existing-middle-and-unrelated.conf

Host test
  Port 80
# ------------START-CODER-----------
some coder config
# ------------END-CODER------------
# --- START CODER TOOLBOX test.coder.invalid
some jetbrains config
# --- END CODER TOOLBOX test.coder.invalid
Host test2
  Port 443
# --- START CODER TOOLBOX test.coder.unrelated
some jetbrains config
# --- END CODER TOOLBOX test.coder.unrelated