From 221bd0229e46b13894cf515cfbb11f119d8470fd Mon Sep 17 00:00:00 2001
From: Ponali <ponali2k@gmail.com>
Date: Wed, 9 Jul 2025 16:17:35 +0200
Subject: [PATCH] v2.3.0 - Added functionality for Ctrl+Delete and
 Ctrl+Backspace

---
 argentum.cfg            |  2 +-
 halyde/core/boot.lua    |  2 +-
 halyde/core/termlib.lua | 51 +++++++++++++++++++++++++++++++----------
 3 files changed, 41 insertions(+), 14 deletions(-)

diff --git a/argentum.cfg b/argentum.cfg
index facf784..4491480 100644
--- a/argentum.cfg
+++ b/argentum.cfg
@@ -1,7 +1,7 @@
 local agcfg = {
   ["halyde"] = {
     ["maindir"] = "",
-    ["version"] = "2.2.0",
+    ["version"] = "2.3.0",
     ["description"] = "A universal, customizable and feature-packed operating system for OpenComputers.",
     ["directories"] = {
       "halyde/apps",
diff --git a/halyde/core/boot.lua b/halyde/core/boot.lua
index df9c279..c2650dc 100644
--- a/halyde/core/boot.lua
+++ b/halyde/core/boot.lua
@@ -1,7 +1,7 @@
 local loadfile = ...
 local filesystem = loadfile("/halyde/lib/filesystem.lua")(loadfile)
 
-_G._OSVERSION = "Halyde 2.2.0"
+_G._OSVERSION = "Halyde 2.3.0"
 _G._OSLOGO = ""
 local handle, tmpdata = filesystem.open("/halyde/config/oslogo.ans", "r"), nil
 repeat
diff --git a/halyde/core/termlib.lua b/halyde/core/termlib.lua
index 3a50011..a0a61c8 100644
--- a/halyde/core/termlib.lua
+++ b/halyde/core/termlib.lua
@@ -243,6 +243,11 @@ function _G.read(readHistoryType, prefix, defaultText, maxChars)
     historyIdx = #termlib.readHistory[readHistoryType]
   end
 
+  local function updateHistory()
+    if not readHistoryType then return end
+    termlib.readHistory[readHistoryType][historyIdx]=text
+  end
+
   local cur = unicode.len(text)+1
   if prefix then termlib.write(prefix) end
   local startX, startY = termlib.cursorPosX, termlib.cursorPosY
@@ -306,23 +311,45 @@ function _G.read(readHistoryType, prefix, defaultText, maxChars)
   local function isLetter(chr)
     return not string.find("\x09 :@-./_~?&=%+#",chr,1,true)
   end
-  local function nextCur(dir,chr)
-    local next = math.max(math.min(cur+dir,unicode.len(text)+1),1)
+  local function nextCur(dir,chr,icur)
+    if icur==nil then icur=cur end
+    local next = math.max(math.min(icur+dir,unicode.len(text)+1),1)
     if chr then return unicode.sub(text,next,next) end
     return next
   end
+  local function curAfterWord(dir)
+    local ncur = cur
+    while nextCur(dir,false,ncur)~=ncur and isLetter(nextCur(dir,true,ncur))==(dir==1) do
+      ncur=nextCur(dir,false,ncur)
+    end
+    while nextCur(dir,false,ncur)~=ncur and isLetter(nextCur(dir,true,ncur))==(dir==-1) do
+      ncur=nextCur(dir,false,ncur)
+    end
+    return ncur
+  end
   local function moveWord(dir)
     if nextCur(dir)==cur then return end
     set(curPos(cur),strDef(unicode.sub(text,cur,cur)," "),false)
-    while nextCur(dir)~=cur and isLetter(nextCur(dir,true))==(dir==1) do
-      cur=nextCur(dir)
-    end
-    while nextCur(dir)~=cur and isLetter(nextCur(dir,true))==(dir==-1) do
-      cur=nextCur(dir)
-    end
+    cur=curAfterWord(dir)
     set(curPos(cur),strDef(unicode.sub(text,cur,cur)," "),true)
     cursorBlink = true
   end
+  local function deleteWord(dir)
+    local after = curAfterWord(dir)
+    local lenb = unicode.wlen(text)
+    if dir==1 then
+      text=unicode.sub(text,1,cur-1)..unicode.sub(text,after)
+      set(curPos(cur+1),unicode.sub(text,cur+1)..string.rep(" ",lenb-unicode.wlen(text)+1),false)
+      set(curPos(cur),strDef(unicode.sub(text,cur,cur)," "),true)
+    else
+      text = unicode.sub(text,1,after-1)..unicode.sub(text,cur)
+      cur=after
+      set(curPos(cur+1),unicode.sub(text,cur+1)..string.rep(" ",lenb-unicode.wlen(text)+1),false)
+      set(curPos(cur),strDef(unicode.sub(text,cur,cur)," "),true)
+    end
+    updateHistory()
+    cursorBlink = true
+  end
   local function isLine(chr)
     return chr=="\n" or chr=="\r"
   end
@@ -339,10 +366,6 @@ function _G.read(readHistoryType, prefix, defaultText, maxChars)
     text=new
     set(curPos(cur)," ",true)
   end
-  local function updateHistory()
-    if not readHistoryType then return end
-    termlib.readHistory[readHistoryType][historyIdx]=text
-  end
 
   while true do
     local args = {event.pull("key_down", "clipboard", 0.5)}
@@ -366,6 +389,10 @@ function _G.read(readHistoryType, prefix, defaultText, maxChars)
         moveCur(-math.huge)
       elseif key=="end" then
         moveCur(math.huge)
+      elseif key=="back" and keyboard.ctrlDown then
+        deleteWord(-1)
+      elseif key=="delete" and keyboard.ctrlDown then
+        deleteWord(1)
       elseif key=="back" and cur>1 then
         text=unicode.sub(text,1,cur-2)..unicode.sub(text,cur)
         cur=cur-1