Function tx_element_set_attribute 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn tx_element_set_attribute(
    doc: *mut TxDocument,
    el: TxNodeId,
    name: *const c_char,
    value: *const c_char,
) -> TxError

Sets an attribute on an element. Creates the attribute if it doesn’t exist, or updates its value if it does.

Safety

• doc must be a valid, non-null pointer to a TxDocument.
• name and value must be valid, non-null pointers to null-terminated UTF-8 strings.