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missing $ on line 77 - $Length

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Maybe just a zsh quirk? 

➜  ~ echo ${Variable:0:Length} 
zsh: unrecognized modifier
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kfrncs 2018-07-20 14:38:59 -04:00 committed by GitHub
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@ -74,7 +74,7 @@ echo ${Variable/Some/A} # => A string
# Substring from a variable
Length=7
echo ${Variable:0:Length} # => Some st
echo ${Variable:0:$Length} # => Some st
# This will return only the first 7 characters of the value
# Default value for variable