From afe858ff2d42b0046958f08d591fea51d9c47031 Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Mon, 3 Sep 2018 16:00:54 -0700
Subject: [PATCH] tab complete aliases and improve io.dup efficiency

---
 .../loot/openos/lib/core/full_sh.lua          | 21 +++++++++----------
 .../opencomputers/loot/openos/lib/io.lua      | 20 +++++++++---------
 2 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_sh.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_sh.lua
index 9f4de610b..4d9baa99d 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_sh.lua
@@ -187,22 +187,21 @@ function sh.internal.glob(eword)
 end 
 
 function sh.getMatchingPrograms(baseName)
+  if not baseName or baseName == "" then return {} end
   local result = {}
   local result_keys = {} -- cache for fast value lookup
-  -- TODO only matching files with .lua extension for now, might want to
-  --      extend this to other extensions at some point? env var? file attrs?
-  if not baseName or #baseName == 0 then
-    baseName = "^(.*)%.lua$"
-  else
-    baseName = "^(" .. text.escapeMagic(baseName) .. ".*)%.lua$"
+  local function check(key)
+    if key:find(baseName, 1, true) == 1 and not result_keys[key] then
+      table.insert(result, key)
+      result_keys[key] = true
+    end
+  end
+  for alias in shell.aliases() do
+    check(alias)
   end
   for basePath in string.gmatch(os.getenv("PATH"), "[^:]+") do
     for file in fs.list(shell.resolve(basePath)) do
-      local match = file:match(baseName)
-      if match and not result_keys[match] then
-        table.insert(result, match)
-        result_keys[match] = true
-      end
+      check(file:gsub("%.lua$", ""))
     end
   end
   return result
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/io.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/io.lua
index 251616c21..5f3b59956 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/io.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/io.lua
@@ -108,17 +108,17 @@ function io.write(...)
   return io.output():write(...)
 end
 
+local dup_mt =   {__index = function(dfd, key)
+  if key == "close" or dfd._closed then dfd._closed = true return end
+  local fd_value = dfd.fd[key]
+  if type(fd_value) ~= "function" then return fd_value end
+  return function(_, ...)
+    return fd_value(dfd.fd, ...)
+  end
+end}
+
 function io.dup(fd)
-  return setmetatable({
-    close = function(self) self._closed = true end,
-  }, {__index = function(_, key)
-    local fd_value = fd[key]
-    if type(fd_value) ~= "function" then return fd_value end
-    return function(self, ...)
-      if self._closed then return nil, "closed stream" end
-      return fd_value(fd, ...)
-    end
-  end})
+  return setmetatable({fd=fd,_closed=false}, dup_mt)
 end
 
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