From 571c618cfb8f5482c164c83a873750eeeb49937f Mon Sep 17 00:00:00 2001
From: kebufu <31839741+kebufu@users.noreply.github.com>
Date: Sat, 16 Jan 2021 21:37:52 +0800
Subject: [PATCH 1/2] support video ram buffer.

---
 .../assets/opencomputers/loot/openos/bin/edit.lua    | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
index 8ee9b2a34d..2872e2f8c6 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
@@ -33,6 +33,12 @@ elseif not fs.exists(filename) and readonly then
   return 1
 end
 
+local cursorX,cursorY=term.getCursor()
+local resX,resY=gpu.getResolution()
+local buff=gpu.allocateBuffer(resX,resY)
+gpu.setActiveBuffer(0)
+gpu.bitblt(1,1,1,resX,resY,0,1,1)
+
 local function loadConfig()
   -- Try to load user settings.
   local env = {}
@@ -51,7 +57,7 @@ local function loadConfig()
     pageUp = {{"pageUp"}},
     pageDown = {{"pageDown"}},
 
-    backspace = {{"back"}, {"shift", "back"}},
+    backspace = {{"back"}},
     delete = {{"delete"}},
     deleteLine = {{"control", "delete"}, {"shift", "delete"}},
     newline = {{"enter"}},
@@ -718,5 +724,7 @@ while running do
   end
 end
 
-term.clear()
+gpu.bitblt(0,1,1,resX,resY,1,1,1)
+gpu.freeBuffer(buff)
+term.setCursor(cursorX,cursorY)
 term.setCursorBlink(true)

From 24f1af488b0a1a98559a4d040941eda08b2126ce Mon Sep 17 00:00:00 2001
From: Minecraftku_hei <31839741+mckuhei@users.noreply.github.com>
Date: Fri, 8 Oct 2021 21:26:14 +0800
Subject: [PATCH 2/2] bug fix.

---
 .../resources/assets/opencomputers/loot/openos/bin/edit.lua | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
index 2872e2f8c6..5fe59dc02e 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
@@ -37,7 +37,7 @@ local cursorX,cursorY=term.getCursor()
 local resX,resY=gpu.getResolution()
 local buff=gpu.allocateBuffer(resX,resY)
 gpu.setActiveBuffer(0)
-gpu.bitblt(1,1,1,resX,resY,0,1,1)
+gpu.bitblt(buff,1,1,resX,resY,0,1,1)
 
 local function loadConfig()
   -- Try to load user settings.
@@ -57,7 +57,7 @@ local function loadConfig()
     pageUp = {{"pageUp"}},
     pageDown = {{"pageDown"}},
 
-    backspace = {{"back"}},
+    backspace = {{"back"}, {"shift", "back"}},
     delete = {{"delete"}},
     deleteLine = {{"control", "delete"}, {"shift", "delete"}},
     newline = {{"enter"}},
@@ -724,7 +724,7 @@ while running do
   end
 end
 
-gpu.bitblt(0,1,1,resX,resY,1,1,1)
+gpu.bitblt(0,1,1,resX,resY,buff,1,1)
 gpu.freeBuffer(buff)
 term.setCursor(cursorX,cursorY)
 term.setCursorBlink(true)