To use Flymake, activate the minor-mode
Use the command flymake-mode to toggle it on and off. The
mode line should indicate its presence via an indicator (see Mode line status).
Syntax checks happen “on-the-fly”. Each check is started whenever:
flymake-modeis started, unless
0.5seconds ago (the delay is configurable in
If the check detected errors or warnings, the respective buffer regions are highlighted. See Finding diagnostics, for how to learn what the problems are.