Checks if a character that should not be normally rendered.
This includes all Unicode characters with "ZERO WIDTH" in their name,
as well as *bidi* formatting characters, and a few other ones. This is
totally different from g_unichar_iszerowidth() and is at best misnamed.
Checks if a character that should not be normally rendered.
This includes all Unicode characters with "ZERO WIDTH" in their name, as well as *bidi* formatting characters, and a few other ones. This is totally different from g_unichar_iszerowidth() and is at best misnamed.