A bunch of tips and tricks for doing regex matching in YAML-tmLanguage for sublime text editor

regex language matching.YAML-tmLanguage

patterns:
- comment: numbers including with decimal places
  name: constant.numeric.eppl
  match: (?<=[^a-zA-Z0-9\.])([\-]{0,1}[\d\.]+)
  
- name: keyword.control.eppl
  match: \b(if|else)\b
  
- comment: match strings
  name: string.eppl
  match: \"[\s\S]*?\"
  
- comment: match comments with { comment } format
  name: comment.block.eppl
  begin: (\{)
  end: (\})
  
- comment: match functions defined using def keyword
  name: entity.name.function.eppl
  match: \b(?<=def)(.*)\b