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Add support for mask properties #25

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Add support for mask properties #25

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c776003
Add support for mask properties
bradly Nov 7, 2025
5b9cc34
Update last change date
bradly Nov 7, 2025
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11 changes: 10 additions & 1 deletion syntax/css.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
" Nikolai Weibull (Add CSS2 support)
" URL: https://github.com/vim-language-dept/css-syntax.vim
" Maintainer: Jay Sitter <jay@jaysitter.com>
" Last Change: 2024 Nov 12
" Last Change: 2025 Nov 07

" quit when a syntax file was already loaded
if !exists("main_syntax")
Expand Down Expand Up @@ -193,7 +193,14 @@ syn keyword cssBorderAttr contained thin thick medium

" box-decoration-break attributes
syn keyword cssBorderAttr contained clone slice

"------------------------------------------------
" CSS Masking Module Level 1
" https://www.w3.org/TR/css-masking-1/
syn match cssMaskProp contained "\<mask\(-\(image\|mode\|repeat\|position\|clip\|origin\|size\|composite\|type\)\)\=\>"
syn keyword cssMaskAttr contained none luminance alpha match-source
syn keyword cssMaskAttr contained add subtract intersect exclude
syn keyword cssMaskAttr contained fill-box stroke-box view-box no-clip

syn match cssBoxProp contained "\<padding\(-\(top\|right\|bottom\|left\)\)\=\>"
syn match cssBoxProp contained "\<margin\(-\(top\|right\|bottom\|left\)\)\=\>"
Expand Down Expand Up @@ -657,6 +664,8 @@ hi def link cssProp StorageClass
hi def link cssAttr Constant
hi def link cssUnitDecorators Number
hi def link cssNoise Noise
hi def link cssMaskProp cssProp
hi def link cssMaskAttr cssAttr

let b:current_syntax = "css"

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27 changes: 27 additions & 0 deletions test.css
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Expand Up @@ -343,3 +343,30 @@ and (max-device-width:1024px)
background-position-x: 20px;
background-position-y: 20px;
}

/* mask properties tests */
#mask-test {
mask: url('{!URLFOR($Resource.images)}/mask.png') no-repeat 50% 50% / contain, linear-gradient(black,transparent);
mask: none;
mask-image: url('{!URLFOR($Resource.images)}/mask.png'), linear-gradient(black, transparent);
mask-image: linear-gradient(black, transparent);
mask-mode: none;
mask-mode: alpha;
mask-mode: match-source;
mask-position: top;
mask-position: bottom;
mask-position: center;
mask-size: cover;
mask-repeat: repeat-x;
mask-origin: content-box;
mask-composite: add;
mask-composite: subtract;
mask-composite: intersect;
mask-composite: exclude;
mask-type: luminance;
mask-clip: padding-box;
mask-clip: fill-box;
mask-clip: stroke-box;
mask-clip: view-box;
mask-clip: no-clip;
}