From c538c151c7462ad0395ff2c15c5e11e89e362aa8 Mon Sep 17 00:00:00 2001
From: Striven <sg.striven@cutecat.club>
Date: Sat, 04 Apr 2026 19:47:16 +0000
Subject: [PATCH] Initial commit

---
 quartz/util/path.ts |   52 +++++++++++++++++++++++++++++++++++-----------------
 1 files changed, 35 insertions(+), 17 deletions(-)

diff --git a/quartz/util/path.ts b/quartz/util/path.ts
index d2409e1..b957701 100644
--- a/quartz/util/path.ts
+++ b/quartz/util/path.ts
@@ -1,8 +1,6 @@
 import { slug as slugAnchor } from "github-slugger"
 import type { Element as HastElement } from "hast"
-import rfdc from "rfdc"
-
-export const clone = rfdc()
+import { clone } from "./clone"
 
 // this file must be isomorphic so it can't use node libs (e.g. path)
 
@@ -39,7 +37,16 @@
 export function isRelativeURL(s: string): s is RelativeURL {
   const validStart = /^\.{1,2}/.test(s)
   const validEnding = !endsWith(s, "index")
-  return validStart && validEnding && ![".md", ".html"].includes(_getFileExtension(s) ?? "")
+  return validStart && validEnding && ![".md", ".html"].includes(getFileExtension(s) ?? "")
+}
+
+export function isAbsoluteURL(s: string): boolean {
+  try {
+    new URL(s)
+  } catch {
+    return false
+  }
+  return true
 }
 
 export function getFullSlug(window: Window): FullSlug {
@@ -64,7 +71,7 @@
 
 export function slugifyFilePath(fp: FilePath, excludeExt?: boolean): FullSlug {
   fp = stripSlashes(fp) as FilePath
-  let ext = _getFileExtension(fp)
+  let ext = getFileExtension(fp)
   const withoutFileExt = fp.replace(new RegExp(ext + "$"), "")
   if (excludeExt || [".md", ".html", undefined].includes(ext)) {
     ext = ""
@@ -183,15 +190,26 @@
 }
 
 export function joinSegments(...args: string[]): string {
-  return args
-    .filter((segment) => segment !== "")
-    .map((segment, index) =>
-      index === 0
-        ? // Deduplicate but not remove leading slashes for first segment
-          segment.replace(/\/+$/g, "").replace(/^\/\/+/g, "/")
-        : segment.replace(/^\/+|\/+$/g, ""),
-    )
+  if (args.length === 0) {
+    return ""
+  }
+
+  let joined = args
+    .filter((segment) => segment !== "" && segment !== "/")
+    .map((segment) => stripSlashes(segment))
     .join("/")
+
+  // if the first segment starts with a slash, add it back
+  if (args[0].startsWith("/")) {
+    joined = "/" + joined
+  }
+
+  // if the last segment is a folder, add a trailing slash
+  if (args[args.length - 1].endsWith("/")) {
+    joined = joined + "/"
+  }
+
+  return joined
 }
 
 export function getAllSegmentPrefixes(tags: string): string[] {
@@ -239,7 +257,7 @@
 }
 
 // path helpers
-function isFolderPath(fplike: string): boolean {
+export function isFolderPath(fplike: string): boolean {
   return (
     fplike.endsWith("/") ||
     endsWith(fplike, "index") ||
@@ -252,7 +270,7 @@
   return s === suffix || s.endsWith("/" + suffix)
 }
 
-function trimSuffix(s: string, suffix: string): string {
+export function trimSuffix(s: string, suffix: string): string {
   if (endsWith(s, suffix)) {
     s = s.slice(0, -suffix.length)
   }
@@ -264,10 +282,10 @@
 }
 
 function _hasFileExtension(s: string): boolean {
-  return _getFileExtension(s) !== undefined
+  return getFileExtension(s) !== undefined
 }
 
-function _getFileExtension(s: string): string | undefined {
+export function getFileExtension(s: string): string | undefined {
   return s.match(/\.[A-Za-z0-9]+$/)?.[0]
 }
 

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