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css-mode.el
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css-mode.el
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;;; css-mode.el --- Major mode to edit CSS files -*- lexical-binding: t -*-
;; Copyright (C) 2006-2021 Free Software Foundation, Inc.
;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
;; Maintainer: Simen Heggestøyl <simenheg@gmail.com>
;; Keywords: hypermedia
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Yet another CSS mode.
;;; Todo:
;; - filling code with auto-fill-mode
;; - fix font-lock errors with multi-line selectors
;;; Code:
(require 'cl-lib)
(require 'color)
(require 'eww)
(require 'imenu)
(require 'seq)
(require 'sgml-mode)
(require 'smie)
(require 'thingatpt)
(eval-when-compile (require 'subr-x))
(defgroup css nil
"Cascading Style Sheets (CSS) editing mode."
:group 'languages)
(defconst css-pseudo-class-ids
'("active" "checked" "default" "disabled" "empty" "enabled" "first"
"first-child" "first-of-type" "focus" "focus-within" "hover"
"in-range" "indeterminate" "invalid" "lang" "last-child"
"last-of-type" "left" "link" "not" "nth-child" "nth-last-child"
"nth-last-of-type" "nth-of-type" "only-child" "only-of-type"
"optional" "out-of-range" "read-only" "read-write" "required"
"right" "root" "scope" "target" "valid" "visited")
"Identifiers for pseudo-classes.")
(defconst css-pseudo-element-ids
'("after" "before" "first-letter" "first-line" "selection")
"Identifiers for pseudo-elements.")
(defconst css-at-ids
'("charset" "font-face" "import" "keyframes" "media" "namespace"
"page" "supports")
"Identifiers that appear in the form @foo.")
(defconst scss-at-ids
'("at-root" "content" "debug" "each" "else" "else if" "error" "extend"
"for" "function" "if" "import" "include" "mixin" "return" "use" "warn"
"while")
"Additional identifiers that appear in the form @foo in SCSS.")
(defvar-local css--at-ids css-at-ids
"List of at-rules for the current mode.")
(defconst css-bang-ids
'("important")
"Identifiers that appear in the form !foo.")
(defconst scss-bang-ids
'("default" "global" "optional")
"Additional identifiers that appear in the form !foo in SCSS.")
(defvar-local css--bang-ids css-bang-ids
"List of bang-rules for the current mode.")
(defconst css-descriptor-ids
'("ascent" "baseline" "bbox" "cap-height" "centerline" "definition-src"
"descent" "font-family" "font-size" "font-stretch" "font-style"
"font-variant" "font-weight" "mathline" "panose-1" "slope" "src" "stemh"
"stemv" "topline" "unicode-range" "units-per-em" "widths" "x-height")
"Identifiers for font descriptors.")
(defconst css-media-ids
'("all" "aural" "bitmap" "continuous" "grid" "paged" "static" "tactile"
"visual")
"Identifiers for types of media.")
(defconst css-property-alist
;; CSS 2.1 properties (https://www.w3.org/TR/CSS21/propidx.html).
;;
;; Properties duplicated by any of the CSS3 modules below have been
;; removed.
'(("azimuth" angle "left-side" "far-left" "left" "center-left"
"center" "center-right" "right" "far-right" "right-side" "behind"
"leftwards" "rightwards")
("border-collapse" "collapse" "separate")
("border-spacing" length)
("bottom" length percentage "auto")
("caption-side" "top" "bottom")
("clear" "none" "left" "right" "both")
("content" "normal" "none" string uri counter "attr()"
"open-quote" "close-quote" "no-open-quote" "no-close-quote")
("counter-increment" identifier integer "none")
("counter-reset" identifier integer "none")
("cue" cue-before cue-after)
("cue-after" uri "none")
("cue-before" uri "none")
("display" "inline" "block" "list-item" "inline-block" "table"
"inline-table" "table-row-group" "table-header-group"
"table-footer-group" "table-row" "table-column-group"
"table-column" "table-cell" "table-caption" "none"
;; CSS Flexible Box Layout Module Level 1
;; (https://www.w3.org/TR/css3-flexbox/#valdef-display-flex)
"flex" "inline-flex"
;; CSS Grid Layout Module Level 1
;; (https://www.w3.org/TR/css-grid-1/#grid-containers)
"grid" "inline-grid" "subgrid")
("elevation" angle "below" "level" "above" "higher" "lower")
("empty-cells" "show" "hide")
("float" "left" "right" "none")
("height" length percentage "auto")
("left" length percentage "auto")
("line-height" "normal" number length percentage)
("list-style" list-style-type list-style-position
list-style-image)
("list-style-image" uri "none")
("list-style-position" "inside" "outside")
("list-style-type" "disc" "circle" "square" "decimal"
"decimal-leading-zero" "lower-roman" "upper-roman" "lower-greek"
"lower-latin" "upper-latin" "armenian" "georgian" "lower-alpha"
"upper-alpha" "none")
("margin" margin-width)
("margin-bottom" margin-width)
("margin-left" margin-width)
("margin-right" margin-width)
("margin-top" margin-width)
("max-height" length percentage "none")
("max-width" length percentage "none")
("min-height" length percentage)
("min-width" length percentage)
("padding" padding-width)
("padding-bottom" padding-width)
("padding-left" padding-width)
("padding-right" padding-width)
("padding-top" padding-width)
("page-break-after" "auto" "always" "avoid" "left" "right")
("page-break-before" "auto" "always" "avoid" "left" "right")
("page-break-inside" "avoid" "auto")
("pause" time percentage)
("pause-after" time percentage)
("pause-before" time percentage)
("pitch" frequency "x-low" "low" "medium" "high" "x-high")
("pitch-range" number)
("play-during" uri "mix" "repeat" "auto" "none")
("position" "static" "relative" "absolute" "fixed")
("quotes" string "none")
("richness" number)
("right" length percentage "auto")
("speak" "normal" "none" "spell-out")
("speak-header" "once" "always")
("speak-numeral" "digits" "continuous")
("speak-punctuation" "code" "none")
("speech-rate" number "x-slow" "slow" "medium" "fast" "x-fast"
"faster" "slower")
("stress" number)
("table-layout" "auto" "fixed")
("top" length percentage "auto")
("vertical-align" "baseline" "sub" "super" "top" "text-top"
"middle" "bottom" "text-bottom" percentage length)
("visibility" "visible" "hidden" "collapse")
("voice-family" specific-voice generic-voice specific-voice
generic-voice)
("volume" number percentage "silent" "x-soft" "soft" "medium"
"loud" "x-loud")
("width" length percentage "auto")
("z-index" "auto" integer)
;; CSS Animations
;; (https://www.w3.org/TR/css3-animations/#property-index)
("animation" single-animation-name time single-timing-function
single-animation-iteration-count single-animation-direction
single-animation-fill-mode single-animation-play-state)
("animation-delay" time)
("animation-direction" single-animation-direction)
("animation-duration" time)
("animation-fill-mode" single-animation-fill-mode)
("animation-iteration-count" single-animation-iteration-count)
("animation-name" single-animation-name)
("animation-play-state" single-animation-play-state)
("animation-timing-function" single-timing-function)
;; CSS Backgrounds and Borders Module Level 3
;; (https://www.w3.org/TR/css3-background/#property-index)
("background" bg-layer final-bg-layer)
("background-attachment" attachment)
("background-clip" box)
("background-color" color)
("background-image" bg-image)
("background-origin" box)
("background-position" position)
("background-repeat" repeat-style)
("background-size" bg-size)
("border" line-width line-style color)
("border-bottom" line-width line-style color)
("border-bottom-color" color)
("border-bottom-left-radius" length percentage)
("border-bottom-right-radius" length percentage)
("border-bottom-style" line-style)
("border-bottom-width" line-width)
("border-color" color)
("border-image" border-image-source border-image-slice
border-image-width border-image-outset border-image-repeat)
("border-image-outset" length number)
("border-image-repeat" "stretch" "repeat" "round" "space")
("border-image-slice" number percentage "fill")
("border-image-source" "none" image)
("border-image-width" length percentage number "auto")
("border-left" line-width line-style color)
("border-left-color" color)
("border-left-style" line-style)
("border-left-width" line-width)
("border-radius" length percentage)
("border-right" line-width line-style color)
("border-right-color" color)
("border-right-style" line-style)
("border-right-width" line-width)
("border-style" line-style)
("border-top" line-width line-style color)
("border-top-color" color)
("border-top-left-radius" length percentage)
("border-top-right-radius" length percentage)
("border-top-style" line-style)
("border-top-width" line-width)
("border-width" line-width)
("box-shadow" "none" shadow)
;; CSS Basic User Interface Module Level 3 (CSS3 UI)
;; (https://www.w3.org/TR/css3-ui/#property-index)
("box-sizing" "content-box" "border-box")
("caret-color" "auto" color)
("cursor" uri x y "auto" "default" "none" "context-menu" "help"
"pointer" "progress" "wait" "cell" "crosshair" "text"
"vertical-text" "alias" "copy" "move" "no-drop" "not-allowed"
"grab" "grabbing" "e-resize" "n-resize" "ne-resize" "nw-resize"
"s-resize" "se-resize" "sw-resize" "w-resize" "ew-resize"
"ns-resize" "nesw-resize" "nwse-resize" "col-resize" "row-resize"
"all-scroll" "zoom-in" "zoom-out")
("nav-down" "auto" id "current" "root" target-name)
("nav-left" "auto" id "current" "root" target-name)
("nav-right" "auto" id "current" "root" target-name)
("nav-up" "auto" id "current" "root" target-name)
("outline" outline-color outline-style outline-width)
("outline-color" color "invert")
("outline-offset" length)
("outline-style" "auto" border-style)
("outline-width" border-width)
("resize" "none" "both" "horizontal" "vertical")
("text-overflow" "clip" "ellipsis" string)
;; CSS Color Module Level 3
;; (https://www.w3.org/TR/css3-color/#property)
("color" color)
("opacity" alphavalue)
;; CSS Containment Module Level 1
;; (https://www.w3.org/TR/css-contain-1/#property-index)
("contain" "none" "strict" "content" "size" "layout" "paint")
;; CSS Grid Layout Module Level 1
;; (https://www.w3.org/TR/css-grid-1/#property-index)
("grid" grid-template grid-template-rows "auto-flow" "dense"
grid-auto-columns grid-auto-rows grid-template-columns)
("grid-area" grid-line)
("grid-auto-columns" track-size)
("grid-auto-flow" "row" "column" "dense")
("grid-auto-rows" track-size)
("grid-column" grid-line)
("grid-column-end" grid-line)
("grid-column-gap" length-percentage)
("grid-column-start" grid-line)
("grid-gap" grid-row-gap grid-column-gap)
("grid-row" grid-line)
("grid-row-end" grid-line)
("grid-row-gap" length-percentage)
("grid-row-start" grid-line)
("grid-template" "none" grid-template-rows grid-template-columns
line-names string track-size line-names explicit-track-list)
("grid-template-areas" "none" string)
("grid-template-columns" "none" track-list auto-track-list)
("grid-template-rows" "none" track-list auto-track-list)
;; CSS Box Alignment Module Level 3
;; (https://www.w3.org/TR/css-align-3/#property-index)
("align-content"
baseline-position content-distibution overflow-position content-position)
("align-items"
"normal" "stretch" baseline-position overflow-position self-position)
("align-self"
"auto" "normal" "stretch"
baseline-position overflow-position self-position)
("justify-content" "normal"
content-distibution overflow-position content-position "left" "right")
("justify-items"
"normal" "stretch" baseline-position overflow-position self-position
"left" "right" "legacy")
("justify-self"
"auto" "normal" "stretch" baseline-position overflow-position self-position
"left" "right")
("place-content" align-content justify-content)
("place-items" align-items justify-items)
("place-self" justify-self align-self)
;; CSS Flexible Box Layout Module Level 1
;; (https://www.w3.org/TR/css-flexbox-1/#property-index)
("flex" "none" flex-grow flex-shrink flex-basis)
("flex-basis" "auto" "content" width)
("flex-direction" "row" "row-reverse" "column" "column-reverse")
("flex-flow" flex-direction flex-wrap)
("flex-grow" number)
("flex-shrink" number)
("flex-wrap" "nowrap" "wrap" "wrap-reverse")
("order" integer)
;; CSS Fonts Module Level 3
;; (https://www.w3.org/TR/css3-fonts/#property-index)
("font" font-style font-variant-css21 font-weight font-stretch
font-size line-height font-family "caption" "icon" "menu"
"message-box" "small-caption" "status-bar")
("font-family" family-name generic-family)
("font-feature-settings" "normal" feature-tag-value)
("font-kerning" "auto" "normal" "none")
("font-language-override" "normal" string)
("font-size" absolute-size relative-size length percentage)
("font-size-adjust" "none" number)
("font-stretch" "normal" "ultra-condensed" "extra-condensed"
"condensed" "semi-condensed" "semi-expanded" "expanded"
"extra-expanded" "ultra-expanded")
("font-style" "normal" "italic" "oblique")
("font-synthesis" "none" "weight" "style")
("font-variant" "normal" "none" common-lig-values
discretionary-lig-values historical-lig-values
contextual-alt-values "stylistic()" "historical-forms"
"styleset()" "character-variant()" "swash()" "ornaments()"
"annotation()" "small-caps" "all-small-caps" "petite-caps"
"all-petite-caps" "unicase" "titling-caps" numeric-figure-values
numeric-spacing-values numeric-fraction-values "ordinal"
"slashed-zero" east-asian-variant-values east-asian-width-values
"ruby")
("font-variant-alternates" "normal" "stylistic()"
"historical-forms" "styleset()" "character-variant()" "swash()"
"ornaments()" "annotation()")
("font-variant-caps" "normal" "small-caps" "all-small-caps"
"petite-caps" "all-petite-caps" "unicase" "titling-caps")
("font-variant-east-asian" "normal" east-asian-variant-values
east-asian-width-values "ruby")
("font-variant-ligatures" "normal" "none" common-lig-values
discretionary-lig-values historical-lig-values
contextual-alt-values)
("font-variant-numeric" "normal" numeric-figure-values
numeric-spacing-values numeric-fraction-values "ordinal"
"slashed-zero")
("font-variant-position" "normal" "sub" "super")
("font-weight" "normal" "bold" "bolder" "lighter" "100" "200"
"300" "400" "500" "600" "700" "800" "900")
;; CSS Fragmentation Module Level 3
;; (https://www.w3.org/TR/css-break-3/#property-index)
("box-decoration-break" "slice" "clone")
("break-after" "auto" "avoid" "avoid-page" "page" "left" "right"
"recto" "verso" "avoid-column" "column" "avoid-region" "region")
("break-before" "auto" "avoid" "avoid-page" "page" "left" "right"
"recto" "verso" "avoid-column" "column" "avoid-region" "region")
("break-inside" "auto" "avoid" "avoid-page" "avoid-column"
"avoid-region")
("orphans" integer)
("widows" integer)
;; CSS Masking Module Level 1
;; (https://www.w3.org/TR/css-masking-1/#property-index)
("clip-path" clip-source basic-shape geometry-box "none")
("clip-rule" "nonzero" "evenodd")
("mask-image" mask-reference)
("mask-mode" masking-mode)
("mask-repeat" repeat-style)
("mask-position" position)
("mask-clip" geometry-box "no-clip")
("mask-origin" geometry-box)
("mask-size" bg-size)
("mask-composite" compositing-operator)
("mask" mask-layer)
("mask-border-source" "none" image)
("mask-border-mode" "luminance" "alpha")
("mask-border-slice" number percentage "fill")
("mask-border-width" length percentage number "auto")
("mask-border-outset" length number)
("mask-border-repeat" "stretch" "repeat" "round" "space")
("mask-border" mask-border-source mask-border-slice
mask-border-width mask-border-outset mask-border-repeat
mask-border-mode)
("mask-type" "luminance" "alpha")
("clip" "rect()" "auto")
;; CSS Multi-column Layout Module
;; (https://www.w3.org/TR/css3-multicol/#property-index)
;; "break-after", "break-before", and "break-inside" are left out
;; below, because they're already included in CSS Fragmentation
;; Module Level 3.
("column-count" integer "auto")
("column-fill" "auto" "balance")
("column-gap" length "normal")
("column-rule" column-rule-width column-rule-style
column-rule-color "transparent")
("column-rule-color" color)
("column-rule-style" border-style)
("column-rule-width" border-width)
("column-span" "none" "all")
("column-width" length "auto")
("columns" column-width column-count)
;; CSS Overflow Module Level 3
;; (https://www.w3.org/TR/css-overflow-3/#property-index)
("max-lines" "none" integer)
("overflow" "visible" "hidden" "scroll" "auto" "paged-x" "paged-y"
"paged-x-controls" "paged-y-controls" "fragments")
("overflow-x" "visible" "hidden" "scroll" "auto" "paged-x"
"paged-y" "paged-x-controls" "paged-y-controls" "fragments")
("overflow-y" "visible" "hidden" "scroll" "auto" "paged-x"
"paged-y" "paged-x-controls" "paged-y-controls" "fragments")
;; CSS Text Decoration Module Level 3
;; (https://dev.w3.org/csswg/css-text-decor-3/#property-index)
("text-decoration" text-decoration-line text-decoration-style
text-decoration-color)
("text-decoration-color" color)
("text-decoration-line" "none" "underline" "overline"
"line-through" "blink")
("text-decoration-skip" "none" "objects" "spaces" "ink" "edges"
"box-decoration")
("text-decoration-style" "solid" "double" "dotted" "dashed"
"wavy")
("text-emphasis" text-emphasis-style text-emphasis-color)
("text-emphasis-color" color)
("text-emphasis-position" "over" "under" "right" "left")
("text-emphasis-style" "none" "filled" "open" "dot" "circle"
"double-circle" "triangle" "sesame" string)
("text-shadow" "none" length color)
("text-underline-position" "auto" "under" "left" "right")
;; CSS Text Module Level 3
;; (https://www.w3.org/TR/css3-text/#property-index)
("hanging-punctuation" "none" "first" "force-end" "allow-end"
"last")
("hyphens" "none" "manual" "auto")
("letter-spacing" "normal" length)
("line-break" "auto" "loose" "normal" "strict")
("overflow-wrap" "normal" "break-word")
("tab-size" integer length)
("text-align" "start" "end" "left" "right" "center" "justify"
"match-parent")
("text-align-last" "auto" "start" "end" "left" "right" "center"
"justify")
("text-indent" length percentage)
("text-justify" "auto" "none" "inter-word" "distribute")
("text-transform" "none" "capitalize" "uppercase" "lowercase"
"full-width")
("white-space" "normal" "pre" "nowrap" "pre-wrap" "pre-line")
("word-break" "normal" "keep-all" "break-all")
("word-spacing" "normal" length percentage)
("word-wrap" "normal" "break-word")
;; CSS Transforms Module Level 1
;; (https://www.w3.org/TR/css3-2d-transforms/#property-index)
("backface-visibility" "visible" "hidden")
("perspective" "none" length)
("perspective-origin" "left" "center" "right" "top" "bottom"
percentage length)
("transform" "none" transform-list)
("transform-origin" "left" "center" "right" "top" "bottom"
percentage length)
("transform-style" "flat" "preserve-3d")
;; CSS Transitions
;; (https://www.w3.org/TR/css3-transitions/#property-index)
("transition" single-transition)
("transition-delay" time)
("transition-duration" time)
("transition-property" "none" single-transition-property "all")
("transition-timing-function" single-transition-timing-function)
;; CSS Will Change Module Level 1
;; (https://www.w3.org/TR/css-will-change-1/#property-index)
("will-change" "auto" animateable-feature)
;; CSS Writing Modes Level 3
;; (https://www.w3.org/TR/css-writing-modes-3/#property-index)
;; "glyph-orientation-vertical" is obsolete and left out.
("direction" "ltr" "rtl")
("text-combine-upright" "none" "all")
("text-orientation" "mixed" "upright" "sideways")
("unicode-bidi" "normal" "embed" "isolate" "bidi-override"
"isolate-override" "plaintext")
("writing-mode" "horizontal-tb" "vertical-rl" "vertical-lr")
;; Filter Effects Module Level 1
;; (https://www.w3.org/TR/filter-effects/#property-index)
("color-interpolation-filters" "auto" "sRGB" "linearRGB")
("filter" "none" filter-function-list)
("flood-color" color)
("flood-opacity" number percentage)
("lighting-color" color)
;; Pointer Events
;; (https://www.w3.org/TR/pointerevents/#the-touch-action-css-property)
("touch-action" "auto" "none" "pan-x" "pan-y" "manipulation"))
"Identifiers for properties and their possible values.
The CAR of each entry is the name of a property, while the CDR is
a list of possible values for that property. String values in
the CDRs represent literal values, while symbols represent one of
the value classes found in `css-value-class-alist'. If a symbol
is not found in `css-value-class-alist', it's interpreted as a
reference back to one of the properties in this list. Some
symbols, such as `number' or `identifier', don't produce any
further value candidates, since that list would be infinite.")
(defconst css-property-ids
(mapcar #'car css-property-alist)
"Identifiers for properties.")
(defconst css--color-map
'(("black" . "#000000")
("silver" . "#c0c0c0")
("gray" . "#808080")
("white" . "#ffffff")
("maroon" . "#800000")
("red" . "#ff0000")
("purple" . "#800080")
("fuchsia" . "#ff00ff")
("magenta" . "#ff00ff")
("green" . "#008000")
("lime" . "#00ff00")
("olive" . "#808000")
("yellow" . "#ffff00")
("navy" . "#000080")
("blue" . "#0000ff")
("teal" . "#008080")
("aqua" . "#00ffff")
("cyan" . "#00ffff")
("orange" . "#ffa500")
("aliceblue" . "#f0f8ff")
("antiquewhite" . "#faebd7")
("aquamarine" . "#7fffd4")
("azure" . "#f0ffff")
("beige" . "#f5f5dc")
("bisque" . "#ffe4c4")
("blanchedalmond" . "#ffebcd")
("blueviolet" . "#8a2be2")
("brown" . "#a52a2a")
("burlywood" . "#deb887")
("cadetblue" . "#5f9ea0")
("chartreuse" . "#7fff00")
("chocolate" . "#d2691e")
("coral" . "#ff7f50")
("cornflowerblue" . "#6495ed")
("cornsilk" . "#fff8dc")
("crimson" . "#dc143c")
("darkblue" . "#00008b")
("darkcyan" . "#008b8b")
("darkgoldenrod" . "#b8860b")
("darkgray" . "#a9a9a9")
("darkgreen" . "#006400")
("darkgrey" . "#a9a9a9")
("darkkhaki" . "#bdb76b")
("darkmagenta" . "#8b008b")
("darkolivegreen" . "#556b2f")
("darkorange" . "#ff8c00")
("darkorchid" . "#9932cc")
("darkred" . "#8b0000")
("darksalmon" . "#e9967a")
("darkseagreen" . "#8fbc8f")
("darkslateblue" . "#483d8b")
("darkslategray" . "#2f4f4f")
("darkslategrey" . "#2f4f4f")
("darkturquoise" . "#00ced1")
("darkviolet" . "#9400d3")
("deeppink" . "#ff1493")
("deepskyblue" . "#00bfff")
("dimgray" . "#696969")
("dimgrey" . "#696969")
("dodgerblue" . "#1e90ff")
("firebrick" . "#b22222")
("floralwhite" . "#fffaf0")
("forestgreen" . "#228b22")
("gainsboro" . "#dcdcdc")
("ghostwhite" . "#f8f8ff")
("gold" . "#ffd700")
("goldenrod" . "#daa520")
("greenyellow" . "#adff2f")
("grey" . "#808080")
("honeydew" . "#f0fff0")
("hotpink" . "#ff69b4")
("indianred" . "#cd5c5c")
("indigo" . "#4b0082")
("ivory" . "#fffff0")
("khaki" . "#f0e68c")
("lavender" . "#e6e6fa")
("lavenderblush" . "#fff0f5")
("lawngreen" . "#7cfc00")
("lemonchiffon" . "#fffacd")
("lightblue" . "#add8e6")
("lightcoral" . "#f08080")
("lightcyan" . "#e0ffff")
("lightgoldenrodyellow" . "#fafad2")
("lightgray" . "#d3d3d3")
("lightgreen" . "#90ee90")
("lightgrey" . "#d3d3d3")
("lightpink" . "#ffb6c1")
("lightsalmon" . "#ffa07a")
("lightseagreen" . "#20b2aa")
("lightskyblue" . "#87cefa")
("lightslategray" . "#778899")
("lightslategrey" . "#778899")
("lightsteelblue" . "#b0c4de")
("lightyellow" . "#ffffe0")
("limegreen" . "#32cd32")
("linen" . "#faf0e6")
("mediumaquamarine" . "#66cdaa")
("mediumblue" . "#0000cd")
("mediumorchid" . "#ba55d3")
("mediumpurple" . "#9370db")
("mediumseagreen" . "#3cb371")
("mediumslateblue" . "#7b68ee")
("mediumspringgreen" . "#00fa9a")
("mediumturquoise" . "#48d1cc")
("mediumvioletred" . "#c71585")
("midnightblue" . "#191970")
("mintcream" . "#f5fffa")
("mistyrose" . "#ffe4e1")
("moccasin" . "#ffe4b5")
("navajowhite" . "#ffdead")
("oldlace" . "#fdf5e6")
("olivedrab" . "#6b8e23")
("orangered" . "#ff4500")
("orchid" . "#da70d6")
("palegoldenrod" . "#eee8aa")
("palegreen" . "#98fb98")
("paleturquoise" . "#afeeee")
("palevioletred" . "#db7093")
("papayawhip" . "#ffefd5")
("peachpuff" . "#ffdab9")
("peru" . "#cd853f")
("pink" . "#ffc0cb")
("plum" . "#dda0dd")
("powderblue" . "#b0e0e6")
("rosybrown" . "#bc8f8f")
("royalblue" . "#4169e1")
("saddlebrown" . "#8b4513")
("salmon" . "#fa8072")
("sandybrown" . "#f4a460")
("seagreen" . "#2e8b57")
("seashell" . "#fff5ee")
("sienna" . "#a0522d")
("skyblue" . "#87ceeb")
("slateblue" . "#6a5acd")
("slategray" . "#708090")
("slategrey" . "#708090")
("snow" . "#fffafa")
("springgreen" . "#00ff7f")
("steelblue" . "#4682b4")
("tan" . "#d2b48c")
("thistle" . "#d8bfd8")
("tomato" . "#ff6347")
("turquoise" . "#40e0d0")
("violet" . "#ee82ee")
("wheat" . "#f5deb3")
("whitesmoke" . "#f5f5f5")
("yellowgreen" . "#9acd32")
("rebeccapurple" . "#663399"))
"Map CSS named colors to their hex RGB value.")
(defconst css-value-class-alist
`((absolute-size
"xx-small" "x-small" "small" "medium" "large" "x-large"
"xx-large")
(alphavalue number)
(angle "calc()")
(animateable-feature "scroll-position" "contents" custom-ident)
(attachment "scroll" "fixed" "local")
(auto-repeat "repeat()")
(auto-track-list line-names fixed-size fixed-repeat auto-repeat)
(basic-shape "inset()" "circle()" "ellipse()" "polygon()")
(bg-image image "none")
(bg-layer bg-image position repeat-style attachment box)
(bg-size length percentage "auto" "cover" "contain")
(box "border-box" "padding-box" "content-box")
(clip-source uri)
(color
"rgb()" "rgba()" "hsl()" "hsla()" named-color "transparent"
"currentColor")
(common-lig-values "common-ligatures" "no-common-ligatures")
(compositing-operator "add" "subtract" "intersect" "exclude")
(contextual-alt-values "contextual" "no-contextual")
(counter "counter()" "counters()")
(discretionary-lig-values
"discretionary-ligatures" "no-discretionary-ligatures")
(east-asian-variant-values
"jis78" "jis83" "jis90" "jis04" "simplified" "traditional")
(east-asian-width-values "full-width" "proportional-width")
(explicit-track-list line-names track-size)
(family-name "Courier" "Helvetica" "Times")
(feature-tag-value string integer "on" "off")
(filter-function
"blur()" "brightness()" "contrast()" "drop-shadow()"
"grayscale()" "hue-rotate()" "invert()" "opacity()" "sepia()"
"saturate()")
(filter-function-list filter-function uri)
(final-bg-layer
bg-image position repeat-style attachment box color)
(fixed-breadth length-percentage)
(fixed-repeat "repeat()")
(fixed-size fixed-breadth "minmax()")
(font-variant-css21 "normal" "small-caps")
(frequency "calc()")
(generic-family
"serif" "sans-serif" "cursive" "fantasy" "monospace")
(generic-voice "male" "female" "child")
(geometry-box shape-box "fill-box" "stroke-box" "view-box")
(gradient
linear-gradient radial-gradient repeating-linear-gradient
repeating-radial-gradient)
(grid-line "auto" custom-ident integer "span")
(historical-lig-values
"historical-ligatures" "no-historical-ligatures")
(image uri image-list element-reference gradient)
(image-list "image()")
(inflexible-breadth length-percentage "min-content" "max-content"
"auto")
(integer "calc()")
(length "calc()" number)
(line-height "normal" number length percentage)
(line-names custom-ident)
(line-style
"none" "hidden" "dotted" "dashed" "solid" "double" "groove"
"ridge" "inset" "outset")
(line-width length "thin" "medium" "thick")
(linear-gradient "linear-gradient()")
(margin-width "auto" length percentage)
(mask-layer
mask-reference masking-mode position bg-size repeat-style
geometry-box "no-clip" compositing-operator)
(mask-reference "none" image mask-source)
(mask-source uri)
(masking-mode "alpha" "luminance" "auto")
(named-color . ,(mapcar #'car css--color-map))
(number "calc()")
(numeric-figure-values "lining-nums" "oldstyle-nums")
(numeric-fraction-values "diagonal-fractions" "stacked-fractions")
(numeric-spacing-values "proportional-nums" "tabular-nums")
(padding-width length percentage)
(position
"left" "center" "right" "top" "bottom" percentage length)
(baseline-position "left" "right" "baseline")
(content-distribution
"space-between" "space-around" "space-evenly" "stretch")
(overflow-position "unsafe" "safe")
(content-position "center" "start" "end" "flex-start" "flex-end")
(self-position
"center" "start" "end" "self-start" "self-end" "flex-start" "flex-end")
(radial-gradient "radial-gradient()")
(relative-size "larger" "smaller")
(repeat-style
"repeat-x" "repeat-y" "repeat" "space" "round" "no-repeat")
(repeating-linear-gradient "repeating-linear-gradient()")
(repeating-radial-gradient "repeating-radial-gradient()")
(shadow "inset" length color)
(shape-box box "margin-box")
(single-animation-direction
"normal" "reverse" "alternate" "alternate-reverse")
(single-animation-fill-mode "none" "forwards" "backwards" "both")
(single-animation-iteration-count "infinite" number)
(single-animation-name "none" identifier)
(single-animation-play-state "running" "paused")
(single-timing-function single-transition-timing-function)
(single-transition
"none" single-transition-property time
single-transition-timing-function)
(single-transition-property "all" identifier)
(single-transition-timing-function
"ease" "linear" "ease-in" "ease-out" "ease-in-out" "step-start"
"step-end" "steps()" "cubic-bezier()")
(specific-voice identifier)
(target-name string)
(time "calc()")
(track-breadth length-percentage flex "min-content" "max-content"
"auto")
(track-list line-names track-size track-repeat)
(track-repeat "repeat()")
(track-size track-breadth "minmax()" "fit-content()")
(transform-list
"matrix()" "translate()" "translateX()" "translateY()" "scale()"
"scaleX()" "scaleY()" "rotate()" "skew()" "skewX()" "skewY()"
"matrix3d()" "translate3d()" "translateZ()" "scale3d()"
"scaleZ()" "rotate3d()" "rotateX()" "rotateY()" "rotateZ()"
"perspective()")
(uri "url()")
(width length percentage "auto")
(x number)
(y number))
"Property value classes and their values.
The format is similar to that of `css-property-alist', except
that the CARs aren't actual CSS properties, but rather a name for
a class of values, and that symbols in the CDRs always refer to
other entries in this list, not to properties.
The following classes have been left out above because they
cannot be completed sensibly: `custom-ident',
`element-reference', `flex', `id', `identifier',
`length-percentage', `percentage', and `string'.")
(defcustom css-electric-keys '(?\} ?\;) ;; '()
"Self inserting keys which should trigger re-indentation."
:version "22.2"
:type '(repeat character)
:group 'css)
(defvar css-mode-syntax-table
(let ((st (make-syntax-table)))
;; C-style comments.
(modify-syntax-entry ?/ ". 14" st)
(modify-syntax-entry ?* ". 23b" st)
;; Strings.
(modify-syntax-entry ?\" "\"" st)
(modify-syntax-entry ?\' "\"" st)
;; Blocks.
(modify-syntax-entry ?\{ "(}" st)
(modify-syntax-entry ?\} "){" st)
;; Args in url(...) thingies and other "function calls".
(modify-syntax-entry ?\( "()" st)
(modify-syntax-entry ?\) ")(" st)
;; To match attributes in selectors.
(modify-syntax-entry ?\[ "(]" st)
(modify-syntax-entry ?\] ")[" st)
;; Special chars that sometimes come at the beginning of words.
;; We'll treat them as symbol constituents.
(modify-syntax-entry ?@ "_" st)
(modify-syntax-entry ?# "_" st)
(modify-syntax-entry ?. "_" st)
;; Distinction between words and symbols.
(modify-syntax-entry ?- "_" st)
(modify-syntax-entry ?! "." st)
(modify-syntax-entry ?$ "." st)
(modify-syntax-entry ?% "." st)
(modify-syntax-entry ?& "." st)
(modify-syntax-entry ?+ "." st)
(modify-syntax-entry ?, "." st)
(modify-syntax-entry ?< "." st)
(modify-syntax-entry ?> "." st)
(modify-syntax-entry ?= "." st)
(modify-syntax-entry ?? "." st)
st))
(defvar css-mode-map
(let ((map (make-sparse-keymap)))
(define-key map [remap info-lookup-symbol] 'css-lookup-symbol)
;; `info-complete-symbol' is not used.
(define-key map [remap complete-symbol] 'completion-at-point)
(define-key map "\C-c\C-f" 'css-cycle-color-format)
(easy-menu-define css-menu map "CSS mode menu"
'("CSS"
:help "CSS-specific features"
["Reformat block" fill-paragraph
:help "Reformat declaration block or fill comment at point"]
["Cycle color format" css-cycle-color-format
:help "Cycle color at point between different formats"]
"-"
["Describe symbol" css-lookup-symbol
:help "Display documentation for a CSS symbol"]
["Complete symbol" completion-at-point
:help "Complete symbol before point"]))
map)
"Keymap used in `css-mode'.")
(eval-and-compile
(defconst css--uri-re
(concat
"url\\((\\)[[:space:]]*\\(?:\\\\.\\|[^()[:space:]\n'\"]\\)+"
"[[:space:]]*\\()\\)")))
(defconst css-syntax-propertize-function
(syntax-propertize-rules
(css--uri-re (1 "|") (2 "|"))))
(defconst css-escapes-re
"\\\\\\(?:[^\000-\037\177]\\|[[:xdigit:]]+[ \n\t\r\f]?\\)")
(defconst css-nmchar-re (concat "\\(?:[-_[:alnum:]]\\|" css-escapes-re "\\)"))
(defconst css-nmstart-re (concat "\\(?:[[:alpha:]]\\|" css-escapes-re "\\)"))
(defconst css-ident-re ;; (concat css-nmstart-re css-nmchar-re "*")
;; Apparently, "at rules" names can start with a dash, e.g. @-moz-keyframes.
(concat css-nmchar-re "+"))
(defconst css-proprietary-nmstart-re ;; Vendor-specific properties.
(concat "[-_]" (regexp-opt '("ms" "moz" "o" "khtml" "webkit")) "-"))
(defconst css-name-re (concat css-nmchar-re "+"))
(defconst scss--hash-re "#\\(?:{[$-_[:alnum:]]+}\\|[[:alnum:]]+\\)")
(defface css-selector '((t :inherit font-lock-function-name-face))
"Face to use for selectors."
:group 'css)
(defface css-property '((t :inherit font-lock-keyword-face))
"Face to use for properties."
:group 'css)
(defface css-proprietary-property '((t :inherit (css-property italic)))
"Face to use for vendor-specific properties.")
(defun css--font-lock-keywords (&optional sassy)
`((,(concat "!\\s-*" (regexp-opt css--bang-ids))
(0 font-lock-builtin-face))
;; Atrules keywords. IDs not in css-at-ids are valid (ignored).
;; In fact the regexp should probably be
;; (,(concat "\\(@" css-ident-re "\\)\\([ \t\n][^;{]*\\)[;{]")
;; (1 font-lock-builtin-face))
;; Since "An at-rule consists of everything up to and including the next
;; semicolon (;) or the next block, whichever comes first."
(,(concat "@" css-ident-re) (0 font-lock-builtin-face))
;; Selectors.
;; Allow plain ":root" as a selector.
("^[ \t]*\\(:root\\)[\n \t]*{" (1 'css-selector keep))
;; FIXME: attribute selectors don't work well because they may contain
;; strings which have already been highlighted as f-l-string-face and
;; thus prevent this highlighting from being applied (actually now that
;; I use `keep' this should work better). But really the part of the
;; selector between [...] should simply not be highlighted.
(,(concat
"^[ \t]*\\("
(if (not sassy)
;; We don't allow / as first char, so as not to
;; take a comment as the beginning of a selector.
"[^@/:{}() \t\n][^:{}()]*"
;; Same as for non-sassy except we do want to allow { and }
;; chars in selectors in the case of #{$foo}
;; variable interpolation!
(concat "\\(?:" scss--hash-re
"\\|[^@/:{}() \t\n#]\\)"
"[^:{}()#]*\\(?:" scss--hash-re "[^:{}()#]*\\)*"))
;; Even though pseudo-elements should be prefixed by ::, a
;; single colon is accepted for backward compatibility.
"\\(?:\\(:" (regexp-opt (append css-pseudo-class-ids
css-pseudo-element-ids)
t)
"\\|::" (regexp-opt css-pseudo-element-ids t) "\\)"
"\\(?:([^)]+)\\)?"
(if (not sassy)
"[^:{}()\n]*"
(concat "[^:{}()\n#]*\\(?:" scss--hash-re "[^:{}()\n#]*\\)*"))
"\\)*"
"\\)\\(?:\n[ \t]*\\)*{")
(1 'css-selector keep))
;; In the above rule, we allow the open-brace to be on some subsequent
;; line. This will only work if we properly mark the intervening text
;; as being part of a multiline element (and even then, this only
;; ensures proper refontification, but not proper discovery).
("^[ \t]*{" (0 (save-excursion
(goto-char (match-beginning 0))
(skip-chars-backward " \n\t")
(put-text-property (point) (match-end 0)
'font-lock-multiline t)
;; No face.
nil)))
;; Variables.
(,(concat (rx symbol-start) "--" css-ident-re) (0 font-lock-variable-name-face))
;; Properties. Again, we don't limit ourselves to css-property-ids.
(,(concat "\\(?:[{;]\\|^\\)[ \t]*\\("
"\\(?:\\(" css-proprietary-nmstart-re "\\)\\|"
css-nmstart-re "\\)" css-nmchar-re "*"
"\\)\\s-*:")
(1 (if (match-end 2) 'css-proprietary-property 'css-property)))
;; Make sure the parens in a url(...) expression receive the
;; default face. This is done because the parens may sometimes
;; receive generic string delimiter syntax (see
;; `css-syntax-propertize-function').
(,css--uri-re
(1 'default t) (2 'default t))))
(defvar css-font-lock-keywords (css--font-lock-keywords))
(defvar css-font-lock-defaults
'(css-font-lock-keywords nil t))