Flymake Can Now Show Diagnostics at the End of the Line

If you’ve used modern editors like VS Code, you’ve probably noticed how they display error and warning messages inline, right at the end of the offending line. It’s a nice touch - you don’t have to hover over a squiggly underline or check a separate diagnostics buffer to see what’s wrong. Emacs 30 brings this capability to Flymake with the new flymake-show-diagnostics-at-end-of-line option.