Hint function can now return tables and iterators

Returning table or iterator will display set of available completion options. When user will return table, he/she should also provide prompt function for (re)drawing prompt if one is used is his/her program

src/main/resources/assets/opencomputers/loot/OpenOS/lib/term.lua

@@ -101,7 +101,7 @@ function term.isAvailable()
   return component.isAvailable("gpu") and component.isAvailable("screen")
 end
 
-function term.read(history, dobreak, hint)
+function term.read(history, dobreak, hint, prompt)
   checkArg(1, history, "table", "nil")
   history = history or {}
   table.insert(history, "")
@@ -109,6 +109,10 @@ function term.read(history, dobreak, hint)
   local scrollX, scrollY = 0, #history - 1
   local cursorX = 1
 
+  if type(prompt) == "function" then
+    pcall(prompt)
+  end
+
   local function getCursor()
     return cursorX, 1 + scrollY
   end
@@ -252,8 +256,15 @@ function term.read(history, dobreak, hint)
     if type(after) == "string" then
       local _, cby = getCursor()
       history[cby] = after
+    elseif type(after) == "table" or type(after) == "function" then
+      term.write("\n")
+      for _, v in type(after) == "table" and pairs(after) or (function()return _,after end) do
+        term.write(name .. " ", true)
+      end
+      term.write("\n")
+      if type(prompt) == "function" then pcall(prompt)end
     end
-    redraw() --hint might have printed sth
+    redraw()
     ende()
   end