From e623e0fce62ccd03ce4ee657597486c1807b1ffb Mon Sep 17 00:00:00 2001
From: Ashour Badine <mclaren212@gmail.com>
Date: Sat, 17 Jan 2026 18:02:28 -0600
Subject: [PATCH] fix issue #5495: Tag parsing truncates emojis with variation
 selectors

---
 plugin/markdown/parser/tag.go      | 11 +++++++++++
 plugin/markdown/parser/tag_test.go | 12 ++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/plugin/markdown/parser/tag.go b/plugin/markdown/parser/tag.go
index 15dc9ca4c..59baadbcb 100644
--- a/plugin/markdown/parser/tag.go
+++ b/plugin/markdown/parser/tag.go
@@ -47,6 +47,17 @@ func isValidTagRune(r rune) bool {
 		return true
 	}
 
+	// Allow marks (non-spacing, spacing combining, enclosing)
+	// This covers variation selectors (e.g. VS16 \uFE0F) and combining marks (e.g. Keycap \u20E3, accents)
+	if unicode.IsMark(r) {
+		return true
+	}
+
+	// Allow Zero Width Joiner (ZWJ) for emoji sequences
+	if r == '\u200D' {
+		return true
+	}
+
 	// Allow specific ASCII symbols for tag structure
 	// Underscore: word separation (snake_case)
 	// Hyphen: word separation (kebab-case)
diff --git a/plugin/markdown/parser/tag_test.go b/plugin/markdown/parser/tag_test.go
index 6150c4487..817e27c3a 100644
--- a/plugin/markdown/parser/tag_test.go
+++ b/plugin/markdown/parser/tag_test.go
@@ -168,6 +168,18 @@ func TestTagParser(t *testing.T) {
 			expectedTag: "test🚀",
 			shouldParse: true,
 		},
+		{
+			name:        "emoji with VS16",
+			input:       "#test👁️", // Eye + VS16
+			expectedTag: "test👁️",
+			shouldParse: true,
+		},
+		{
+			name:        "emoji with ZWJ sequence",
+			input:       "#family👨‍👩‍👧‍👦", // Family ZWJ sequence
+			expectedTag: "family👨‍👩‍👧‍👦",
+			shouldParse: true,
+		},
 	}
 
 	for _, tt := range tests {