string.find/match not working with v:Nick() players who have spaces in name

[xboxki]

Background:
I am new to Gmod Networking, I decided to make a simple hook (PlayerSay) command that uses networking. This command is supposed to
send pms to other players,

Problem:
My command works fine when the player you are trying to send the message to has no spaces involving their name but if someone joins
with a name like "john foo" and you !pm john foo message, string.find(string.lower(text), string.lower(v:Nick())) will not find the players nickname
sub-string within the text from the player, SIDE NOTE : I am also having trouble making the command work with ignoring case for the players
name EX: "John" will work but "john" will not, one Possible solution I had was to parse the text from the player as lower and also parsing the v:Nick() as lower as you can see with my code snippet above and my code blocks below.,but it was to no avail.

I have also tried using find.match() for the compare statement

what player types: !pm name text

Code:
serverside autorun:

util.AddNetworkString("PmCustomServer")

hook.Add("PlayerSay", "pmsystemCustom", function(ply, text, boolteam)

if(string.sub(string.lower(text), 1,3) == "!pm") then
local isFound = false
for k,v in pairs(player.GetAll()) do
if string.find(string.lower(text), string.lower(v:Nick()), 3) then
local plystart,plyend = string.find(text, v:Nick())
local message = string.sub(text, plyend+1)
local sender = ply:Nick()
net.Start("PmCustomServer")
net.WriteString(message)
net.WriteString(sender)
net.Send(v)
isFound = true
ply:ChatPrint("pm sent to"..v:Nick())
return ""
end
end
if isFound == false then
ply:ChatPrint("player not found")
return ""

end
end

end)

clientside autorun:
net.Receive("PmCustomServer", function(len)
local ply = LocalPlayer()
local message = net.ReadString()
local sender = net.ReadString()
ply:ChatPrint("PM: "..sender..": "..message)
end)

[Rubat]

https://wiki.garrysmod.com/page/string/find

Try setting the noPatterns parameter to true

[xboxki]

I just tried this, it does not seem to be affecting spaced names,
I'm wondering if I should have the user put " " around their name to simplify it or use the text the user puts in for the name, after !pm to
check if that sub string is occurring in only 1 v:Nick() and use the closest one that it finds itself in, that sounds like a better abstraction than what I'm trying to do.

i did just find out something about this script though.My second issue(SideNote) i was having
Whenever I make a pm to a person, lets just say Bot01, with correct casing, it sends them the pm,

but when i use the exact string of text, but change casing in any way ex(BOT01 || bot01) instead of chat printing "not a player", it
is giving me error nil value for my plyend variable (because i am trying to preform logic on it when making the local message variable)

local plystart,plyend = string.find(text, v:Nick()) I had to make this code this --->local plystart, plyend = string.find(string.lower(text), string.lower(v:Nick()))
because my first selection statement was checking lower on the two strings(text and v:Nick()), i had to continue that to my other selection statements otherwise it wouldn't find the same correlation because it only worked on the strings when lower was applied, this fixed my case sensitive issue, not the one i was addressing in the main forum post, I thought i would share this solution I found for my SideNote.

[Rubat]

local plystart,plyend = string.find(text, v:Nick())
i jumped the gun, firstly you are not lowering the strings here