Grepping by Unicode range
TIL that ripgrep supports searching by Unicode ranges. For example:
rg "[\u0250-\u1FFF\u2027-\uFFFF]"
This greps for anything after the Latin Extended-B block, excluding some general punctuation like em/en dashes, curly quotes, and ellipses. (Useful to me for easily checking which characters I’m using on my website and thus what a new font would need to support.)