Error messages are suppressed unless the triggering message was direct or mentioning.

internet.lua

@@ -274,7 +274,7 @@ function internet.download_file (url, filename)
     if url:match '^file://' then
         local path  =  url:match '^file://(.+)$'
         os.execute('cp "'..path..'" "'..filename..'"')
-        return
+        return true
     end
 
     --local body, code, headers, status  =  generic_request(url)

main.lua

@@ -191,11 +191,11 @@ local function handle_message(bot, user, channel, message, is_fast_channel)
         end
         if message:match 'help' then
             bot:sendChat(channel, choose {
-		    'No manual entry for ro-bot',
+                'No manual entry for '..CONFIG.IRC_NICK,
                 '404',
                 'Jeg kan ikke hjælpe dig, desværre.',
                 'Du må selv finde ud af hvordan jeg virker.',
-		    'Jeg er ligesom et menneske; jeg kommer ikke med manual.'
+                'Jeg er ligesom et menneske; jeg kommer ikke med en manual.'
             })
             return '!BOT'
         elseif message:match 'shutdown' or message:match 'poweroff' then
@@ -253,10 +253,16 @@ local function handle_message(bot, user, channel, message, is_fast_channel)
     end
 end
 
+local function strip_whitespace (s)
+    assert(type(s) == 'string')
+    return s:gsub('%s+', ' '):gsub('^ ', ''):gsub(' $', '')
+end
+
 local DEBUG_CHANNEL = '#bot-test'
 
 bot:hook("OnChat", function(user, channel, message)
-    local is_fast_channel  =  user   == channel == DEBUG_CHANNEL
+    local is_fast_channel  =  (channel == DEBUG_CHANNEL)
+    message = strip_whitespace(message)
     if channel == CONFIG.IRC_NICK then
         channel = user.nick
         is_fast_channel = 'direct'
@@ -264,6 +270,8 @@ bot:hook("OnChat", function(user, channel, message)
     if message:match('^'..escape_pattern(CONFIG.IRC_NICK)..':%s*(.*)$') then
         message  =  message:match('^'..escape_pattern(CONFIG.IRC_NICK)..':%s*(.*)$')
         is_fast_channel = 'direct'
+    elseif message:match(escape_pattern(CONFIG.IRC_NICK)) then
+        is_fast_channel = 'mention'
     end
 
     io.write '...\r'; io.flush()
@@ -271,9 +279,10 @@ bot:hook("OnChat", function(user, channel, message)
 
     -- Handle error
     if not success then
-        io.write(("[ERROR]    [%s] %s: %s\n\n\t%s\n\n"):format(channel, user.nick, message, status))
+        if is_fast_channel == 'direct' or is_fast_channel == 'mention' then
             bot:sendChat(channel, ERROR_MSG[math.random(#ERROR_MSG)])
-        return
+        end
+        status, message  =  'ERROR', ('%s\n\n\t%s\n\n'):format(message, status)
     end
 
     -- Print status
@@ -308,7 +317,6 @@ local BOT_FAREWELL = {
     'Jeg keder mig.'
 }
 
-
 local function shutdown_memebot ()
     -- Leave channels
     for channel in pairs(ACTIVE_CHANNELS) do