---
title: kUnicodeMatchUnicodeFormatMask
framework: Core Services
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 17.0+, macOS 10.0+]
path: coreservices/1433554-unicode_matching_masks/kunicodematchunicodeformatmask
---

# kUnicodeMatchUnicodeFormatMask

If set, excludes mappings that do not match the text encoding format of the unicodeEncoding field of the specified Unicode mapping structure. If not set, the function ignores the text encoding format of that field.

## Declaration

```occ
kUnicodeMatchUnicodeFormatMask = 1L << kUnicodeMatchUnicodeFormatBit
```