const text/tabwriter.DiscardEmptyColumns

3 uses

	text/tabwriter (current package)
		tabwriter.go#L185: 	DiscardEmptyColumns
		tabwriter.go#L393: 		if discardable && b.flags&DiscardEmptyColumns != 0 {

	go/printer
		printer.go#L1390: 		twmode := tabwriter.DiscardEmptyColumns