Modifying Transliterator Rules

I'm using the MacOS' Tamil language input tool. However this question can be answered in a generic way.

I am trying to make some changes in the rules under this folder.

/System/Library/Input Methods/TamilIM.app/Contents/Resources

How do start? Meanwhile I'm looking to solve the SIP issue by remounting the file system.

Will manually editing the Transliterator.txt file would work or do I have to compile the binary?


I think you should be able to just edit Transliterator.txt. I did this once long ago and it worked. But things may have changed since then...