Eta-reduce several calls to pcall

src/main/resources/assets/computercraft/lua/bios.lua

@@ -991,22 +991,19 @@ if fs.exists( ".settings" ) then
 end
 
 -- Run the shell
-local ok, err = pcall( function()
-    parallel.waitForAny(
-        function()
-            local sShell
-            if term.isColour() and settings.get( "bios.use_multishell" ) then
-                sShell = "rom/programs/advanced/multishell.lua"
-            else
-                sShell = "rom/programs/shell.lua"
-            end
-            os.run( {}, sShell )
-            os.run( {}, "rom/programs/shutdown.lua" )
-        end,
-        function()
-            rednet.run()
-        end )
-end )
+local ok, err = pcall(parallel.waitForAny,
+    function()
+        local sShell
+        if term.isColour() and settings.get( "bios.use_multishell" ) then
+            sShell = "rom/programs/advanced/multishell.lua"
+        else
+            sShell = "rom/programs/shell.lua"
+        end
+        os.run( {}, sShell )
+        os.run( {}, "rom/programs/shutdown.lua" )
+    end,
+    rednet.run
+)
 
 -- If the shell errored, let the user read it.
 term.redirect( term.native() )

src/main/resources/assets/computercraft/lua/rom/programs/lua.lua

@@ -10,7 +10,7 @@ local bRunning = true
 local tCommandHistory = {}
 local tEnv = {
     ["exit"] = setmetatable({}, {
-        __tostring = function() return "Call exit() to exit" end,
+        __tostring = function() return "Call exit() to exit." end,
         __call = function() bRunning = false end,
     }),
     ["_echo"] = function( ... )

src/main/resources/assets/computercraft/lua/rom/programs/rednet/chat.lua

@@ -105,8 +105,8 @@ if sCommand == "host" then
     end
 
     -- Handle messages
-    local ok, error = pcall( function()
-        parallel.waitForAny( function()
+    local ok, error = pcall(parallel.waitForAny,
+        function()
             while true do
                 local _, timer = os.pullEvent( "timer" )
                 local nUserID = tPingPongTimer[ timer ]
@@ -223,8 +223,8 @@ if sCommand == "host" then
                     end
                  end
             end
-        end )
-    end )
+        end
+   )
     if not ok then
         printError( error )
     end
@@ -332,8 +332,8 @@ elseif sCommand == "join" then
 
     drawTitle()
 
-    local ok, error = pcall( function()
-        parallel.waitForAny( function()
+    local ok, error = pcall(parallel.waitForAny,
+        function()
             while true do
                 local sEvent, timer = os.pullEvent()
                 if sEvent == "timer" then
@@ -402,8 +402,8 @@ elseif sCommand == "join" then
                     table.insert( tSendHistory, sChat )
                 end
             end
-        end )
-    end )
+        end
+    )
 
     -- Close the windows
     term.redirect( parentTerm )