fn typo_to_group<'t>(msg: &'t Typo<'t>) -> Group<'t> {
 let title = match &msg.corrections {
 typos::Status::Valid => unimplemented!("never valid words to report"),
 typos::Status::Invalid => {
 format!("`{}` is disallowed", msg.typo,)
 }
 typos::Status::Corrections(corrections) => {
 format!(
 "`{}` should be {}",
 msg.typo,
 itertools::join(corrections.iter().map(|s| format!("`{s}`")), ", ")
 )
 }
 };
 let group = Group::with_title(Level::ERROR.primary_title(Cow::Owned(title)));
 let group = match &msg.context {
 Some(Context::File(context)) => {
 let path = context.path.as_os_str().to_string_lossy();
 let line = String::from_utf8_lossy(msg.buffer.as_ref());
 let snippet = Snippet::source(line)
 .path(path)
 .line_start(context.line_num);
 append_corrections(msg, 0, snippet, group)
 }
 Some(Context::Path(context)) => {
 let path = context
 .path
 .parent()
 .unwrap_or(std::path::Path::new("."))
 .join("");
 let path = path.as_os_str().to_string_lossy();
 let line = context.path.as_os_str().to_string_lossy();
 let snippet = Snippet::source(line);
 append_corrections(msg, path.len(), snippet, group)
 }
 Some(_) | None => group,
 };
 group
}
fn append_corrections<'t>(
 msg: &'t Typo<'t>,
 offset: usize,
 snippet: Snippet<'t, Annotation<'t>>,
 group: Group<'t>,
) -> Group<'t> {
 let span_start = msg.byte_offset + offset;
 let span_end = span_start + msg.typo.len();
 let span = span_start..span_end;
 match &msg.corrections {
 typos::Status::Valid => unimplemented!("never valid words to report"),
 typos::Status::Invalid => {
 let snippet = snippet.annotation(AnnotationKind::Primary.span(span));
 group.element(snippet)
 }
 typos::Status::Corrections(corrections) => {
 let snippet = snippet.annotation(AnnotationKind::Primary.span(span));
 group.element(snippet)
 }
 }
}