$instok
From Scriptwiki
Inserts token into the Nth position in text, even if it already exists in text.
$instok(text,token,N,C)
Note that you can specify a negative value for N.
Example
var %mytext This is my text var %mynewtext = $instok(%mytext, new, 4, 32) echo -a %mynewtext
This example would return This is my new text, as new was inserted in the 4th position.
The following example is a little bit more complex. It's about adding a number in a string in the correct position (e.g. sorting (insertsort))
var %mynumbers = 1,4,8,34,77,111,876 var %mynewnumber = 77 ; set %numbers to the count of numbers in %mynumbers var %i = 1, %numbers = $numtok(%mynumbers,44) while (%i <= %numbers) { ; check if the number at position %i is bigger than %mynewnumber if ($gettok(%mynumbers,%i,44) > %mynewnumber) { ; it is bigger, so put it at this position var %mynumbers = $instok(%mynumbers,%mynewnumber, %i, 44) ; stop the while loop, as we are done. break } inc %i ; if we are at the end, the number is obviously not inserted. Put it at the end, as it is bigger than every other. if (%i == %numbers) { var %mynumbers = $instok(%mynumbers,%mynewnumber, $calc(%i + 1), 44) } } ; echo the new string echo -a %mynumbers