On Thursday, October 5, 2023 at 6:19:10 AM UTC-4 Albert Krewinkel wrote:


jcr writes: 

> Another approach is to use Lua's debug facilities to find the path to 
> the script being executed, and add its directory to the Lua package 
> path. This is the function I use: 
> 
> ``` 
> local function addMyDirToPath() 
> local myFile = debug.getinfo(2, "S").source:sub(2) 
> local myDir = myFile:match("(.*)/.*") or '.' 
> package.path = ("%s/?.lua;%s"):format(myDir, package.path) 
> end 
> ``` 

That's elegant. Another way to get the value of `myDir` would be 

local myDir = pandoc.path.directory(arg[0]) 

and should also work on all platforms. It relies on pandoc's built-in 
path library and on a feature of the default lua interpreter, which 
pandoc replicates for compatibility: 
https://www.lua.org/manual/5.4/manual.html#7 


I can't take credit for the elegance: that part comes from stackoverflow 
(https://stackoverflow.com/a/23535333). The answer below it there does, in 
fact, suggest arg[0], but the elegant solution got more votes. I think I'll 
change my function to use arg[0] as you suggest.

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