What does it do?
It creates easy aliases for your commands. For example, if you need to create a weather script and want to match many words to one type of weather, this function will return:
- the word to send to the player, for example, if you type sun it'll send sunny.
- the weather type, in this case, clear.

Snippet

Code (Skript):

1.  
2. function alias(t: text, a: text) :: objects:
3.    set {_t::*} to split {_t} at "|"
4.    if {_t::*} is not set:
5.        set {_t::*} to {_t}
6.    loop {_t::*}:
7.        set {_s::*} to split loop-value at ","
8.        loop {_s::*}:
9.            loop-value-2 = {_a}
10.            return {_s::1} and {_s::2}
11.            stop loop
12.    return false
13.  

Usage
The usage is pretty simple:

Code (Skript):

1.  
2. set {_aliases::*} alias("[type you want to parse],[what to send],[word to match],[word to match]|[another type to be parsed],[what to send],[word to match],[word to match], "word to check""
3.  
4. # {_aliases::1} = object you want to parse
5. # {_aliases::2} = text you want to send to the player
6.  

You can keep going forever with the 'words to match'. Just add other commas..
[ ] are not needed.

If you didn't get it, here it is line by line:

Spoiler

Code (Skript):

1.  
2. alias("
3. [type to be parsed] - e.g. "creative"
4. [word to send] - e.g. "fly 'n' duplication mode"
5. [word to match] - e.g. "1"
6. [word to match] - e.g. "fly plus hacks"
7. | - another word to match
8. [type to be parsed] - e.g. "survival"
9. [word to send] - e.g. "just die mode"
10. [word to match] - e.g. "0"
11. [word to match] - e.g. "not creative"
12. ")
13.  

Example:

Code (Skript):

1.  
2. command /weather [<text>]:
3.    aliases: clima, tempo, time
4.    permission: e.weather
5.    permission message: {@P}
6.    trigger:
7.        set {_weather::*} to alias("sunny,ensolarado,clear,limpo,claro,clear|rain,chuvoso,chuva,rainy|thunder,tespestade,storm,tempest,raios", "%arg 1%")
8.        if {_weather::*} is false: # False means that it didn't match anything.
9.            send "&3ⒸⓂⒹ &7That weather &cdoes not exist&7."
10.        else:
11.            set weather to {_weather::1} parsed as weather # Parses the first returned value
12.            send "&3ⒸⓂⒹ &7The weather has been changed to &a%{_weather::2}%&7." # Sends the second value
13.  

As you can see, instead of a huge code, I just had the work to write down the aliases basically.

Hope you enjoy!​