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 3fae5aeef..55860887e 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/edit.lua
@@ -684,4 +684,4 @@ while running do
 end
 
 term.clear()
-term.setCursorBlink(false)
+term.setCursorBlink(true)
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
index 9bb706eee..f5fde9c62 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
@@ -12,7 +12,8 @@ end
 
 shell.prime()
 local update_gpu = io.output().tty
-local interactive = io.input().tty
+local needs_profile = io.input().tty
+local input_handler = {hint = sh.hintHandler}
 
 if #args == 0 then
   while true do
@@ -20,15 +21,13 @@ if #args == 0 then
       while not tty.isAvailable() do
         event.pull("term_available")
       end
-      if interactive == true then -- first time run AND interactive
-        interactive = 0
-        tty.setReadHandler({hint = sh.hintHandler})
+      if needs_profile then -- first time run AND interactive
+        needs_profile = nil
         dofile("/etc/profile.lua")
       end
       io.write(sh.expand(os.getenv("PS1") or "$ "))
-      tty.setCursorBlink(true)
     end
-    local command = io.read()
+    local command = tty:read(input_handler)
     if command then
       command = text.trim(command)
       if command == "exit" then
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/tree.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/tree.lua
new file mode 100644
index 000000000..e831cee04
--- /dev/null
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/tree.lua
@@ -0,0 +1,321 @@
+local shell = require("shell")
+local fs = require("filesystem")
+local tx = require("transforms")
+local text = require("text")
+
+local args, opts = shell.parse(...)
+
+local function die(...)
+  io.stderr:write(...)
+  os.exit(1)
+end
+
+do -- handle cli
+  if opts.help then
+    print([[Usage: tree [OPTION]... [FILE]...
+  -a, --all             do not ignore entries starting with .
+      --full-time       with -l, print time in full iso format
+  -h, --human-readable  with -l, print human readable sizes
+      --si              likewise, but use powers of 1000 not 1024
+      --level=LEVEL     descend only LEVEL directories deep
+      --color=WHEN      WHEN can be
+                        auto - colorize output only if writing to a tty,
+                        always - always colorize output,
+                        never - never colorize output; (default: auto)
+  -l                    use a long listing format
+  -f                    print the full path prefix for each file
+  -i                    do not print indentation lines
+  -p                    append "/" indicator to directories
+  -Q, --quote           quote filenames with double quotes
+  -r, --reverse         reverse order while sorting
+  -S                    sort by file size
+  -t                    sort by modification type, newest first
+  -X                    sort alphabetically by entry extension
+  -C                    do not count files and directories
+  -R                    count root directories like other files
+      --help            print this help and exit]])
+    return 0
+  end
+
+  if #args == 0 then
+    table.insert(args, ".")
+  end
+
+  opts.level = tonumber(opts.level) or math.huge
+  if opts.level < 1 then
+    die("Invalid level, must be greater than 0")
+  end
+
+  opts.color = opts.color or "auto"
+  if opts.color == "auto" then
+    opts.color = io.stdout.tty and "always" or "never"
+  end
+
+  if opts.color ~= "always" and opts.color ~= "never" then
+    die("Invalid value for --color=WHEN option; WHEN should be auto, always or never")
+  end
+end
+
+local function peekable(iterator, state, var1)
+  local nextItem = {iterator(state, var1)}
+
+  return setmetatable({
+    peek = function()
+      return table.unpack(nextItem)
+    end
+  }, {
+    __call = coroutine.wrap(function()
+      while true do
+        local item = nextItem
+        nextItem = {iterator(state, nextItem[1])}
+        coroutine.yield(table.unpack(item))
+        if nextItem[1] == nil then break end
+      end
+    end)
+  })
+end
+
+local function filter(entry)
+  return opts.a or entry:sub(1, 1) ~= "."
+end
+
+local function stat(path)
+  local st = {}
+  st.path = path
+  st.name = fs.name(path) or "/"
+  st.sortName = st.name:gsub("^%.","")
+  st.time = fs.lastModified(path)
+  st.isLink = fs.isLink(path)
+  st.isDirectory = fs.isDirectory(path)
+  st.size = st.isLink and 0 or fs.size(path)
+  st.extension = st.name:match("(%.[^.]+)$") or ""
+  st.fs = fs.get(path)
+  return st
+end
+
+local colorize
+if opts.color == "always" then
+  -- from /lib/core/full_ls.lua
+  local colors = tx.foreach(text.split(os.getenv("LS_COLORS") or "", {":"}, true), function(e)
+    local parts = text.split(e, {"="}, true)
+    return parts[2], parts[1]
+  end)
+
+  function colorize(stat)
+    return stat.isLink and colors.ln or
+           stat.isDirectory and colors.di or
+           colors["*" .. stat.extension] or
+           colors.fi
+  end
+end
+
+local function list(path)
+  return coroutine.wrap(function()
+    local l = {}
+    for entry in fs.list(path) do
+      if filter(entry) then
+        table.insert(l, stat(fs.concat(path, entry)))
+      end
+    end
+
+    if opts.S then
+      table.sort(l, function(a, b)
+        return a.size < b.size
+      end)
+    elseif opts.t then
+      table.sort(l, function(a, b)
+        return a.time < b.time
+      end)
+    elseif opts.X then
+      table.sort(l, function(a, b)
+        return a.extension < b.extension
+      end)
+    else
+      table.sort(l, function(a, b)
+        return a.sortName < b.sortName
+      end)
+    end
+
+    for i = opts.r and #l or 1, opts.r and 1 or #l, opts.r and -1 or 1 do
+      coroutine.yield(l[i])
+    end
+  end)
+end
+
+local function digRoot(rootPath)
+  coroutine.yield(stat(rootPath), {})
+
+  if not fs.isDirectory(rootPath) then
+    return
+  end
+  local iterStack = {peekable(list(rootPath))}
+  local pathStack = {rootPath}
+  local levelStack = {not not iterStack[#iterStack]:peek()}
+
+
+  repeat
+    local entry = iterStack[#iterStack]()
+
+    if entry then
+      levelStack[#levelStack] = not not iterStack[#iterStack]:peek()
+
+      local path = fs.concat(fs.concat(table.unpack(pathStack)), entry.name)
+
+      coroutine.yield(entry, levelStack)
+
+      if entry.isDirectory and opts.level > #levelStack then
+        table.insert(iterStack, peekable(list(path)))
+        table.insert(pathStack, entry.name)
+        table.insert(levelStack, not not iterStack[#iterStack]:peek())
+      end
+    else
+      table.remove(iterStack)
+      table.remove(pathStack)
+      table.remove(levelStack)
+    end
+  until #iterStack == 0
+end
+
+local function dig(roots)
+  return coroutine.wrap(function()
+    for _, root in ipairs(roots) do
+      digRoot(root)
+    end
+  end)
+end
+
+local function nod(n)  -- from /lib/core/full_ls.lua
+  return n and (tostring(n):gsub("(%.[0-9]+)0+$","%1")) or "0"
+end
+
+local function formatFSize(size)  -- from /lib/core/full_ls.lua
+  if not opts.h and not opts["human-readable"] and not opts.si then
+    return tostring(size)
+  end
+
+  local sizes = {"", "K", "M", "G"}
+  local unit = 1
+  local power = opts.si and 1000 or 1024
+
+  while size > power and unit < #sizes do
+    unit = unit + 1
+    size = size / power
+  end
+
+  return nod(math.floor(size*10)/10)..sizes[unit]
+end
+
+local function pad(txt)  -- from /lib/core/full_ls.lua
+  txt = tostring(txt)
+  return #txt >= 2 and txt or "0" .. txt
+end
+
+local function formatTime(epochms)  -- from /lib/core/full_ls.lua
+  local month_names = {"January","February","March","April","May","June",
+     "July","August","September","October","November","December"}
+
+  if epochms == 0 then return "" end
+
+  local d = os.date("*t", epochms)
+  local day, hour, min, sec = nod(d.day), pad(nod(d.hour)), pad(nod(d.min)), pad(nod(d.sec))
+
+  if opts["full-time"] then
+    return string.format("%s-%s-%s %s:%s:%s ", d.year, pad(nod(d.month)), pad(day), hour, min, sec)
+  else
+    return string.format("%s %+2s %+2s:%+2s ", month_names[d.month]:sub(1,3), day, hour, pad(min))
+  end
+end
+
+local function writeEntry(entry, levelStack)
+  for i, hasNext in ipairs(levelStack) do
+    if opts.i then break end
+
+    if i == #levelStack then
+      if hasNext then
+        io.write("├── ")
+      else
+        io.write("└── ")
+      end
+    else
+      if hasNext then
+        io.write("│   ")
+      else
+        io.write("    ")
+      end
+    end
+  end
+
+  if opts.l then
+    io.write("[")
+
+    io.write(entry.isDirectory and "d" or entry.isLink and "l" or "f", "-")
+    io.write("r", entry.fs.isReadOnly() and "-" or "w", " ")
+
+    io.write(formatFSize(entry.size), " ")
+
+    io.write(formatTime(entry.time))
+    io.write("] ")
+  end
+
+  if opts.Q then io.write('"') end
+
+  if opts.color == "always" then
+    io.write("\27[" .. colorize(entry) .. "m")
+  end
+
+  if opts.f then
+    io.write(entry.path)
+  else
+    io.write(entry.name)
+  end
+
+  if opts.color == "always" then
+    io.write("\27[0m")
+  end
+
+  if opts.p and entry.isDirectory then
+    io.write("/")
+  end
+
+  if opts.Q then io.write('"') end
+  io.write("\n")
+end
+
+local function writeCount(dirs, files)
+  io.write("\n")
+  io.write(dirs, " director", dirs == 1 and "y" or "ies")
+  io.write(", ")
+  io.write(files, " file", files == 1 and "" or "s")
+  io.write("\n")
+end
+
+local dirs, files = 0, 0
+
+local roots = {}
+for _, arg in ipairs(args) do
+  local path = shell.resolve(arg)
+  local real, reason = fs.realPath(path)
+  if not real then
+    die("cannot access ", path, ": ", reason or "unknown error")
+  elseif not fs.exists(path) then
+    die("cannot access ", path, ":", "No such file or directory")
+  else
+    table.insert(roots, real)
+  end
+end
+
+for entry, levelStack in dig(roots) do
+  if opts.R or #levelStack > 0 then
+    if entry.isDirectory then
+      dirs = dirs + 1
+    else
+      files = files + 1
+    end
+  end
+  writeEntry(entry, levelStack)
+end
+
+if not opts.C then
+  writeCount(dirs, files)
+end
+
diff --git a/src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua b/src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua
index 8f8fecb2d..9fc3df6d1 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua
@@ -3,8 +3,11 @@ local tty = require("tty")
 local fs = require("filesystem")
 
 if tty.isAvailable() then
-  tty:write("\27[40m\27[37m")
-  tty.clear()
+  if io.stdout.tty then
+    io.write("\27[40m\27[37m")
+    tty.clear()
+  end
+  tty.setCursorBlink(true)
 end
 dofile("/etc/motd")
 
@@ -31,7 +34,7 @@ os.setenv("IFS", " ")
 os.setenv("MANPATH", "/usr/man:.")
 os.setenv("PAGER", "/bin/more")
 os.setenv("PS1", "\27[40m\27[31m$HOSTNAME$HOSTNAME_SEPARATOR$PWD # \27[37m")
-os.setenv("LS_COLORS", "{FILE=0xFFFFFF,DIR=0x66CCFF,LINK=0xFFAA00,['*.lua']=0x00FF00}")
+os.setenv("LS_COLORS", "di=0;36:fi=0:ln=0;33:*.lua=0;32")
 
 shell.setWorkingDirectory(os.getenv("HOME"))
 
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/01_hw.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/01_hw.lua
index 50e4a3147..8c8b8e231 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/01_hw.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/01_hw.lua
@@ -40,8 +40,8 @@ end
 function adapter_api.create_toggle(read, write, switch)
   return
   {
-    read = function() return tostring(read()) end,
-    write = function(value)
+    read = read and function() return tostring(read()) end,
+    write = write and function(value)
       value = text.trim(tostring(value))
       local on = value == "1" or value == "true"
       local off = value == "0" or value == "false"
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
index 5e7eb6bec..57e178153 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
@@ -2,6 +2,8 @@ local fs = require("filesystem")
 local shell = require("shell")
 local tty = require("tty")
 local unicode = require("unicode")
+local tx = require("transforms")
+local text = require("text")
 
 local dirsArg, ops = shell.parse(...)
 
@@ -32,7 +34,6 @@ if #dirsArg == 0 then
 end
 
 local ec = 0
-local gpu = tty.gpu()
 local fOut = tty.isAvailable() and io.output().tty
 local function perr(msg) io.stderr:write(msg,"\n") ec = 2 end
 local function stat(names, index)
@@ -56,42 +57,30 @@ local function stat(names, index)
   return info
 end
 local function toArray(i) local r={} for n in i do r[#r+1]=n end return r end
-local restore_color = function() end
 local set_color = function() end
-local prev_color
-local function colorize() return prev_color end
+local function colorize() return end
 if fOut and not ops["no-color"] then
-  local LSC = os.getenv("LS_COLORS")
-  if type(LSC) == "string" then
-    LSC = require("serialization").unserialize(LSC)
+  local LSC = tx.foreach(text.split(os.getenv("LS_COLORS") or "", {":"}, true), function(e)
+    local parts = text.split(e, {"="}, true)
+    return parts[2], parts[1]
+  end)
+  colorize = function(info)
+    return
+      info.isLink and LSC.ln or
+      info.isDir and LSC.di or
+      LSC['*'..info.ext] or
+      LSC.fi
   end
-  if not LSC then
-    perr("ls: unparsable value for LS_COLORS environment variable")
-  else
-    prev_color = gpu.getForeground()
-    restore_color = function() gpu.setForeground(prev_color) end
-    colorize = function(info)
-      return
-        info.isLink and LSC.LINK or
-        info.isDir and LSC.DIR or
-        LSC['*'..info.ext] or
-        LSC.FILE or
-        prev_color
-    end
-    set_color=function(c)
-      if gpu.getForeground() ~= c then
-        io.stdout:flush()
-        gpu.setForeground(c)
-      end
-    end
+  set_color=function(c)
+    io.write(string.char(0x1b), "[", c or "", "m")
   end
 end
 local msft={reports=0,proxies={}}
 function msft.report(files, dirs, used, proxy)
   local free = proxy.spaceTotal() - proxy.spaceUsed()
-  restore_color()
-  local pattern = "%5i File(s) %11i bytes\n%5i Dir(s)  %11s bytes free\n"
-  io.write(string.format(pattern, files, used, dirs, tostring(free)))
+  set_color()
+  local pattern = "%5i File(s) %s bytes\n%5i Dir(s)  %11s bytes free\n"
+  io.write(string.format(pattern, files, tostring(used), dirs, tostring(free)))
 end
 function msft.tail(names)
   local fsproxy = fs.get(names.path)
@@ -123,7 +112,7 @@ function msft.final()
   for proxy,report in pairs(msft.proxies) do
     table.insert(groups, {proxy=proxy,report=report})
   end
-  restore_color()
+  set_color()
   print("Total Files Listed:")
   for _,pair in ipairs(groups) do
     local proxy, report = pair.proxy, pair.report
@@ -263,7 +252,7 @@ local function display(names)
       local format = "%s-r%s %+"..tostring(max_size_width).."s %"..tostring(max_date_width).."s"
       local meta = string.format(format, file_type, write_mode, size, modDate)
       local item = info.name..link_target
-      return {{color = prev_color, name = meta}, {color = colorize(info), name = item}}
+      return {{name = meta}, {color = colorize(info), name = item}}
     end
   elseif ops["1"] or not fOut then
     lines.n = #names
@@ -332,7 +321,7 @@ local header = function() end
 if #dirsArg > 1 or ops.R then
   header = function(path)
     if not first_display then print() end
-    restore_color()
+    set_color()
     io.write(path,":\n")
   end
 end
@@ -366,11 +355,20 @@ for _,dir in ipairs(dirsArg) do
     table.insert(file_set, dir)
   end
 end
+
 io.output():setvbuf("line")
-if #file_set > 0 then display(sort(file_set)) end
-displayDirList(dir_set)
-msft.final()
+
+local ok, msg = pcall(function()
+  if #file_set > 0 then display(sort(file_set)) end
+  displayDirList(dir_set)
+  msft.final()
+end)
+
 io.output():flush()
 io.output():setvbuf("no")
-restore_color()
+set_color()
+
+assert(ok, msg)
+
 return ec
+
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
index 82f4dbe32..ad7997a63 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
@@ -68,7 +68,7 @@ local function findKeys(t, r, prefix, name)
   end
 end
 
-tty.setReadHandler({hint = function(line, index)
+local read_handler = {hint = function(line, index)
   line = (line or "")
   local tail = line:sub(index)
   line = line:sub(1, index - 1)
@@ -85,7 +85,7 @@ tty.setReadHandler({hint = function(line, index)
     table.insert(hints, key .. tail)
   end
   return hints
-end})
+end}
 
 io.write("\27[37m".._VERSION .. " Copyright (C) 1994-2017 Lua.org, PUC-Rio\n")
 io.write("\27[33mEnter a statement and hit enter to evaluate it.\n")
@@ -94,7 +94,7 @@ io.write("Press Ctrl+D to exit the interpreter.\n\27[37m")
 
 while tty.isAvailable() do
   io.write(env._PROMPT)
-  local command = io.read()
+  local command = tty:read(read_handler)
   if not command then -- eof
     return
   end
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua
index 2171f4279..2d6d7740d 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua
@@ -24,7 +24,6 @@ end
 local function saveConfig()
   local root = filesystem.get("/")
   if root and not root.isReadOnly() then
-    filesystem.makeDirectory("/etc")
     local f = filesystem.open("/etc/filesystem.cfg", "w")
     if f then
       f:write("autorun="..tostring(isAutorunEnabled))
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua
index 207c681c0..3ce1df9ff 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua
@@ -194,9 +194,6 @@ function term.write(value, wrap)
 end
 
 function term.read(history, dobreak, hint, pwchar, filter)
-  if not io.stdin.tty then
-    return io.read("*L")
-  end
   history = history or {}
   local handler = history
   handler.hint = handler.hint or hint
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
index e54531f24..b860dbb77 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
@@ -3,7 +3,6 @@ local event = require("event")
 local kb = require("keyboard")
 local component = require("component")
 local computer = require("computer")
-local process = require("process")
 local keys = kb.keys
 
 local tty = {}
@@ -19,11 +18,6 @@ tty.window =
 
 tty.internal = {}
 
-function tty.setReadHandler(handler)
-  checkArg(1, handler, "table")
-  process.info().data.handler = handler
-end
-
 function tty.key_down_handler(handler, cursor, char, code)
   local data = cursor.data
   local c = false
@@ -268,15 +262,17 @@ function tty.internal.build_vertical_reader()
 end
 
 -- read n bytes, n is unused
-function tty.read(_, handler, cursor)
+function tty.read(self, handler, cursor)
   checkArg(1, handler, "table", "number")
   checkArg(2, cursor, "table", "nil")
 
-  if type(handler) == "number" then
-    -- standard read as a stream, asking for n bytes
-    handler = process.info().data.handler or {}
+  if not io.stdin.tty or io.stdin.stream ~= self then
+    return io.stdin:readLine(false)
   end
 
+  if type(handler) ~= "table" then
+    handler = {}
+  end
   handler.index = 0
   cursor = cursor or tty.internal.build_vertical_reader()
 
@@ -324,7 +320,10 @@ function tty.setCursor(x, y)
   window.x, window.y = x, y
 end
 
-function tty.write(_, value)
+function tty.write(self, value)
+  if not io.stdout.tty or io.stdout.stream ~= self then
+    return io.write(value)
+  end
   local gpu = tty.gpu()
   if not gpu then
     return
@@ -352,7 +351,8 @@ function tty.write(_, value)
         value = window.ansi_escape:sub(5)
       end
       for _,catt in ipairs(color_attributes) do
-        local colors = {0x0,0xff0000,0x00ff00,0xffff00,0x0000ff,0xff00ff,0x00ffff,0xffffff}
+        -- B6 is closer to cyan in 4 bit color
+        local colors = {0x0,0xff0000,0x00ff00,0xffff00,0x0000ff,0xff00ff,0x00B6ff,0xffffff}
         catt = catt - 29
         local method = "setForeground"
         if catt > 10 then
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/vt100.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/vt100.lua
index f32488909..4e6111b50 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/vt100.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/vt100.lua
@@ -1,3 +1,4 @@
+local text = require("text")
 local vt100 = {}
 
 -- runs patterns on ansi until failure
@@ -25,15 +26,26 @@ local rules = {}
 -- [%d+;%d+;..%d+m
 rules[{"%[", "[%d;]*", "m"}] = function(_, _, number_text)
   local numbers = {}
-  number_text:gsub("[^;]*", function(num)
-    local n = tonumber(num) or 0
-    if n == 0 then
+  -- prefix and suffix ; act as reset
+  -- e.g. \27[41;m is actually 41 followed by a reset
+  number_text = ";" .. number_text:gsub("^;$","") .. ";"
+  local parts = text.split(number_text, {";"})
+  local last_was_break
+  for _,part in ipairs(parts) do
+    local num = tonumber(part)
+    if not num then
+      num = last_was_break and 0
+      last_was_break = true
+    else
+      last_was_break = false
+    end
+    if num == 0 then
       numbers[#numbers + 1] = 40
       numbers[#numbers + 1] = 37
-    else
-      numbers[#numbers + 1] = n
+    elseif num then
+      numbers[#numbers + 1] = num
     end
-  end)
+  end
   return numbers
 end
 
diff --git a/src/main/resources/assets/opencomputers/robot.names b/src/main/resources/assets/opencomputers/robot.names
index 27047dffa..1635f27cc 100644
--- a/src/main/resources/assets/opencomputers/robot.names
+++ b/src/main/resources/assets/opencomputers/robot.names
@@ -88,6 +88,7 @@ Robby              # Forbidden Planet
 Roomba             # Under your couch... wait.
 Rosie              # The Jetsons
 Shakey             # The first general-purpose mobile robot that could reason about its actions.
+SHODAN             # System Shock
 Skynet             # Terminator
 Space Core         # Portal
 SpiritedDusty      # Contributor
diff --git a/src/main/scala/li/cil/oc/client/renderer/markdown/segment/BasicTextSegment.scala b/src/main/scala/li/cil/oc/client/renderer/markdown/segment/BasicTextSegment.scala
index 07ad82e7a..365577fe4 100644
--- a/src/main/scala/li/cil/oc/client/renderer/markdown/segment/BasicTextSegment.scala
+++ b/src/main/scala/li/cil/oc/client/renderer/markdown/segment/BasicTextSegment.scala
@@ -1,7 +1,6 @@
 package li.cil.oc.client.renderer.markdown.segment
 
-import li.cil.oc.client.renderer.markdown.Document
-import li.cil.oc.client.renderer.markdown.MarkupFormat
+import li.cil.oc.client.renderer.markdown.{Document, MarkupFormat}
 import net.minecraft.client.gui.FontRenderer
 
 trait BasicTextSegment extends Segment {
@@ -58,11 +57,21 @@ trait BasicTextSegment extends Segment {
     while (pos < s.length) {
       pos += 1
       val width = stringWidth(s.take(pos), renderer)
-      if (width >= maxWidth) {
-        if (lastBreak > 0 || fullWidth <= maxLineWidth || s.exists(breaks.contains))
-          if (maxWidth == maxLineWidth && fullWidth == maxLineWidth && !s.exists(breaks.contains)) return s.length
-          else return lastBreak + 1
-        else return pos - 1
+      val exceedsLineLength = width >= maxWidth
+      if (exceedsLineLength) {
+        val mayUseFullLine = maxWidth == maxLineWidth
+        val canFitInLine = fullWidth <= maxLineWidth
+        val matchesFullLine = fullWidth == maxLineWidth
+        if (lastBreak >= 0) {
+          return lastBreak + 1 // Can do a soft split.
+        }
+        if (mayUseFullLine && matchesFullLine) {
+          return s.length // Special case for exact match.
+        }
+        if (canFitInLine && !mayUseFullLine) {
+          return 0 // Wrap line, use next line.
+        }
+        return pos - 1 // Gotta split hard.
       }
       if (pos < s.length && breaks.contains(s.charAt(pos))) lastBreak = pos
     }
diff --git a/src/main/scala/li/cil/oc/server/machine/luac/UnicodeAPI.scala b/src/main/scala/li/cil/oc/server/machine/luac/UnicodeAPI.scala
index 0be3f1ead..c327815c4 100644
--- a/src/main/scala/li/cil/oc/server/machine/luac/UnicodeAPI.scala
+++ b/src/main/scala/li/cil/oc/server/machine/luac/UnicodeAPI.scala
@@ -81,7 +81,7 @@ class UnicodeAPI(owner: NativeLuaArchitecture) extends NativeLuaAPI(owner) {
       var width = 0
       var end = 0
       while (width < count) {
-        width += FontUtils.wcwidth(value(end))
+        width += math.max(1, FontUtils.wcwidth(value(end)))
         end += 1
       }
       if (end > 1) lua.pushString(value.substring(0, end - 1))
diff --git a/src/main/scala/li/cil/oc/server/machine/luaj/UnicodeAPI.scala b/src/main/scala/li/cil/oc/server/machine/luaj/UnicodeAPI.scala
index b791210e1..2f008bddb 100644
--- a/src/main/scala/li/cil/oc/server/machine/luaj/UnicodeAPI.scala
+++ b/src/main/scala/li/cil/oc/server/machine/luaj/UnicodeAPI.scala
@@ -53,7 +53,7 @@ class UnicodeAPI(owner: LuaJLuaArchitecture) extends LuaJAPI(owner) {
       var width = 0
       var end = 0
       while (width < count) {
-        width += FontUtils.wcwidth(value(end))
+        width += math.max(1, FontUtils.wcwidth(value(end)))
         end += 1
       }
       if (end > 1) LuaValue.valueOf(value.substring(0, end - 1))