Chat: Add string.split

_en/players/chat.md

@@ -33,6 +33,8 @@ sending messages, intercepting messages, and registering chat commands.
 - [Sending Messages to Specific Players](#sending-messages-to-specific-players)
 - [Chat Commands](#chat-commands)
 - [Complex Subcommands](#complex-subcommands)
+  - [Using string.split](#using-stringsplit)
+  - [Using Lua patterns](#using-lua-patterns)
 - [Intercepting Messages](#intercepting-messages)
 
 ## Sending Messages to All Players
@@ -88,18 +90,45 @@ message to send to the user.
 
 ## Complex Subcommands
 
-It is often required to make complex chat commands, such as:
+It's common for chat commands to require multiple arguments, for example,
+`/team join <team_name>`. There are two ways
+of doing this, either using Minetest's string split or Lua patterns.
 
-* `/msg <to> <message>`
-* `/team join <teamname>`
-* `/team leave <teamname>`
-* `/team list`
 
-This is usually done using [Lua patterns](https://www.lua.org/pil/20.2.html).
+### Using string.split
-Patterns are a way of extracting stuff from text using rules.
+
+A string can be split up into words using `string.split(" ")`:
 
 ```lua
-local to, msg = string.match(param, "^([%a%d_-]+) (*+)$")
+local parts = param:split(" ")
+local cmd = parts[1]
+
+if cmd == "join" then
+    local team_name = parts[2]
+    team.join(name, team_name)
+    return true, "Joined team!"
+elseif cmd == "max_users" then
+    local team_name = parts[2]
+    local max_users = tonumber(parts[3])
+    if team_name and max_users then
+        return true, "Set max users of team " .. team_name .. " to " .. max_users
+    else
+        return false, "Usage: /team max_users <team_name> <number>`
+    end
+else
+    return false, "Command needed"
+end
+```
+
+
+### Using Lua patterns
+
+[Lua patterns](https://www.lua.org/pil/20.2.html) are a way of extracting stuff
+from text using rules. They're best suited for when there are arguments that can
+contain spaces or more control is needed on how parameters are captured.
+
+```lua
+local to, msg = param:match("^([%a%d_-]+) (*+)$")
 ```
 
 The above code implements `/msg <to> <message>`. Let's go through left to right:
@@ -123,13 +152,6 @@ Patterns would probably be the
 [lua-users.org tutorial](http://lua-users.org/wiki/PatternsTutorial)
 or the [PIL documentation](https://www.lua.org/pil/20.2.html).
 
-<p class="book_hide">
-	There is also a library written by the author of this book which can be used
-	to make complex chat commands without patterns called
-	<a href="https://gitlab.com/rubenwardy/ChatCmdBuilder">Chat Command Builder</a>.
-</p>
-
-
 ## Intercepting Messages
 
 To intercept a message, use register_on_chat_message:

_it/players/chat.md

@@ -30,7 +30,9 @@ Le mod possono interagire con la chat del giocatore, tra l'inviare messaggi, int
 - [Inviare messaggi a giocatori specifici](#inviare-messaggi-a-giocatori-specifici)
 - [Comandi](#comandi)
 - [Complex Subcommands](#complex-subcommands)
-- [Intercettare i messaggi](#interecettare-i-messaggi)
+  - [Using string.split](#using-stringsplit)
+  - [Using Lua patterns](#using-lua-patterns)
+- [Intercettare i messaggi](#intercettare-i-messaggi)
 
 ## Inviare messaggi a tutti i giocatori
 
@@ -79,17 +81,46 @@ I comandi ritornano un massimo di due valori, dove il primo è un booleano che i
 
 {% include notice.html notice=page.cmd_online %}
 
-## Sottocomandi complessi
 
-È spesso necessario creare dei comandi complessi, come per esempio:
+## Complex Subcommands
 
-* `/msg <a> <messaggio>`
+It's common for chat commands to require multiple arguments, for example,
-* `/team entra <nometeam>`
+`/team join <team_name>`. There are two ways
-* `/team esci <nometeam>`
+of doing this, either using Minetest's string split or Lua patterns.
-* `/team elenco`
+
+
+### Using string.split
+
+A string can be split up into words using `string.split(" ")`:
+
+```lua
+local parts = param:split(" ")
+local cmd = parts[1]
+
+if cmd == "join" then
+    local team_name = parts[2]
+    team.join(name, team_name)
+    return true, "Joined team!"
+elseif cmd == "max_users" then
+    local team_name = parts[2]
+    local max_users = tonumber(parts[3])
+    if team_name and max_users then
+        return true, "Set max users of team " .. team_name .. " to " .. max_users
+    else
+        return false, "Usage: /team max_users <team_name> <number>`
+    end
+else
+    return false, "Command needed"
+end
+```
+
+
+### Using Lua patterns
+
+[Lua patterns](https://www.lua.org/pil/20.2.html) are a way of extracting stuff
+from text using rules. They're best suited for when there are arguments that can
+contain spaces or more control is needed on how parameters are captured.
 
-Questo viene solitamente reso possibile dai [pattern di Lua](https://www.lua.org/pil/20.2.html).
-I pattern sono un modo di estrapolare "cose" dal testo usando delle regole ben precise.
 
 ```lua
 local a, msg = string.match(param, "^([%a%d_-]+) (*+)$")