regex not working | latcord | Page 1

unkempt pagoda Apr 25, 2026, 8:10 PM

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I'm trying to hide all stone items and I'm using regex to select them but it's not working.

global.stone = [
    [/minecraft:.*(?>!sand|red|drip|glow|grind).*stone(?!cutter)/, /minecraft:.*(granite|diorite|andesite|tuff|calcite)/, /.*deepslate(?!.*ore)/]
]```
It gives me this error when I restart the game:
`dev.latvian.mods.rhino.EcmaError: SyntaxError: Invalid quantifier ?`


(Just to note the code hiding the items work its the code above that errors)

still tinselBOT Apr 25, 2026, 8:10 PM

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Once your ticket has been resolved, please close it with </ticket close:1054771505520717835> command!

upbeat spindle Apr 25, 2026, 8:11 PM

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As it says on the tin - whatever quantifier you are using isn't recognized by Rhino

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And isn't supported by ECMAScript at all

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What did you use to create the regex?

unkempt pagoda Apr 25, 2026, 8:13 PM

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I copied the regex from here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Regular_expressions/Lookbehind_assertion

MDN Web Docs

Lookbehind assertion: (?<=...), (?<!...) - JavaScript | MDN

A lookbehind assertion "looks behind": it attempts to match the previous input with the given pattern, but it does not consume any of the input — if the match is successful, the current position in the input stays the same. It matches each atom in its pattern in the reverse order.

upbeat spindle Apr 25, 2026, 8:13 PM

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Whatever you used in your regex isn't a lookbehind assertion

unkempt pagoda Apr 25, 2026, 8:16 PM

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I'm confused why it isn't counting as a lookbehind assertion, I copied the syntax from there and replaced the placeholder parameters

upbeat spindle Apr 26, 2026, 7:44 AM

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?>!
This isn't a lookbehind assertion

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See that the > is wrong way?

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Lookbehind assertion is ?<!

unkempt pagoda Apr 26, 2026, 12:43 PM

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ty!

#regex not working