fix(graphical): fix nested error wrapping

src/handlers/graphical.rs

@@ -1,7 +1,7 @@
 use std::fmt::{self, Write};
 
 use owo_colors::{OwoColorize, Style, StyledList};
-use unicode_width::UnicodeWidthChar;
+use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
 
 use crate::diagnostic_chain::{DiagnosticChain, ErrorKind};
 use crate::handlers::theme::*;
@@ -354,6 +354,8 @@ impl GraphicalReportHandler {
                         inner_renderer.footer = None;
                         // Cause chains are already flattened, so don't double-print the nested error
                         inner_renderer.with_cause_chain = false;
+                        // Since everything from here on is indented, shrink the virtual terminal
+                        inner_renderer.termwidth -= rest_indent.width();
                         inner_renderer.render_report(&mut inner, diag)?;
 
                         writeln!(f, "{}", self.wrap(&inner, opts))?;

tests/graphical.rs

@@ -299,14 +299,12 @@ fn wrapping_nested_errors() -> Result<(), MietteError> {
   ╰─▶ baby::error
       
         × Wah wah: I may be small, but I'll
-      cause a
-        │ proper bout of trouble — just try
-      wrapping
-        │ this mess of a line, buddo!
+        │ cause a proper bout of trouble — just
+        │ try wrapping this mess of a line,
+        │ buddo!
         help: it cannot be helped... would
-      youuuu
-              really want to get rid of an error
-              that's so cute?
+              youuuu really want to get rid of
+              an error that's so cute?
       
   help: try doing it better next time? I mean,
         you could have also done better this