IFNSUBSTR - Branch to label if a substring not found in a master string

IFNSUBSTR Branch to label if a substring not found in a master string

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Syntax:	IFNSUBSTR	[ string ] [ substring ] goto [ label ]
Alt Syntax:	IFNSUBSTRI	[ string ] [ substring ] goto [ label ]
Arguments:	[ string ]	Variable or string defining master string.
	[ substring ]	Variable or string defining substring to find.
	[ label ]	A valid label within the current script file which is branched to if the substring is not contained within the master string.
Options:	none

This script command attempts to locate a substring with a specified master string and branches to [ label ] if it is not found.

Use the alternate IFNSUBSTRI command to perform the same comparison but to ignore case during the comparison.

Consider the following simple example that results in a branch to the specified label.

SET master_string = "abcdefg"

SET substring = "xyz"

IFNSUBSTR master_string substring goto substring_not_found