[GeoffR]

This patch changes the font style used for book titles from italic to normal, which fixes a problem with displaying book titles in Arabic on the Glo/Aura/AuraHD/H2O. (Edit: I don't think the problem occurs on the Touch/Mini.)

Spoiler:

<Patch>
patch_name = `Book titles font style normal`
patch_enable = `yes`
#
# This patch changes the font style used for book titles displayed in the
# library, search results, etc. from italic to normal. This works around the
# problem of the system fonts missing italic glyphs for Arabic.
#
# Book title in details view
replace_string = D12511, `font-style: italic;`, `font-style: normal;`
#
# Search term in search results view
replace_string = D7D573, `font-style: italic;`, `font-style: normal;`
#
# Book title in library view
replace_string = D842F0, `font-style: italic;`, `font-style: normal;`
</Patch>

Edit: Note that the Arabic glyphs will not be displayed immediately after restarting the device, it is necessary to open a book and maybe to access the Aa font settings menu before they will be available to the rest of the UI.