### Most appropriate sub-area of p5.js? Utilities ### p5.js version 2.x main (4b096e2) ### Actual vs expected behavior `splitTokens` builds a regex character class from the delimiter characters with only `[` and `]` special-cased (the 2015 fix for #1004), so other regex metacharacters corrupt the class: ```js splitTokens('a^b', '^'); // actual [] expected ['a', 'b'] // the ^ negates the class, so every character becomes a delimiter splitTokens('a\b', '\'); // actual SyntaxError: Invalid regular expression: /[\]/g // expected ['a', 'b'] ``` A `-` between delimiter characters also silently forms a range instead of matching the literal characters. ### Steps to reproduce Outputs above are from executed runs against current main. ### Note I am aware `splitTokens` was deprecated in 2.0 (#7624), so feel free to close this as wontfix if the function is not receiving fixes anymore. If it is, I have a small fix ready (escape `\`, `]`, `^`, `-` when building the class) with unit tests for both broken cases plus regression coverage for the existing bracket, array-delimiter and whitespace behaviors; the two new tests fail on current main and pass with the change. Will open the PR once approved.