Username cachine and various fixes.

Usernames seen by the bot are now cached in the $usernames table. To get the ID associated with a
username, use the resolve_username() function from utilities.lua.
The table_size() function in utilities.lua will tell you the number of items in a key/pair table.
about.lua no longer displays a link preview in the about message.
currency.lua now accepts decimal arguments for the amount.
luarun.lua now correctly displays "false" return values.
moderation.lua will no longer send "I do not administrate this group".

plugins/about.lua

@@ -10,10 +10,10 @@ local action = function(msg)
 	local message = config.about_text .. '\nBased on otouto v'..version..' by topkecleon.\notouto v3 is licensed under the GPLv2.\ntopkecleon.github.io/otouto'
 
 	if msg.new_chat_participant and msg.new_chat_participant.id == bot.id then
-		sendMessage(msg.chat.id, message)
+		sendMessage(msg.chat.id, message, true)
 		return
 	elseif string.match(msg.text_lower, '^/about[@'..bot.username..']*') then
-		sendMessage(msg.chat.id, message)
+		sendMessage(msg.chat.id, message, true)
 		return
 	end
 

plugins/currency.lua

@@ -3,6 +3,7 @@ local doc = [[```
 /cash [amount] <from> to <to>
 Example: /cash 5 USD to EUR
 Returns exchange rates for various currencies.
+Source: Google Finance.
 ```]]
 
 local triggers = {
@@ -19,7 +20,8 @@ local action = function(msg)
 
 	local from = input:match('(%a%a%a) TO')
 	local to = input:match('TO (%a%a%a)')
-	local amount = input:match('([%d]+) %a%a%a TO %a%a%a') or 1
+	local amount = get_word(input, 2)
+	amount = tonumber(amount) or 1
 	local result = 1
 
 	local url = 'https://www.google.com/finance/converter'
@@ -39,12 +41,12 @@ local action = function(msg)
 			return
 		end
 
-		result = str:format('%.2f')
+		result = string.format('%.2f', str)
 
 	end
 
-	local output = amount .. ' ' .. from .. ' = ' .. result .. ' ' .. to .. '\n'
-	output = output .. os.date('!%F %T UTC')
+	local output = amount .. ' ' .. from .. ' = ' .. result .. ' ' .. to .. '\n\n'
+	output = output .. os.date('!%F %T UTC') .. '\nSource: Google Finance'
 	output = '`' .. output .. '`'
 
 	sendMessage(msg.chat.id, output, true, nil, true)

plugins/gSearch.lua

@@ -54,7 +54,7 @@ local action = function(msg)
 		return
 	end
 
-	local output = '*Google: Results for* _' .. input .. '_ *:*\n'
+	local output = '*Google results for* _' .. input .. '_ *:*\n'
 	for i,v in ipairs(jdat.responseData.results) do
 		local title = jdat.responseData.results[i].titleNoFormatting:gsub('%[.+%]', ''):gsub('&', '&')
 		if title:len() > 48 then

plugins/help.lua

@@ -9,7 +9,8 @@ for i,v in ipairs(plugins) do
 	end
 end
 
-help_text = help_text .. [[\n
+help_text = help_text .. [[
+
  /help <command>
 Arguments: <required> \[optional]
 ]]

plugins/luarun.lua

@@ -15,10 +15,12 @@ local action = function(msg)
 	end
 
 	local output = loadstring(input)()
-	if not output then
+	if output == nil then
 		output = 'Done!'
+	elseif type(output) == 'table' then
+		output = 'Done! Table returned.'
 	else
-		output = '```\n' .. output .. '\n```'
+		output = '```\n' .. tostring(output) .. '\n```'
 	end
 	sendMessage(msg.chat.id, output, true, msg.message_id, true)
 

plugins/moderation.lua

@@ -10,9 +10,7 @@ local commands = {
 
 	['^/modhelp[@'..bot.username..']*$'] = function(msg)
 
-		if not moddat[msg.chat.id_str] then
-			return config.errors.moderation
-		end
+		if not moddat[msg.chat.id_str] then return end
 
 		local message = [[
 			/modlist - List the moderators and administrators of this group.
@@ -33,9 +31,7 @@ local commands = {
 
 	['^/modlist[@'..bot.username..']*$'] = function(msg)
 
-		if not moddat[msg.chat.id_str] then
-			return config.errors.moderation
-		end
+		if not moddat[msg.chat.id_str] then return end
 
 		local message = ''
 
@@ -113,9 +109,7 @@ local commands = {
 
 	['^/modprom[@'..bot.username..']*$'] = function(msg)
 
-		if not moddat[msg.chat.id_str] then
-			return config.errors.moderation
-		end
+		if not moddat[msg.chat.id_str] then return end
 
 		if not config.moderation.admins[msg.from.id_str] then
 			return config.errors.not_admin
@@ -145,9 +139,7 @@ local commands = {
 
 	['^/moddem[@'..bot.username..']*'] = function(msg)
 
-		if not moddat[msg.chat.id_str] then
-			return config.errors.moderation
-		end
+		if not moddat[msg.chat.id_str] then return end
 
 		if not config.moderation.admins[msg.from.id_str] then
 			return config.errors.not_admin
@@ -181,9 +173,7 @@ local commands = {
 
 	['/modkick[@'..bot.username..']*'] = function(msg)
 
-		if not moddat[msg.chat.id_str] then
-			return config.errors.moderation
-		end
+		if not moddat[msg.chat.id_str] then return end
 
 		if not moddat[msg.chat.id_str][msg.from.id_str] then
 			if not config.moderation.admins[msg.from.id_str] then
@@ -215,9 +205,7 @@ local commands = {
 
 	['^/modban[@'..bot.username..']*'] = function(msg)
 
-		if not moddat[msg.chat.id_str] then
-			return config.errors.moderation
-		end
+		if not moddat[msg.chat.id_str] then return end
 
 		if not moddat[msg.chat.id_str][msg.from.id_str] then
 			if not config.moderation.admins[msg.from.id_str] then

plugins/reddit.lua

@@ -30,7 +30,7 @@ local action = function(msg)
 			source = '*/r/' .. input:match('^r/(.+)') .. '*\n'
 		else
 			url = 'http://www.reddit.com/search.json?q=' .. input .. '&limit=' .. limit
-			source = '*reddit: Results for* _' .. input .. '_ *:*\n'
+			source = '*reddit results for* _' .. input .. '_ *:*\n'
 		end
 	else
 		url = 'http://www.reddit.com/.json?limit=' .. limit