FA-96477 / Phone number formatting / Member archive

Display masking of subscriber digits: country code digits are masked · case 02

"+42 555 ..." renders as "+** *** ..." hiding the country.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Strip. A leading "+" and the digits right after it (the country code) are shown. Among the remaining digits only the last four are shown and the others become "*"; separators are kept. If four or fewer digits remain they are all masked.

Why this case matters

Masked numbers appear in receipts, logs and support tools; revealing too much leaks personal data and revealing too little makes verification impossible.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
international with country code kept	`"+ * *** 1234"`	`"+42 * * 1234"`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.