M-n (flymake-goto-next-error) custom

Move point to the next error.

M-n (flymake-goto-prev-error) custom

Move point to the previous error.

Commands:

• flymake-show-buffer-diagnostics
• flymake-show-project-diagnostics

On-the-fly buffer checking

(require 'flymake)

Disable the legacy Flymake back end to avoid noise in logs.

(remove-hook 'flymake-diagnostic-functions
             'flymake-proc-legacy-flymake)

Use the keybindings recommended in the GNU Flymake manual.

(keymap-set flymake-mode-map "M-n" #'flymake-goto-next-error)
(keymap-set flymake-mode-map "M-p" #'flymake-goto-prev-error)