Renders the new comment tag on highlights.

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/types/Highlight.kt

@@ -75,6 +75,7 @@ fun RenderHighlight(
     val noteEvent = note.event as? HighlightEvent ?: return
 
     DisplayHighlight(
+        comment = noteEvent.comment(),
         highlight = noteEvent.quote(),
         context = noteEvent.context(),
         authorHex = noteEvent.pubKey,
@@ -93,6 +94,7 @@ fun RenderHighlight(
 @OptIn(ExperimentalLayoutApi::class)
 @Composable
 fun DisplayHighlight(
+    comment: String?,
     highlight: String,
     context: String?,
     authorHex: String?,
@@ -106,6 +108,21 @@ fun DisplayHighlight(
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
+    comment?.let {
+        TranslatableRichTextViewer(
+            content = it,
+            canPreview = canPreview && !makeItShort,
+            quotesLeft = quotesLeft,
+            modifier = Modifier.fillMaxWidth(),
+            tags = EmptyTagList,
+            backgroundColor = backgroundColor,
+            id = it,
+            callbackUri = null,
+            accountViewModel = accountViewModel,
+            nav = nav,
+        )
+    }
+
     val quote =
         remember {
             highlight.split("\n").joinToString("\n") { "> *${it.removeSuffix(" ")}*" }

quartz/src/main/java/com/vitorpamplona/quartz/nip84Highlights/HighlightEvent.kt

@@ -31,6 +31,7 @@ import com.vitorpamplona.quartz.nip01Core.tags.references.ReferenceTag
 import com.vitorpamplona.quartz.nip10Notes.BaseThreadedEvent
 import com.vitorpamplona.quartz.nip22Comments.RootScope
 import com.vitorpamplona.quartz.nip31Alts.AltTag
+import com.vitorpamplona.quartz.nip84Highlights.tags.CommentTag
 import com.vitorpamplona.quartz.nip84Highlights.tags.ContextTag
 import com.vitorpamplona.quartz.utils.TimeUtils
 
@@ -50,6 +51,8 @@ class HighlightEvent(
 
     fun quote() = content
 
+    fun comment() = tags.firstNotNullOfOrNull(CommentTag::parse)
+
     fun context() = tags.firstNotNullOfOrNull(ContextTag::parse)
 
     fun inPost() = firstTaggedATag()

quartz/src/main/java/com/vitorpamplona/quartz/nip84Highlights/tags/CommentTag.kt

@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2024 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.nip84Highlights.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+class CommentTag {
+    companion object {
+        const val TAG_NAME = "comment"
+
+        @JvmStatic
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        @JvmStatic
+        fun assemble(context: String) = arrayOf(TAG_NAME, context)
+    }
+}