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random ,TEXT ?

; random text into variable
; min lenght 1, mas lenght 10
; only lowercase (asc 97 to 122)

string := ""
Random, text_lenght, 1, 10
Loop, %text_lenght%
{
  Random, asc_code, 1, 26
  asc_code += 96 ; offset (lowercase letters)
  string .= Chr(asc_code)
}

MsgBox % "Variable 'string' contains: " string

:*:?r:: ; This is because eventually I want to make it an inline replacement not a msg box. I type question mark r and get the random string.
string := "" ; this is where the results of the loops get placed, yes?
Loop, 10 ; each cycle of the below represents the generation of a character, ok got that, so I want a random string 10 characters long
{
  Random, asc_code, 1, 26 ; Don't fully understand this either. I get random, and the 1 and 26 is a function of length (the alphabet) but I'm not clear on whats going on in relation to the next line.
  asc_code += 48 ; This works but it includes unusable characters, can this be made to fetch only from these ranges? 48-57 (the digits 0-9), 65-90 (uppercase A-Z), and 97-122 (lowercase a-z)
  string .= Chr(asc_code) ; So the contents of asc_code get placed here and it adds the result to the string above?
}

MsgBox % "Variable 'string' contains: " string ; pop up a box who's message is replaced by the things placed in the string by the loop. Also, how could the msg box be made copyable? Or how can I replace this with something like Send? So it turns ?r into the string?

return

MsgBox % "Variable 'string' contains: " string
Clipboard := string ; copy this variable to the clipboard so it can be pasted somewhere else

:*:?r:: ; This is because eventually I want to make it an inline replacement not a msg box. I type question mark r and get the random string.
string := "" ; this is where the results of the loops get placed, yes?
;--Yes and we want to make sure it starts blank
Loop, 10 ; each cycle of the below represents the generation of a character, ok got that, so I want a random string 10 characters long
;--and you can change that to the number of characters you want, or even 0 for 0 characters
{
  Random, asc_code, 0, 26 + 10 + 26 - 1 ;--This will now include a-z A-Z and 0-9
  If (asc_code <= 9) ;--A number
     asc_code += 48
  else If (asc_code > 9 && asc_code <= 35) ;Capital
     asc_code += 55
  else
      asc_code += 61
  string .= Chr(asc_code) ; So the contents of asc_code get placed here and it adds the result to the string above?
;--Yes.
}

SendInput, % string ;--This will send the new keys inplace of ?r
return