Function normalize_text

src/tools.rs:765–770

Returns text for storing in special db columns to make case-insensitive search possible for non-ASCII messages, chat and contact names.

(text: &str)

/// Returns text for storing in special db columns to make case-insensitive search possible for
/// non-ASCII messages, chat and contact names.
pub(crate) fn normalize_text(text: &str) -> Option<String> {
    if text.is_ascii() {
        return None;
    };
    Some(text.to_lowercase()).filter(|t| t != text)
}

/// Increments `*t` and checks that it equals to `expected` after that.
#[expect(clippy::arithmetic_side_effects)]