From 8b63ff882ae28b1a1774293673a7531463d6a5e5 Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Wed, 23 Aug 2023 05:14:16 +0000
Subject: [PATCH] fix: tag support for non-latin alphabets (fixes #398)

---
 quartz/plugins/transformers/ofm.ts |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/quartz/plugins/transformers/ofm.ts b/quartz/plugins/transformers/ofm.ts
index b66ba85..bed6f62 100644
--- a/quartz/plugins/transformers/ofm.ts
+++ b/quartz/plugins/transformers/ofm.ts
@@ -116,7 +116,7 @@
 const calloutLineRegex = new RegExp(/^> *\[\!\w+\][+-]?.*$/, "gm")
 // (?:^| )   -> non-capturing group, tag should start be separated by a space or be the start of the line
 // #(\w+)    -> tag itself is # followed by a string of alpha-numeric characters
-const tagRegex = new RegExp(/(?:^| )#([\w-_\/]+)/, "g")
+const tagRegex = new RegExp(/(?:^| )#(\p{L}+)/, "gu")
 
 export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options> | undefined> = (
   userOpts,
@@ -382,8 +382,8 @@
         plugins.push(() => {
           return (tree: Root, file) => {
             const base = pathToRoot(file.data.slug!)
-            findAndReplace(tree, tagRegex, (value: string, tag: string) => {
-              if (file.data.frontmatter) {
+            findAndReplace(tree, tagRegex, (_value: string, tag: string) => {
+              if (file.data.frontmatter && !file.data.frontmatter.tags.includes(tag)) {
                 file.data.frontmatter.tags.push(tag)
               }
 
@@ -398,7 +398,7 @@
                 children: [
                   {
                     type: "text",
-                    value,
+                    value: `#${tag}`,
                   },
                 ],
               }

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