From b44a79eebaf1664512ef5ff4e3246b3a6a416ff4 Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Tue, 19 Dec 2023 19:40:59 +0000
Subject: [PATCH] fix: wikilinks should allow external links (closes #639)

---
 quartz/util/path.ts |   26 +++++++++++++-------------
 1 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/quartz/util/path.ts b/quartz/util/path.ts
index 19aa094..92cfabe 100644
--- a/quartz/util/path.ts
+++ b/quartz/util/path.ts
@@ -1,5 +1,5 @@
-import { slug } from "github-slugger"
-import type { ElementContent, Element as HastElement } from "hast"
+import { slug as slugAnchor } from "github-slugger"
+import type { Element as HastElement } from "hast"
 // this file must be isomorphic so it can't use node libs (e.g. path)
 
 export const QUARTZ = "quartz"
@@ -25,7 +25,7 @@
 /** Shouldn't be a relative path and shouldn't have `/index` as an ending or a file extension. It _can_ however have a trailing slash to indicate a folder path. */
 export type SimpleSlug = SlugLike<"simple">
 export function isSimpleSlug(s: string): s is SimpleSlug {
-  const validStart = !(s.startsWith(".") || s.startsWith("/"))
+  const validStart = !(s.startsWith(".") || (s.length > 1 && s.startsWith("/")))
   const validEnding = !(s.endsWith("/index") || s === "index")
   return validStart && !_containsForbiddenCharacters(s) && validEnding && !_hasFileExtension(s)
 }
@@ -43,6 +43,14 @@
   return res
 }
 
+function sluggify(s: string): string {
+  return s
+    .split("/")
+    .map((segment) => segment.replace(/\s/g, "-").replace(/%/g, "-percent").replace(/\?/g, "-q")) // slugify all segments
+    .join("/") // always use / as sep
+    .replace(/\/$/, "")
+}
+
 export function slugifyFilePath(fp: FilePath, excludeExt?: boolean): FullSlug {
   fp = _stripSlashes(fp) as FilePath
   let ext = _getFileExtension(fp)
@@ -51,11 +59,7 @@
     ext = ""
   }
 
-  let slug = withoutFileExt
-    .split("/")
-    .map((segment) => segment.replace(/\s/g, "-").replace(/%/g, "-percent").replace(/\?/g, "-q")) // slugify all segments
-    .join("/") // always use / as sep
-    .replace(/\/$/, "") // remove trailing slash
+  let slug = sluggify(withoutFileExt)
 
   // treat _index as index
   if (_endsWith(slug, "_index")) {
@@ -156,14 +160,10 @@
   return [fp, anchor]
 }
 
-export function slugAnchor(anchor: string) {
-  return slug(anchor)
-}
-
 export function slugTag(tag: string) {
   return tag
     .split("/")
-    .map((tagSegment) => slug(tagSegment))
+    .map((tagSegment) => sluggify(tagSegment))
     .join("/")
 }
 

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