Sister dir path in Lua

In Lua, we can use the package.path variable to get the current directory path and then append the sibling directory name to get the path of the sister directory.

Here is an example:

-- Get the current directory path
local currentDir = package.path:match("(.-)[^%.]+$")
-- Append the sibling directory name to get the sister directory path

local sisterDir = currentDir .. "../sisterDir/"
-- Print the sister directory path

print(sisterDir)

In the above example, we are using the string.match() function to extract the current directory path by matching everything up to the last / character. We then append ../sisterDir/ to get the path of the sister directory.

This approach can be helpful when we have a Lua script file inside a directory and we want to access another directory that is at the same level as the current directory.