pango:layout-single-paragraph-mode (layout)

layout -- a pango:layout object
setting -- a boolean whether the Pango layout does not break paragraphs at paragraph separator characters

If setting is true, do not treat newlines and similar characters as paragraph separators. Instead, keep all text in a single paragraph, and display a glyph for paragraph separator characters. Used when you want to allow editing of newlines on a single text line.