Unclear which part of long lines is being pointed to about miette HOT 1 OPEN

#20 is possibly related. My understanding of the idea with #20 is that we could trim snippets horizontally similar to the way we're currently trimming them vertically (by only rendering a few context lines around the span).

In your example, I'm imagining that might look something like this:

Error: gen_completions::deser::kdl::duplicate_flag (link)

  × Error encountered while deserializing
  ╰─▶ Error encountered while reading command information
   ╭─[test.kdl:2:1]
 2 │     flags {
 3 │         "-h" "--very long string ··· aaaaaa" "-h" {
   ·         ──┬─                                 ──┬─
   ·           │                                    ╰── duplicate flag
   ·           ╰── already given here
 4 │             desc "foo bar baz"
   ╰────

I think having an option in GraphicalTheme to highlight spans by swapping the fg/bg colors or with ansi underlines would be useful, even if the issues with long lines are solved another way. There was a great blog post I saw a while ago that recommended fg/bg swap as the default way to format compiler errors because it has a better shot at handling things like bidi text or misprediction of character display widths. I don't fully agree that it should be the default, but think it would be a good to support as an option. Unfortunately, I couldn't find the original post :(

from miette.