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Regular Expressions in Notion Formulas

Created by Thomas Frank | Learn Notion Formulas | Notion Basics | Templates | Twitter

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📚 References:

Character Escapes

Character Classes

Quantifiers

Anchors

Character Grouping

Substitutions

Backreferences

Alternation

Unicode Numbers in Regular Expressions

Regular Expression Examples

Notion Formula Examples

📜 Table of Contents:

* - match zero or more of the preceding character

replaceAll("Trs Tres Trees Treeeeees", "Tre*s", "🌳")
// Output: 🌳 🌳 🌳 🌳

replaceAll("Trs Tres Trees Treees Treeees", "Tr(ee)*s", "🌳")
// Output: 🌳 Tres 🌳 Treees 🌳

Test

+ - match one or more of the preceding character

replaceAll("Trs Tres Trees Treeeeees", "Tre+s", "🌳")
// Output: Trs 🌳 🌳 🌳

replaceAll("Trs Tres Trees Treees Treeees", "Tr(ee)+s", "🌳")
// Output: Trs Tres 🌳 Treees 🌳

Test

? - preceding character is optional; match zero or one of it

replaceAll("Trs Tres Trees Treeeeees", "Tre?s", "🌳")
// Output: 🌳 🌳 Trees Treeeeees

replaceAll("Trs Tres Trees Treees Treeees","Tr(ee)?s","🌳")
// Output: 🌳 Tres 🌳 Treees Treeees

Test

?? - match preceding character zero or one times (as few times as possible)

replaceAll("Trs Tres Trees Treees Treeees", "Tre??s", "🌳")
// Output: 🌳 🌳 Trees Treees Treeees

replaceAll("Trs Tres Trees Treees Treeees", "Tr(ee)??s", "🌳")
// Output: 🌳 Tres 🌳 Treees Treeees

Test

+? - match preceding character one or more times (as few times as possible)

replace("Tree", "Tre+?", "🌳")
// Output: 🌳e

Test

*? - match preceding character zero or more times (as few times as possible)

replace("Heeeeeeelp", "H.*?", "*")
// Output: *eeeeeeelp

replace("Heeeeeeelp", "H.*?l", "*")
// Output: *p

Test

{n} - match the preceding character n times

replace("Heeeeeeelp", "e{7}", "*")
// Output: H*lp

Test

{n,} - match the preceding character n or more times

replace("Heeeeeeelp", "e{1,}", "*")
// Output: H*lp

Test

{n,m} - match the preceding character between n and m times (inclusive)

replace("Heeeeeeelp", "e{1,6}", "*")
// Output: H*elp

Test

{n}? - match the preceding character n times (no difference from {n}

replace("Heeeeeeelp", "e{1,}?", "*")
// Output: H*eeeeeelp

Test

{n,}? - match the preceding character at least n times, but as few times as possible

replace("Heeeeeeelp", "e{1,}?", "*")
// Output: H*eeeeeelp

Test

{n,m}? - match the preceding character at least n times, no more than m times, and as few times as possible

replace("Heeeeeeelp", "e{1,6}?", "*")
// Output: H*eeeeeelp

Test

© Thomas Frank