Results:
- Total matches found: 84
- Filtered to actual tests: 10 files
- Directories classified: 1

WEB_FEATURES.yml files created:
1. ✅ dom/xslt/WEB_FEATURES.yml - Created with `files: '**'` (entire directory is XSLT tests)

Excluded:
- ❌ content-security-policy/xslt/ - Tests CSP, not XSLT specifically
- ❌ fetch/metadata/ - Tests fetch metadata, not XSLT specifically

Feature: xpath
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/xpath.yml

Results:
- Total matches found: 1,241
- Filtered to actual tests: 32 files
- Directories classified: 1

WEB_FEATURES.yml files created:
1. ✅ domxpath/WEB_FEATURES.yml - Created with files: '**' (entire directory is XPath tests)

Feature: xml-serializer
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/xml-serializer.yml

Results:
- Total matches found: 19
- Filtered to actual tests: 3 files
- Directories classified: 1

WEB_FEATURES.yml files created:
✅ domparsing/WEB_FEATURES.yml - 3 files

Excluded:
❌ css/filter-effects/ - Tests filter effects, just uses XMLSerializer as a utility
❌ html/dom/idlharness.https.html - IDL harness test
❌ workers/ - Tests worker properties, not XMLSerializer specifically
❌ interfaces/html.idl - IDL definition file

Feature: writing-mode-svg-values
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/writing-mode-svg-values.yml

Results:
Total matches found: 5,524
Filtered to actual tests: 8 files
Directories classified: 2

WEB_FEATURES.yml files created:
✅ css/css-writing-modes/WEB_FEATURES.yml - Single file: writing-mode-parsing-svg1-001.html
✅ svg/text/reftests/WEB_FEATURES.yml - 7 SVG reftest files

Excluded:
❌ Modern writing-mode values (horizontal-tb, vertical-rl, vertical-lr, sideways-rl, sideways-lr) - those are the standard writing-mode feature, not the deprecated SVG 1.1 values

Feature: writing-mode
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/writing-mode.yml

Results:
- Total matches found: 5,524
- Filtered for modern values: horizontal-tb, vertical-rl, vertical-lr, sideways-rl, sideways-lr
- Classified within css/css-writing-modes/ directory tree only
- Files classified: ~1,626 test files across 4 directories

WEB_FEATURES.yml files modified:
✅ css/css-writing-modes/WEB_FEATURES.yml - Main directory (1,530 files) using '*' pattern with negation for SVG values file
✅ css/css-writing-modes/forms/WEB_FEATURES.yml - Form controls (85 files)

WEB_FEATURES.yml files created:
✅ css/css-writing-modes/parsing/WEB_FEATURES.yml - Parsing tests (3 files) using 'writing-mode-*' pattern
✅ css/css-writing-modes/crashtests/WEB_FEATURES.yml - Crash tests (7 files) using '*' pattern

Feature: word-spacing
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/word-spacing.yml

Results:
- Total matches found: 584
- Filtered: 81 files
- Directories classified: 5

WEB_FEATURES.yml files created:
- ✅ css/CSS2/css1/WEB_FEATURES.yml - CSS1 word-spacing tests (2 files) using `'*word-sp*'` pattern
- ✅ css/CSS2/text/WEB_FEATURES.yml - CSS2 word-spacing tests (69 files) using `word-spacing-*` pattern
-  ✅ css/css-text/word-spacing/WEB_FEATURES.yml - Modern word-spacing tests (6 files) using `'*'` pattern
- ✅ svg/import/WEB_FEATURES.yml - SVG word-spacing test (1 file) - `text-spacing-01-b-manual.svg`

WEB_FEATURES.yml files modified:
-  ✅ css/css-text/parsing/WEB_FEATURES.yml - Parsing tests (3 files) using `word-spacing-*` pattern

Excluded:
❌ css/css-text/text-align/ - Tests text-align feature, not word-spacing
❌ css/css-text/tab-size/ - Tests tab-size feature
❌ css/css-transitions/ - Tests transitions, not word-spacing
❌ clipboard-apis/ - Tests clipboard APIs
❌ mathml/ - Tests MathML styling

Feature: word-break-break-word
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/word-break-break-word.yml

Note: This is the deprecated word-break: break-word value, now discouraged in favor of overflow-wrap: anywhere

Results:
- Total matches found: 271
- Filtered: 21 files

WEB_FEATURES.yml files created:
✅ css/css-text/word-break/WEB_FEATURES.yml - Word-break tests (9 files) using patterns: word-break-break-word-*, word-break-min-content-*

WEB_FEATURES.yml files modified:
✅ css/css-text/parsing/WEB_FEATURES.yml - Parsing tests (3 files) using word-break-* pattern
✅ css/css-text/white-space/WEB_FEATURES.yml - White-space interaction tests (9 files) - only files that use word-break: break-word CSS property and focus on testing word-break behavior

Excluded (75 files):
❌ css/css-text/white-space/ - Most files use overflow-wrap: break-word (different property) or test white-space/pre-wrap features primarily
❌ css/css-text/overflow-wrap/ - Tests overflow-wrap feature
❌ css/css-typed-om/ - Tests Typed OM APIs
❌ css/css-pseudo/parsing/ - Tests pseudo-element parsing

Feature: word-break-auto-phrase
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/word-break-auto-phrase.yml

Note: This feature enables automatic phrase-based wrapping for CJK languages (Chinese, Japanese, Korean)

Results:
- Total matches found: 84
- Filtered: 16 files

WEB_FEATURES.yml files created:
✅ css/css-text/word-break/auto-phrase/WEB_FEATURES.yml - Auto-phrase tests (16 files) using '*' pattern

Excluded (21 files):
❌ css/css-text/word-space-transform/ - Tests word-space-transform with auto-phrase value, not word-break: auto-phrase
❌ css/css-text/parsing/ - General word-break and word-space-transform parsing tests (not specific to auto-phrase)

Feature: word-break
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/word-break.yml

Note: This feature covers word-break: normal, break-all, and keep-all values. The word-break: break-word and word-break: auto-phrase values are separate features already classified.

Results:
- Total matches found: 731
- Filtered: 88 files

WEB_FEATURES.yml files updated:
✅ css/css-text/word-break/WEB_FEATURES.yml - Main word-break tests (79 files) using patterns for break-all, keep-all, normal, etc.
✅ css/css-text/parsing/WEB_FEATURES.yml - Parsing tests (3 files) using 'word-break-*' pattern
✅ css/css-text/line-break/WEB_FEATURES.yml - Interaction tests with line-break property (5 files)
✅ css/css-text/white-space/WEB_FEATURES.yml - Interaction test with white-space property (1 file)

Excluded (~643 files):
❌ css/css-text/word-break/word-break-break-word-* - Already classified as word-break-break-word feature (9 files)
❌ css/css-text/word-break/auto-phrase/ - Already classified as word-break-auto-phrase feature (17 files)
❌ css/css-text/white-space/ - Most files primarily test white-space property without help links to word-break (~40 files)
❌ css/css-text/overflow-wrap/ - Primary focus on overflow-wrap property (9 files)
❌ Other directories - Tests focused on writing-modes, hyphens, letter-spacing, etc. where word-break is incidental (~568 files)

Feature: z-index
Reference: https://github.com/web-platform-dx/web-features/blob/main/features/z-index.yml

Results:
- Total matches found: 1467
- Filtered: 57 files

WEB_FEATURES.yml files updated:
✅ css/CSS2/zindex/WEB_FEATURES.yml - Legacy CSS2 z-index tests (47 files) using '**' pattern
✅ css/CSS2/zorder/WEB_FEATURES.yml - Core z-index tests (2 files) using '**' pattern (changed from single file)
✅ css/css-position/WEB_FEATURES.yml - Modern z-index positioning tests (3 files) using '*z-index*' pattern
✅ css/css-position/parsing/WEB_FEATURES.yml - Z-index parsing tests (4 files) using 'z-index-*' pattern
✅ svg/render/order/WEB_FEATURES.yml - SVG z-index rendering test (1 file)

Removed mappings (11 files):
❌ css/css-pseudo/WEB_FEATURES.yml - Removed highlight-z-index-* (2 files) - Tests highlight pseudo-element z-index behavior, which is a separate feature
❌ css/css-transforms/WEB_FEATURES.yml - Removed z-index-does-not-apply.html (1 file) - Tests that z-index doesn't apply to non-positioned transformed elements, focuses on transforms not z-index
❌ css/css-transitions/animations/WEB_FEATURES.yml - Removed entire file (1 file) - Tests z-index interpolation/animation, not core z-index
❌ css/css-typed-om/the-stylepropertymap/properties/WEB_FEATURES.yml - Removed entire file (1 file) - Tests Typed OM API for z-index, not core z-index property
❌ css/css-will-change/WEB_FEATURES.yml - Removed entire file (4 files) - Tests will-change stacking context creation, not z-index feature
❌ css/css-display/run-in/WEB_FEATURES.yml - Removed entire file (1 file) - Tests deprecated run-in display value with z-index
❌ html/editing/dnd/draggable-areas/WEB_FEATURES.yml - Removed entire file (1 file) - Tests drag-and-drop with z-index styling

Excluded (~1410 files):
❌ css/CSS2/tables/ - Tests table layout with z-index used in styling (~231 files)
❌ css/css-text/white-space/ - Tests white-space property with z-index used for visual testing (~130 files)
❌ css/css-flexbox/ - Tests flexbox with z-index used in stacking (~93 files)
❌ css/css-grid/ - Tests grid layout with z-index used for layering (~140 files)
❌ css/css-writing-modes/ - Tests writing modes with z-index used in visual arrangement (~82 files)
❌ css/css-text/ - Tests various text properties with z-index in styling (~120 files)
❌ css/css-sizing/ - Tests sizing properties with z-index used for layout (~56 files)
❌ scroll-animations/ - Tests scroll animations with z-index for visual effects (~29 files)
❌ css/css-transforms/ - Tests transforms feature, not z-index (23 files)
❌ css/css-will-change/ - Tests will-change feature, not z-index (22 files)
❌ Other directories - Tests where z-index appears in styling or comments but isn't the focus (~506 files)