Re: Newbie questions re Unicode (1)

["J-P. Rosen" <rosen@adalog.fr>]

Le 29/07/2020 à 09:34, Ian Douglas a écrit :
> On Wednesday, 29 July 2020 09:28:15 UTC+2, Ian Douglas  wrote:
>> For example, π and φ or even φπ are accepted as variable names, but not something like ₢ for example. I guess only Latin 1 characters are allowed.
>>
> Mmm maybe because ₢ is a currency symbol and not defined as a "letter".

The definition of "Letter" for identifiers is as follows (General
Category is from ISO 10646/2017), see 2.1 and 2.3:

letter_uppercase
Any character whose General Category is defined to be “Letter, Uppercase”.

letter_lowercase
Any character whose General Category is defined to be “Letter, Lowercase”.

letter_titlecase
Any character whose General Category is defined to be “Letter, Titlecase”.

letter_modifier
Any character whose General Category is defined to be “Letter, Modifier”.

letter_other
Any character whose General Category is defined to be “Letter, Other”.

number_letter
Any character whose General Category is defined to be “Number, Letter”.

For more details, refer to ISO 10646, but be careful: ISO 10646 is 2.5
times the size of the Ada standard!

-- 
J-P. Rosen
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