Comparing two strings that are the same returns false

[YourChance]

Hello. I am currently working on a votemap command and came across a possible lua error?
I am comparing two strings, one is from the maps file and one is put in by the user.

The code is supposed to check if the map the user put in is available or not, however when comparing the two strings it always returns false.

This is the code for the command:
hook.Add("PlayerSay","votemaptest",function(ply,Str)
    local MSG = string.Split(Str," ")
    if MSG[1] ~= nil then MSG[1] = string.lower(MSG[1]) end

    if MSG[1] == "!votemap" or MSG[1] == "/votemap" or MSG[1] == ".votemap" or MSG[1] == "-votemap" then
        if MSG[2] ~= nil then
            local Fr = file.Read("map config/1 votemap maps.txt","LUA")
            if Fr ~= nil then
                local FoundMap = 0
                Fr = string.Split(Fr,"\n")
                for k,v in pairs(Fr) do
                    chat.BroadcastMSG("List: '"..string.lower(v).."' | UserInput: '"..string.lower(MSG[2]).."' > "..tostring(string.lower(v) == string.lower(MSG[2])))
                    chat.BroadcastMSG("List: is a.. "..type(v).." UserInput: is a.. "..type(MSG[2]))
                    if string.lower(v) == string.lower(MSG[2]) then
                        FoundMap = 1; break
                    end
                end

                if FoundMap == 0 then
                    ArgumentError(ply,"Invalid argument (2): The map you provided is not available"); return false
                else
                    VoteMap(MSG[2]); return true
                end
            end
        else
            ArgumentError(ply,"Missing argument (2): Map name"); return false
        end
    end
end)

This is the content of the maps file:
rp_industrial17_v1
gm_flatgrass
gm_construct
Test1
Test2
Test3
Test4
Test5
Test6
Test7
Test8
Test9
Test10

When entering the command "!votemap gm_flatgrass" this is what it returns:

https://cdn.discordapp.com/attachments/440241086980685824/460824036461510666/unknown.png

This is the string.Split table:

https://cdn.discordapp.com/attachments/440241086980685824/460824824948719636/unknown.png

I never had this issue before and i can't figure out what i am doing wrong here.

[c👌de_g🎷]

The strings must be different in some way. Try using string.byte to inspect the values of each character of the string to see where they differentiate. string.match will have some false positives if you have something like string.match("gm_flatgrass_final2", "gm_flatgrass")

[YourChance]

Yeah i noticed that this method can have false positives, i changed the code to this:
local Fr = file.Read("map config/1 votemap maps.txt","LUA")
if string.match(Fr,"\""..string.lower(MSG[2]).."\"",1) then
--Votemap stuff
end
I have put the map names in the maps.txt in " characters to ensure there are no false positives, it also prevents inputs like 'm_flat'

[Nak]

My bet is that MSG[2] or v got the whole filename. As in:
"gm_flatgrass" == "gm_flatgrass.bsp"

You can remove it with something like:
local mapname = MSG[2]
--If mapname ends with .bsp
if string.match(mapname,".+.bsp$") then
--Remove the last 4 letters/symbols
mapname = string.sub(mapname,1,string.len(mapname)- 4)
end