Defintion of ALPHABETIC

[joefiesta]

What is ALPHABETIC mean?

The "IS var ALPHA" "IF var ALPHA" command reports if a character (string?) is ALPHABETIC. But, what is ALPHABETIC exactly. Many of the characters in the range xC0-xFF are alphabetic characters. They are not symbols, numbers, punctutation or anything else.

I think ALPHABETIC needs to be defined more exactly.

[neogna2]

I think it means the english alphabet's 26 characters in upper and lower case. In other words the ranges a-z and A-Z.
For example the german ü is not included.

Code: Select all

x := "ü"
if x is alpha
    MsgBox 1 ;not reached

It looks like AutoHotkey reuses the terms alpha and alnum from C++
https://cplusplus.com/reference/cctype/isalpha/
https://cplusplus.com/reference/cctype/isalnum/

If the above is true then the v1 if var is doc could after
True if Var is empty or contains only alphabetic characters
append
(a-zA-Z in the english alphabet)

And similarly in v2 Is doc after
True if Value is a string and is empty or contains only alphabetic characters
append
(a-zA-Z in the english alphabet)

[guest3456]

It looks like AutoHotkey reuses the terms alpha and alnum from C++
https://cplusplus.com/reference/cctype/isalpha/

but according to this link, it returns based on the system locale. so if you changed to German locale, would the code then return true?

in either case, more explicit definition is always better

[lexikos]

Links to C standard functions are irrelevant. This is not C.

[v1.0.90+]: The system locale is ignored unless StringCaseSense Locale has been used.
Source: If Var is Type - Syntax & Usage | AutoHotkey

https://github.com/Lexikos/AutoHotkey_L-Docs/commit/11558d1b