Whitespace is significant at line edges, in runs, and in tabs

All 14 scenarios hold

Significant means: any leading or trailing whitespace (on any line of a multiline value), any run of two or more spaces, any tab, and values aligned with pipes as in a formatted table row. A single space between words is not significant.

expected outcome broken scenario

Scenario	Value	Significant?
Plain word	Alice	false
Single internal space	Alice Smith	false
Leading space	x	true
Trailing space	x	true
Whitespace-only value		true
Empty string	“”	false
Tab between words	a b	true
Run of two spaces	a b	true
Pipe between words	a\|b	true
Formatted row with pipe	Alice \| 30	true
Multiline plain	ab\ncd	false
Space before newline	ab \ncd	true
Space after newline	ab\n cd	true
Null value		false