Arabic font design that supports English and French

Arabs use English as a second language and French in North Africa.
I want to design a font that supports both languages.
When creating a new project in FontCreator, is it sufficient to support both languages?
Or do I need to add Latin Extended-A?

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Unicode for French Text
French text requires support for basic Latin letters, diacritical marks, and specific punctuation. Below are the key Unicode ranges and characters for French:
Basic Latin (U+0000 to U+007F):
Covers A-Z, a-z, digits (0-9), and basic punctuation (., !, ?, etc.).
Example: U+0041 (A), U+0061 (a), U+002E (.).
Latin-1 Supplement (U+0080 to U+00FF):
Includes French-specific diacritical characters:
Acute accent: é (U+00E9)
Grave accent: à (U+00E0), è (U+00E8), ù (U+00F9)
Circumflex: â (U+00E2), ê (U+00EA), î (U+00EE), ô (U+00F4), û (U+00FB)
Cedilla: ç (U+00E7)
Diaeresis: ë (U+00EB), ï (U+00EF), ü (U+00FC)
Also includes guillemets: « (U+00AB), » (U+00BB).
Other Ranges:
French text rarely needs characters outside Latin-1, but Unicode supports additional symbols like € (U+20AC) in the Currency Symbols block.

(Grok 3)