Function cove_lex_ir 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn cove_lex_ir(
    text: *const u8,
    len: usize,
) -> *mut u8

Colours the disassembly in text and answers a tiling of it, as an answer block. See crate::lex_ir_json.

text is what cove_compile or cove_run put in ir, handed back so that the colouring is of the text the caller is actually showing. Like cove_lex it neither checks nor runs anything, and for the same reason it is a call a page can make on its own thread.

Safety

As cove_compile.