Hi all, would anyone out there happen to know how did arabic DOS, on the old days, deal with:
1) The control characters needed to handle the script - ZWJ (Zero-width joiner), ZWNJ (zero-width non-joiner), RLM (right-to-left mark), LRM (left-to-right mark) and control characters needed to handle bilingual text (LTR and RTL) in a same sentence: RLE/LRE (right-to-left and left-to-right embedding), RLO/LRO (right-to-left and left-to-right override) and PDF (POP directional Formatting). 2) Codepage 720 and many others which only present the isolated shapes of the characters. DOS, seemingly, had somehow to rely on subfonts or any feature which would cause DOS to trade the characters' isolated shapes for their initial, medial or final shapes on-the-fly as the text was typed. 3) Combining chars. All arabic codepages, including cp864, include at least two codepoints which present them. Hebrew DOS is a simpler case yet topic #3 also applies to the script and, with the exception of control characters ZWJ and ZWNJ, topic #1 also does. Thanks in advance, Henrique ------------------------------------------------------------------------------ AppSumo Presents a FREE Video for the SourceForge Community by Eric Ries, the creator of the Lean Startup Methodology on "Lean Startup Secrets Revealed." This video shows you how to validate your ideas, optimize your ideas and identify your business strategy. http://p.sf.net/sfu/appsumosfdev2dev _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
