script-metadata
http://unicode.org/cldr/trac/ticket/3871
Here is a proposed structure for supplemental data
<script>
<scriptData type=”Latn” lines=”top-to-bottom” characters=”left-to-right” spaces=”true” shaping=”minimal” usage=”recommended” originRegion=”150” sample=”A”>
lines/characters =
- as in the locale orientation element.
spaces =
- true if the script normally uses spaces to separate words
shaping = (in normal usage)
- none if no shaping is normally needed
- minimal if only minor shaping is normally needed, such as accent placement
- major if glyphs normally need to rearrange, or change shape depending on context
usage = value in UAX31
originRegion = continent or subcontinent where script originated. Following the Unicode book / charts (see the spreadsheet).
sample = character with distinctive glyph that can be used to represent the script in icons (eg missing glyph)
The orientation field in a locale would only be used for overriding.