The <() contains ()?> block can check whether a string is inside another string, but no block exists that returns the location of a substring within a string. This tutorial shows an algorithm that can do just this.
An example implementation can be found here.
Variables
The script uses two variables:
(buffer)stores a growing copy of the original string.(output)is the index where the substring is located. If it isn't found,(output)is set to 0.
Script
define find (substring) in (string)
if <(string) contains (substring)?> then
set [buffer v] to []
repeat until <(buffer) contains (substring)?>
set [buffer v] to (join (buffer) (letter ((length of (buffer)) + (1)) of (string)))
end
set [output v] to ((length of (buffer)) - (length of (substring)))
else
set [output v] to [0]
end
