Another bogus deprecation message. If the first character of a scanset is `]`, then that is treated as wanting to match `]`, so is skipped over.
@ibuclaw created dlang/dmd pull request #14308 "fix Issue 23252 - Deprecation: format specifier "%[]]" is invalid" fixing this issue: - fix Issue 23252 - Deprecation: format specifier "%[]]" is invalid https://github.com/dlang/dmd/pull/14308
dlang/dmd pull request #14308 "fix Issue 23252 - Deprecation: format specifier "%[]]" is invalid" was merged into master: - c7fd14216816671b4d80c544ca7b26ecc03304ce by Iain Buclaw: fix Issue 23252 - Deprecation: format specifier "%[]]" is invalid https://github.com/dlang/dmd/pull/14308