layout that begin with strong right-to-left characters
(Arabic and Hebrew principally), will have right-to-left
layout, paragraphs with letters from other scripts will
have left-to-right layout. Paragraphs with only neutral
characters get their direction from the surrounding paragraphs.pangoLayoutSetAutoDir(object, auto.dir)objectauto.dirTRUE, compute the bidirectional base direction
from the layout's contents.FALSE, the choice between left-to-right and
right-to-left layout is done according to the base direction
of the layout's PangoContext. (See pangoContextSetBaseDir).
When the auto-computed direction of a paragraph differs from the
base direction of the context, the interpretation of
PANGO_ALIGN_LEFT and PANGO_ALIGN_RIGHT are swapped.
Since 1.4