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Linguistic Rearrangement Feature Type

The linguistic rearrangement feature type (kLinguisticRearrangementType) specifies whether or not linguistic rearrangement of glyphs (Indic-style) is to be used. This feature is on by default for fonts that represent South Asian scripts. Linguistic rearrangement is different than the notion of linguistic reordering, which happens when text from predominantly left-to-right scripts (such as Latin) is mixed with text from predominantly right-to-left scripts (such as Hebrew).

Figure B-12 shows two examples of the display of the word “hindi”, first with linguistic rearrangement on and then with it off. In both cases, the source text is the same. However, when rearrangement is on, ATSUI rearranges the glyphs so they are displayed appropriately.

In some cases, users may not always want linguistic rearrangement to occur, preferring instead to enter characters in an “already rearranged” order. If a font supports the rearrangement feature type, you can either allow the default behavior (which is to perform rearrangement) or you can prevent it, using the selectors shown in Table B-15. This is a contextual feature type.

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