Use fmt precision if specified in graphical report handler

src/handlers/graphical.rs

@@ -21,6 +21,14 @@ This printer can be customized by using [`new_themed()`](GraphicalReportHandler:
 
 See [`set_hook()`](crate::set_hook) for more details on customizing your global
 printer.
+
+The width with which reports get printed depends on the configured width value, but can also get overridden per call
+using the [Rust fmt width](https://doc.rust-lang.org/std/fmt/#width) specifier.
+
+```ignore
+let diagnostic = // ...
+println!("{diagnostic:300?}"); // Prints with 300 width instead of the configured value
+```
 */
 #[derive(Debug, Clone)]
 pub struct GraphicalReportHandler {
@@ -1366,7 +1374,13 @@ impl ReportHandler for GraphicalReportHandler {
             return fmt::Debug::fmt(diagnostic, f);
         }
 
-        self.render_report(f, diagnostic)
+        if let Some(width) = f.width() {
+            let mut handler = self.clone();
+            handler.termwidth = width;
+            handler.render_report(f, diagnostic)
+        } else {
+            self.render_report(f, diagnostic)
+        }
     }
 }