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Changes: - BASH_SOURCE index was one off. - The first line of stacktrace was pure confusion displaying executed script together with innermost line number (which was either 125 when STACKTRACE or 229 when skip was called.) - We can safely ignore innermost call, as stack trace is always produced by stacktrace function. - It is safer to test for array length, instead of testing FUNCNAME is main - if main function were introduced. - Bashishm is safe to use as this function as a whole is relying on bash.