Extract Key-value Fields

Extract key=value pairs whose key is an identifier and whose value has no spaces.

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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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the RegExp of this browser (version not pinned)

Not available in JavaScript · This browser: x · ignore pattern whitespace; a · ASCII-only classes; U · lazy by default; J · duplicate names. u and v cannot be combined.

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Verified Fixture FX-R05

What it does

Extract key=value pairs whose key is an identifier and whose value contains no whitespace or =.

How to use it

  1. Load the example or paste your text.
  2. Group 1 is the key and group 2 the value.
  3. Export them as two columns.

Verified example

Example

Text "id=TX-00057 status=ok"

JavaScript · This browser
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: "id=TX-00057", "status=ok"

Python re · Local WASM
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: "id=TX-00057", "status=ok"

PCRE2-8 · Local WASM
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: "id=TX-00057", "status=ok"

Go regexp · Local WASM
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: "id=TX-00057", "status=ok"

Counterexample

Text "=missing"

JavaScript · This browser
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: no match

Python re · Local WASM
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: no match

PCRE2-8 · Local WASM
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: no match

Go regexp · Local WASM
\b([A-Za-z_][A-Za-z0-9_]*)=([^\s=]+)

Result: no match

Recorded by running fixture FX-R05 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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