input coloring

mac/Sources/Byre/Markdown.swift

@@ -7,9 +7,22 @@ indirect enum MDInline: Sendable {
     case em([MDInline])
     case image(src: String, alt: String)
     case link(href: String, [MDInline])
+    case mark(MDMark, [MDInline])
     case lineBreak
 }
 
+enum MDMark: Sendable {
+    case ok, warn, danger
+}
+
+private let marks: [String: MDMark] = [
+    "✓": .ok, "✔": .ok, "✔️": .ok, "✅": .ok, "☑": .ok, "☑️": .ok,
+    "~": .warn, "≈": .warn, "〜": .warn, "⚠": .warn, "⚠️": .warn, "🟡": .warn,
+    "x": .danger, "X": .danger, "×": .danger, "✗": .danger, "✘": .danger, "✕": .danger, "✖": .danger, "✖️": .danger, "❌": .danger,
+]
+
+private let boldWrap = Re(#"^(\*\*|__)(.*)\1$"#)
+
 struct MDItem: Sendable {
     var choice: String?
     var choiceIndex = 0
@@ -301,6 +314,14 @@ private func cells(_ line: String) -> [String] {
 }
 
 private func inline(_ src: String) -> [MDInline] {
+    let t = trimmed(src)
+    if let mark = marks[trimmed(boldWrap.exec(t)?[2] ?? t)] {
+        return [.mark(mark, spans(src))]
+    }
+    return spans(src)
+}
+
+private func spans(_ src: String) -> [MDInline] {
     var out: [MDInline] = []
     var rest = src
     while !rest.isEmpty {
@@ -314,13 +335,13 @@ private func inline(_ src: String) -> [MDInline] {
         if let code = g[1] {
             out.append(.code(code))
         } else if let strong = g[2] ?? g[3] {
-            out.append(.strong(inline(strong)))
+            out.append(.strong(spans(strong)))
         } else if let em = g[4] ?? g[5] {
-            out.append(.em(inline(em)))
+            out.append(.em(spans(em)))
         } else if let alt = g[6] {
             out.append(.image(src: trimmed(g[7] ?? g[8]!), alt: alt))
         } else if let text = g[9] {
-            out.append(.link(href: g[10]!, inline(text)))
+            out.append(.link(href: g[10]!, spans(text)))
         } else if let bare = g[11] {
             out.append(.link(href: bare, [.text(bare)]))
         }