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Locale Fallback Simulator

Process locale fallback simulator locally with complete copy/download and explicit rules.

locale-fallback-simulatorLOCAL WORKSPACE

Enabling local controls…

Inputs and settings

Processed in this tab without uploading or storing inputs. Each text field is limited to 32 KiB and complete output to 1 MiB; additional format and model limits apply.

Results

Review the settings and run. Editing inputs clears old results.

Processing model and limits

Canonicalize Unicode locale identifiers, then case-insensitive exact or lookup truncation with singleton removal. Lookup accepts an exact candidate or first supported prefix expansion, retaining supported order. Final default must be supported. Up to100 requested/supported tags, ≤128 characters each. No q weights, wildcard ranges, best-fit likely-subtag matching or language registry validation. Each text field is limited to 32 KiB; complete output to 1 MiB. Runs in a one-second local Worker, with no network requests.

Data and model checked: ToolHubEN source controls ↗RFC4647 lookup ↗

How to use this tool

Load the example, confirm field units and processing rules, then run locally. Editing any input clears the old result. Copy or download the complete output explicitly.

When not to use it

Canonicalize Unicode locale identifiers, then case-insensitive exact or lookup truncation with singleton removal. Lookup accepts an exact candidate or first supported prefix expansion, retaining supported order. Final default must be supported. Up to100 requested/supported tags, ≤128 characters each. No q weights, wildcard ranges, best-fit likely-subtag matching or language registry validation. Each text field is limited to 32 KiB; complete output to 1 MiB. Runs in a one-second local Worker, with no network requests.