Message Unknown Appearing in Valid JSL Code

mdawson69

Recently, I have noticed that JSL is reporting unknown message for valid code. Below is the latest example (unknown messages highlighted):

 

Names Default to Here(1);
Delete Symbols();

databaseFile = Pick File(
	"Select Music Collection File",
	"$DOCUMENTS",
	{"Music Collection|csv"},
	1,
	0
);

albumTable = Open(databaseFile);

albumTable << <FONT color="#FF0000">Delete Rows</FONT>(N Rows());
:Name("Artist/Album") << Set Name("Title");
:Single 2 << Set Name("CD Single");

:LP << Value Labels({0 = "False", 1 = "True"});
:EP << Value Labels({0 = "False", 1 = "True"});
:Single << Value Labels({0 = "False", 1 = "True"});
:Album << Value Labels({0 = "False", 1 = "True"});
:CD Single << Value Labels({0 = "False", 1 = "True"});
:Want << Value Labels({0 = "False", 1 = "True"});

albumTable << <FONT color="#FF0000">New Column</FONT>(
	"Artist Block",
	Character,
	Formula(If(:Format == "", :Title))
);

albumTable << <FONT color="#FF0000">New Column</FONT>(
	"Artist",
	Character,
	Formula(
		If(Row() != 1,
			If(:Artist Block == "",
				Lag(:Artist, 1),
				:Artist Block
			),
			:Artist Block
		)
	)
);

albumTable << <FONT color="#FF0000">Move Selected Columns</FONT>({"Artist"}, To First);
tableName = albumTable << <FONT color="#FF0000">Get Name</FONT>();

artistCategoryTable = albumTable << <FONT color="#FF0000">Subset</FONT>(
	Output Table("Artist Category " || tableName),
	Copy Formula(0),
	All Rows,
	Selected Columns Only(0)
);

Close(albumTable, NoSave);

artistRowFilter = artistCategoryTable << <FONT color="#FF0000">Data Filter</FONT>(
	Mode(Include(1)),
	Inverse(1),
	Add Filter(
		Columns(:Artist Block),
		Where(:Artist Block == "")
	),
	Invisible
);

artistCategoryTable << <FONT color="#FF0000">Delete Rows</FONT>;
artistCategoryTable << <FONT color="#FF0000">Delete Columns</FONT>(:Artist Block);

artistRowFilter << <FONT color="#FF0000">Clear</FONT>;
artistRowFilter << <FONT color="#FF0000">Delete</FONT>;

As in other scripts where I have seen this color coding, this script runs without issue. Any ideas on why valid JSL messages are being flagged as unknown?

DaveB

It looks like you have the "Color unknown object messages" preference turned on. You can find this setting in the "JSL formatting" group box in the Script Editor preference group.  Prior to running the script the albumTable variable has not been assigned so jmp is not aggressive in marking object messages as unknown.  When the script is run, albumTable is set equal to a table and then that table is closed.  At that point jmp can better determine which messages are valid and since a closed table cannot handle a "delete rows" message, the message will then be colored red.  Since evaluating objects and messages can be time consuming, JMP does not recheck every script everytime an variable is changed so you might need to reformat the script or else edit the line with the message to see the color update.