译的版本，确实是 7月9号 拉下来的文件，那时的 lua 已然是 5.4 了，一切都是正常了。
我猜，也许最新的 commit 大概也是正常的。

这两次事件唯一的「变量」就是 Librime 的主代码。

我使用了今天这个时间节点上的 librime 主代码：

rime/librime@f3a2ad0

最新的 librime 主代码对咱们的 lua 库有了冲突？

很可能是这样……

[yanhuacuo]

时间线上看，Librime 主代码在这两个月内更新二十多次，Lua的报错部分（如上所贴）又看不出端倪，大概率是兼容方面出了问题。

只能期待大佬来排雷了。

https://github.com/rime/librime/commits/master

[yanhuacuo]

lua插件放到 7月9号的 librime 代码节点里，编译出的 librime 一切正常，确认是 librime 最新的主代码节点，对咱们的 Lua插件不兼容了。

[CharlesMengCA]

Jul 27, 2020的librime也没有问题。

[yanhuacuo]

Jul 27, 2020的librime也没有问题。

试试最新的：rime/librime@f3a2ad0

[yanhuacuo]

Jul 27, 2020的librime也没有问题。

现在已经确认 lua 插件没问题，而是 librime 主代码的问题。

最新时间节点的 librime 主代码与插件联合编译正常，但是功能并不正常：

https://github.com/rime/librime/commits/master

[hchunhui]

谢谢大家的反馈。我使用了最新的 ibus-rime, librime, librime-lua 代码编译（见 https://github.com/hchunhui/ibus-rime.AppImage/releases ），但没有复现上述故障。后面有空再研究一下最近的代码变化。

[yanhuacuo]

谢谢大家的反馈。我使用了最新的 ibus-rime, librime, librime-lua 代码编译（见 https://github.com/hchunhui/ibus-rime.AppImage/releases ），但没有复现上述故障。后面有空再研究一下最近的代码变化。

linux 下确实可用，但 windows 下编译出的 rime.dll 又的确不可用。同一套 librime 的源码。

E0919 03:17:02.371892 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.557619 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.557619 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.557619 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.557619 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.754709 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.754709 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.755736 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:02.755736 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.386540 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.386540 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.386540 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.386540 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.597705 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.597705 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.597705 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')


E0919 03:17:03.597705 10424 lua_gears.cc:15] LuaTranslation::Next error(2): [string "table.unpack = table.unpack or unpack..."]:4: attempt to call a nil value (upvalue 'f')

[hchunhui]

我好像找到原因了，是 librime 返回了无效的 user dir 和 shared dir，导致 rime 脚本无法被正确读取并加载。

目前只有在 windows 下能观察到这个现象。我在debug 分支加了调试日志，对应的字符串打印出来是乱码：

I0920 11:25:30.476583  9576 modules.cc:40] debug: user_dir: P鸐�struct LuaType<struct rime::Segment const >
I0920 11:25:30.476583  9576 modules.cc:41] debug: shared_dir: 鐱N���
I0920 11:25:30.476583  9576 modules.cc:42] debug: user_file: P鸐�struct LuaType<struct rime::Segment const >\rime.lua
I0920 11:25:30.476583  9576 modules.cc:43] debug: shared_file: P鸐�struct LuaType<struct rime::Segment const >\rime.lua
I0920 11:25:30.476583  9576 modules.cc:59] rime.lua info: rime.lua should be either in the rime user data directory or in the rime shared data directory

[yanhuacuo]

我好像找到原因了，是 librime 返回了无效的 user dir 和 shared dir，导致 rime 脚本无法被正确读取并加载。

目前只有在 windows 下能观察到这个现象。我在debug 分支加了调试日志，对应的字符串打印出来是乱码：

I0920 11:25:30.476583  9576 modules.cc:40] debug: user_dir: P鸐�struct LuaType<struct rime::Segment const >
I0920 11:25:30.476583  9576 modules.cc:41] debug: shared_dir: 鐱N���
I0920 11:25:30.476583  9576 modules.cc:42] debug: user_file: P鸐�struct LuaType<struct rime::Segment const >\rime.lua
I0920 11:25:30.476583  9576 modules.cc:43] debug: shared_file: P鸐�struct LuaType<struct rime::Segment const >\rime.lua
I0920 11:25:30.476583  9576 modules.cc:59] rime.lua info: rime.lua should be either in the rime user data directory or in the rime shared data directory

今日修改【 rime/librime@78abaa8 】已修复该问题。
感谢两位大佬。