Match Version Triplets

Find version numbers with exactly three numeric parts, such as 3.14.2.

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^ · $
Start/end; m = lines.
[abc] · \d
Listed character / digit.
* · + · ?
Zero or more, one or more, optional.
(...)
Capture a numbered group.
(?<name>...)
Named capture.
(?=...)
Ahead; lookbehind varies.
i · m · s
Ignore case / line anchors / dot-newline.
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Verified Fixture FX-R08

What it does

Find version numbers made of exactly three numeric parts, such as 3.14.2.

How to use it

  1. Load the example or paste your text.
  2. Check the counterexample.
  3. Export the matches.

Verified example

Example

Text "runtime 3.14.2 -> 3.14.7"

JavaScript · This browser
\b\d+\.\d+\.\d+\b

Result: "3.14.2", "3.14.7"

Python re · Local WASM
\b\d+\.\d+\.\d+\b

Result: "3.14.2", "3.14.7"

PCRE2-8 · Local WASM
\b\d+\.\d+\.\d+\b

Result: "3.14.2", "3.14.7"

Go regexp · Local WASM
\b\d+\.\d+\.\d+\b

Result: "3.14.2", "3.14.7"

Counterexample

Text "version 3.14"

JavaScript · This browser
\b\d+\.\d+\.\d+\b

Result: no match

Python re · Local WASM
\b\d+\.\d+\.\d+\b

Result: no match

PCRE2-8 · Local WASM
\b\d+\.\d+\.\d+\b

Result: no match

Go regexp · Local WASM
\b\d+\.\d+\.\d+\b

Result: no match

Recorded by running fixture FX-R08 on : rp.js@1 on Node v24.21.0 (V8), v24.21.0, CPython 3.14.2 (Pyodide 314.0.7), PCRE2 10.48, go1.27.1. JavaScript results come from the rp.js@1 core on Node’s V8; your browser runs the same core.

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