You all probably know the syntax highlighting feature which also got a bug fix for FileMaker 14 yesterday.
So this is what the script workspace looks like for FileMaker 14 if you have an undefined variable:
As you see we have a variable $test7 which is not defined, so we show a red warning on the right side of the line.
We also show a notification:
The variable check needs to be enabled by the developer using the MBS( "SyntaxColoring.CheckVariableDeclaration.Enable" ) function call. The plugin will mark all variables as undefined which are not declared in a "Set Variable" script step.
PS: 5.2pr8 plugin is available later today.