fix(swift) ensure keyword attributes highlight correctly

[bradleymackey]

Changes

• Prevent keyword attributes from greedily matching non-keyword attributes
• Lookahead to either a trailing whitespace character or an opening paren to ensure matches are exact for the keywords.
• Prevents issues like @objcMembers being prematurely highlighted as @objc only.
• Also prevents issues where meta attributes may have the same prefix as a keyword

Checklist

• [x] Added markup tests, or they don't apply here because...
• [x] Updated the changelog at CHANGES.md

[github-actions[bot]]

Build Size Report

Changes to minified artifacts in /build, after gzip compression.

5 files changed

Total change +32 B

View Changes

| file | base | pr | diff | | --- | --- | --- | --- | | es/core.min.js | 8.17 KB | 8.17 KB | +2 B | | es/highlight.min.js | 8.17 KB | 8.17 KB | +2 B | | es/languages/swift.min.js | 3.54 KB | 3.55 KB | +13 B | | highlight.min.js | 8.2 KB | 8.21 KB | +2 B | | languages/swift.min.js | 3.54 KB | 3.56 KB | +13 B |

[github-actions[bot]]

Build Size Report

Changes to minified artifacts in /build, after gzip compression.

5 files changed

Total change +23 B

View Changes

| file | base | pr | diff | | --- | --- | --- | --- | | es/core.min.js | 8.17 KB | 8.17 KB | -1 B | | es/highlight.min.js | 8.17 KB | 8.17 KB | -1 B | | es/languages/swift.min.js | 3.54 KB | 3.55 KB | +13 B | | highlight.min.js | 8.21 KB | 8.21 KB | -1 B | | languages/swift.min.js | 3.55 KB | 3.56 KB | +13 B |

[github-actions[bot]]

Build Size Report

Changes to minified artifacts in /build, after gzip compression.

2 files changed

Total change +26 B

View Changes

| file | base | pr | diff | | --- | --- | --- | --- | | es/languages/swift.min.js | 3.54 KB | 3.55 KB | +13 B | | languages/swift.min.js | 3.55 KB | 3.56 KB | +13 B |