Keep formatting fn even if there is an unformattable argument
@@ -2232,8 +2232,10 @@ fn rewrite_args(
) -> Option<String> {
let mut arg_item_strs = args
.iter()
- .map(|arg| arg.rewrite(context, Shape::legacy(multi_line_budget, arg_indent)))
- .collect::<Option<Vec<_>>>()?;
+ .map(|arg| {
+ arg.rewrite(context, Shape::legacy(multi_line_budget, arg_indent))
+ .unwrap_or_else(|| context.snippet(arg.span()).to_owned())
+ }).collect::<Vec<_>>();
// Account for sugary self.
// FIXME: the comment for the self argument is dropped. This is blocked
