Puranjay Savar Mattas
6e1ffb96fd
Convert from git submodule to plain vendored copy. No push access to upstream nodes-app/swift-markdown-engine meant our local fix commit (05c1720) was stranded and unreachable from any remote on fresh clones/CI. Vendoring as plain files folds it into normal repo history instead.
46 lines
1.3 KiB
Swift
46 lines
1.3 KiB
Swift
//
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// StrikethroughExtension.swift
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// MarkdownEngine
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//
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// Created by Luca Chen on 15.07.26.
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//
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// `~~text~~` strikethrough (GFM flavor) as an inline span extension. Not
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// registered by default — the core engine parses pure markdown; embedders
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// opt in via:
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//
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// configuration.extensions = [StrikethroughExtension()]
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//
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// Matches the formerly built-in semantics exactly, including the stricter
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// GFM-ish run handling: `~~a~~~` stays literal (the closer must not extend
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// into a longer `~` run), unlike highlight's tolerant `==abc===`.
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//
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import AppKit
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import Foundation
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public struct StrikethroughExtension: MarkdownExtension {
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/// Well-known id, referenced by the engine's formatting actions
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/// (context menu / `applyStrikethroughRequest` toggle).
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public static let identifier = "strikethrough"
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public init() {}
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public var id: String { Self.identifier }
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public var inline: InlineSyntax? {
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InlineSyntax(open: "~~", close: "~~", rejectsCloserRun: true)
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}
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public func contentAttributes(theme: MarkdownEditorTheme) -> [NSAttributedString.Key: Any] {
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[
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.strikethroughStyle: NSUnderlineStyle.single.rawValue,
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.strikethroughColor: theme.strikethroughColor,
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]
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}
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public func html(childrenHTML: String) -> String {
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"<del>\(childrenHTML)</del>"
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}
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}
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