&&exists

Action:

Tests if a macro variable is defined. Syntax: &&exists(variableName)  where variableName is the macro variable whose existence is being checked. If the named variable exists, &&exists returns 1; otherwise, it returns 0.   A variable is deemed to "not exist" in these cases: It has not been defined since the Debugger Client was last started or restarted. It has been defined, but it was removed with the unset command. Examples: The following statement returns 0: echo &&exists("&neverSet")  The echo statement below returns 1: set &i = 666  echo &&exists("&i")  The echo statement below returns 0: unset &i  echo &&exists("&i")

Introduced:

Build 60