From d911c3af34b3505d12721da7d01b1e6ae9045501 Mon Sep 17 00:00:00 2001
From: Leonmmcoset <testmod@qq.com>
Date: Mon, 1 Sep 2025 11:11:23 +0800
Subject: [PATCH] =?UTF-8?q?refactor(shell):=20=E5=B0=86=E6=8E=A7=E5=88=B6?=
 =?UTF-8?q?=E5=8F=B0=E6=B8=85=E7=90=86=E9=80=BB=E8=BE=91=E7=A7=BB=E8=87=B3?=
 =?UTF-8?q?=E5=91=BD=E4=BB=A4=E6=89=A7=E8=A1=8C=E5=89=8D?=
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清理控制台的逻辑从循环开始处移动到命令执行前，避免每次循环都进行不必要的清理操作
---
 data/computercraft/lua/rom/programs/shell.lua | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/data/computercraft/lua/rom/programs/shell.lua b/data/computercraft/lua/rom/programs/shell.lua
index 6a5048b..c4f2bd8 100644
--- a/data/computercraft/lua/rom/programs/shell.lua
+++ b/data/computercraft/lua/rom/programs/shell.lua
@@ -81,15 +81,6 @@ end
 
 local history = {}
 while true do
-  -- 先清除控制台内容，但保留顶部应用栏
-  local w, h = term.getSize()
-  term.setTextColor(colors.white)
-  term.setBackgroundColor(colors.black)
-  for y=2, h do
-    term.at(1, y).clearLine()
-  end
-  term.at(1, 2)
-  
   term.setTextColor(colors.yellow)
   rc.write("$ "..shell.dir().." >>> ")
   term.setTextColor(colors.white)
@@ -97,6 +88,16 @@ while true do
   local text = term.read(nil, history, shell.complete)
   if #text > 0 then
     history[#history+1] = text
+    
+    -- 运行命令前先清除控制台内容，但保留顶部应用栏
+    local w, h = term.getSize()
+    term.setTextColor(colors.white)
+    term.setBackgroundColor(colors.black)
+    for y=2, h do
+      term.at(1, y).clearLine()
+    end
+    term.at(1, 2)
+    
     local ok, err = shell.run(text)
     if not ok and err then
       io.stderr:write("Application has a error when running and system has stop it. Error:\n", err, "\n")