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code
osetta
</pre>
=={{header|Vlang}}==
{{trans|AutoHotKey}}
Substring function argument in Vlang uses end position versus length in AHK.
<lang vlang>fn main() {
str := "abcdefghijklmnopqrstuvwxyz"
find_char := "q"
find_string := "pq"
n := 12
m := 5
// starting from n characters in and of m length
println(str.substr(n - 1, (n - 1) + m))
// starting from n characters in, up to the end of the string
println(str.substr(n - 1, str.len))
// whole string minus last character
println(str.substr(0, str.len - 1))
// starting from a known character within the string and of m length // returns nothing if not found
println(str.substr(str.index(find_char) or {return}, (str.index(find_char) or {return}) + m))
// starting from a known character within the string and of m length // returns nothing if not found
println(str.substr(str.index(find_string) or {return}, (str.index(find_string) or {return}) + m))
}</lang>
{{Out}}
<pre>
lmnop
lmnopqrstuvwxyz
abcdefghijklmnopqrstuvwxy
qrstu
pqrst
</pre>
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