CLI tool to get function name from line of source code

You should be able to use ast-grep for this.

Ah, that’s a good idea. I’ll give that a try when I have a chance. Thanks!

I never tried ast-grep for that in particular but anything that uses TreeSitter (like that tool) should be able to do it.

It would have to be in conjunction with a scripting language. Maybe a terser way but I was thinking along these lines:

ast-grep scan --inline-rules '
id: find-def
language: Elixir
rule:
  any: 
    - pattern: def $$$
    - pattern: def $$$()
    - pattern: def $$$($$$)
' --json=compact -- path/to/file.ex

giving you all the (public) function definitions in path/to/file.ex. The json includes their start and end lines.