; Punctuation
"{" @punctuation.bracket
"}" @punctuation.bracket

; Keywords that introduce a tag form. The grammar exposes the opening
; sequence as a hidden node, so capture the parent and let the editor
; colour the leading {block:, {/block:, {lang: literally via the
; tokenizer. The colon delimiter inside a variable_prefix tag is captured
; below.
":" @punctuation.delimiter
"-" @punctuation.delimiter
"=" @operator

; Block names. Known data-block names get @function.builtin; If/IfNot
; toggles get @keyword.conditional (theme authors may define arbitrary
; If* / IfNot* names via <meta name="if:..."> so we match by prefix).
((block_name) @keyword.conditional
 (#match? @keyword.conditional "^[Ii]f([Nn]ot)?[A-Z]"))

((block_name) @function.builtin
 (#any-of? @function.builtin
  "Album" "AlbumArt" "Answer" "Answerer" "Aperture" "Artist" "AskEnabled"
  "Audio" "AudioEmbed" "AudioPlayer" "Author" "Camera" "Caption" "Chat"
  "ContentSource" "CurrentPage" "Date" "DayPage" "DayPagination"
  "Description" "Even" "Excerpt" "Exif" "Exposure" "ExternalAudio"
  "FeaturedTags" "FocalLength" "Followed" "Following" "GroupMember"
  "GroupMembers" "HasAvatar" "HasFeaturedTags" "HasPages" "HasPermalink"
  "HasTags" "HideAvatar" "HideDescription" "HideFromSearchEnabled"
  "HideHeaderImage" "HideTitle" "HighRes" "HomePage" "Host" "IndexPage"
  "IsActive" "IsDeactivated" "isOriginalEntry" "JumpPage" "Label"
  "LikeCount" "Likes" "Lines" "Link" "LinkURL" "More" "NewDayDate"
  "NextDayPage" "NextPage" "NextPost" "NoLikes" "NoSearchResults"
  "NoSourceLogo" "NoteCount" "NotReblog" "Odd" "Pages" "Pagination"
  "Panorama" "PermalinkPage" "PermalinkPagination" "Photo" "Photos"
  "Photoset" "PinnedPostLabel" "PlayCount" "Post5" "PostNotes" "Posts"
  "PostSummary" "PostTitle" "PreviousDayPage" "PreviousPage"
  "PreviousPost" "Quote" "ReblogCount" "RebloggedFrom" "Reblogs"
  "RelatedPosts" "ReplyCount" "SameDayDate" "SearchPage" "ShowAvatar"
  "ShowDescription" "ShowHeaderImage" "ShowTitle" "Source" "SourceLogo"
  "Submission" "SubmissionsEnabled" "TagPage" "Tags" "Text" "Thumbnail"
  "Title" "TrackName" "Video" "VideoThumbnail" "VideoThumbnails"))

(block_name) @function

; Variable names. Known builtins get @variable.builtin, others get @variable.
((variable_name) @variable.builtin
 (#any-of? @variable.builtin
  "AccentColor" "Album" "AlbumArtURL" "Alt" "AmPm" "Answer" "Answerer"
  "AnswererPortraitURL" "Aperture" "Artist" "Asker" "AskerPortraitURL"
  "AskLabel" "AudioEmbed" "AudioPlayer" "Author" "AvatarShape"
  "BackgroundColor" "Beats" "BlackLogoURL" "BlogURL" "Body" "Camera"
  "CapitalAmPm" "Caption" "CopyrightYears" "CurrentPage" "CustomCSS"
  "DayOfMonth" "DayOfMonthSuffix" "DayOfMonthWithZero" "DayOfWeek"
  "DayOfWeekNumber" "DayOfYear" "Description" "EmbedUrl" "Excerpt"
  "Exposure" "ExternalAudioURL" "Favicon" "FocalLength" "FollowedName"
  "FollowedPortraitURL" "FollowedTitle" "FollowedURL" "FormattedPlayCount"
  "GroupMemberName" "GroupMemberPortraitURL" "GroupMemberTitle"
  "GroupMemberURL" "HeaderImage" "Host" "JSDescription" "JSPhotosetLayout"
  "JSPlaintextDescription" "Label" "Length" "LikeButton" "LikeCount"
  "Likes" "Line" "LinkCloseTag" "LinkOpenTag" "LinkURL" "LogoHeight"
  "LogoWidth" "MetaDescription" "Minutes" "Month" "MonthNumber"
  "MonthNumberWithZero" "Name" "NextDayPage" "NextPage" "NextPost"
  "NoteCount" "NoteCountWithLabel" "NPF" "PageNumber" "Permalink"
  "PhotoAlt" "PhotoCount" "PhotoHeight" "Photoset" "PhotosetLayout"
  "PhotoURL" "PhotoWidth" "PinnedPostLabel" "PlaintextName" "PlayCount"
  "PlayCountWithLabel" "PortraitURL" "PostAuthorName"
  "PostAuthorPortraitURL" "PostAuthorTitle" "PostAuthorURL" "PostID"
  "PostNotes" "PostNotesURL" "PostSummary" "PostTitle" "PostType"
  "PreviousDayPage" "PreviousPage" "PreviousPost" "Question" "Quote"
  "RawAudioURL" "ReblogButton" "ReblogCount" "ReblogParentName"
  "ReblogParentPortraitURL" "ReblogParentTitle" "ReblogParentURL"
  "ReblogRootName" "ReblogRootPortraitURL" "ReblogRootTitle"
  "ReblogRootURL" "RelativePermalink" "Replies" "ReplyCount" "RSS"
  "SearchQuery" "SearchResultCount" "Seconds" "ShortDayOfWeek"
  "ShortMonth" "ShortURL" "ShortYear" "Source" "SourceTitle" "SourceURL"
  "SubmitLabel" "Submitter" "SubmitterPortraitURL" "SubmitterURL" "Tag"
  "TagsAsClasses" "TagURL" "TagURLChrono" "Target" "Thumbnail" "TimeAgo"
  "Timestamp" "Title" "TitleColor" "TitleFont" "TitleFontWeight"
  "TotalPages" "TrackName" "URL" "URLEncodedPermalink"
  "URLSafeSearchQuery" "URLSafeTag" "Username" "UserNumber" "Video"
  "VideoEmbed" "VideoThumbnailURL" "WeekOfYear" "Year"))

(variable_name) @variable

; Size suffix on URL-style variables. Numeric forms read as numbers,
; named forms (HighRes, Panorama, ...) as constants.
((variable_modifier) @number
 (#match? @number "^[0-9]+(sq)?$"))
(variable_modifier) @constant.builtin

; text: / color: / font: / image: prefix and its argument.
(variable_prefix) @keyword
(prefix_argument) @variable

; {lang:Translatable string}
(lang_tag) @string.special
(lang_text) @string

; Block attributes: {block:Photoset rows="3"}
(attribute_name) @attribute
(attribute_value) @string