Precomposed form

[Mark Davis ☕]

The mechanisms and issues are explained in detail in UAX #15 and UTR #36:
see http://www.unicode.org/reports/.

Mark

*— Il meglio è l’inimico del bene —*


On Tue, Oct 19, 2010 at 22:09, Abdulrahman I. ALGhadir
<aghadir at citc.gov.sa>wrote:

>  I know this question has nothing to do with this mailing list but I am
> just wondering is there any rule that decided whenever a sequence of
> code-points have a certain percomposed form or if there is already a
> code-point which has an identical display as for a sequence code-points to
> be its precomposed form or not.
>
> Ex.:
>
> U+062d U+0654 this sequence of NSM and a normal character yield an
> identical display for this code-point U+0681
>
>
>
> And you even check the description for U+0681   here :
>
> http://unicode.org/charts/PDF/U0600.pdf
>
>
>
> “0681 <Unicode > ARABIC LETTER HAH WITH HAMZA ABOVE”
>
>
>
> From the description of it you can clearly see that this letter is equal to
>
>
> U+062d U+0654
>
>
>
> “ 062d  <Unicode> ARABIC LETTER HAH”
>
> “ 0654  <Unicode > ARABIC HAMZA ABOVE”
>
>
>
> So I think these two sets should be relatively as one of them is
> precomposed of the sequence code-points
>
>
>
> Same as this example
>
> "0623 <Unicode> ARABIC LETTER ALEF WITH HAMZA ABOVE = 0627 <Unicode>
>
> 0654 <Unicode>"
>
>
>
> There a lot of combinations of NSM with other code-points which are same as
> the example mentioned above.
>
>
>
> Abdulrahman,
>
>
>
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>
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