From 50688c76fd8df1cf1cdae3b06fd5d3756b678a85 Mon Sep 17 00:00:00 2001
From: FlintyLemming <admin@flinty.moe>
Date: Fri, 31 Jul 2026 04:56:41 -0700
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E7=A9=BA=E7=9B=AE=E5=BD=95?=
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macOS 自带的 BSD seq 在 first > last 时默认步长为 -1，所以空目录下
`seq (count $lines)` 即 `seq 0` 会输出 "1 0" 而非空，导致循环取到
$lines[0] 报 "array indices start at 1, not 0"（GNU seq 无此问题）。
循环前加空数组短路返回。

Co-Authored-By: Claude <noreply@anthropic.com>
---
 fish/add-on.fish | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fish/add-on.fish b/fish/add-on.fish
index afc4ea1..f366f59 100644
--- a/fish/add-on.fish
+++ b/fish/add-on.fish
@@ -111,6 +111,12 @@ function ls --description 'alias ls to eza with directory `.tldr` descriptions'
         return
     end
 
+    # 空目录直接返回：BSD seq（macOS）遇到 `seq 0` 会倒数输出 "1 0"，
+    # 导致下面用 $lines[0] 取值时报 "array indices start at 1"
+    if test (count $lines) -eq 0
+        return
+    end
+
     # 双路循环渲染
     for i in (seq (count $lines))
         set -l line $lines[$i]