How does IntelliJ IDEA colorize `*.log` files?

the highlighting in log files is currently done by IntelliJ TextMate plugin

• youtrack.jetbrains.com/issue/IJPL-34315#27-5239803.0-0
  • archive.is/OUHSw#27-5239803.0-0

TextMate highlighter uses public textmate grammar that we do not control

• youtrack.jetbrains.com/issue/IJPL-34315#27-5240329.0-0
  • archive.is/OUHSw#27-5240329.0-0