Expose tab_width through MietteHandler

README.md

@@ -389,7 +389,7 @@ miette::set_hook(Box::new(|_| {
         .terminal_links(true)
         .unicode(false)
         .context_lines(3)
-        .with_tab_width(4)
+        .tab_width(4)
         .build())
 }))
 

src/handler.rs

@@ -39,6 +39,7 @@ pub struct MietteHandlerOpts {
     pub(crate) unicode: Option<bool>,
     pub(crate) footer: Option<String>,
     pub(crate) context_lines: Option<usize>,
+    pub(crate) tab_width: Option<usize>,
 }
 
 impl MietteHandlerOpts {
@@ -119,6 +120,12 @@ impl MietteHandlerOpts {
         self
     }
 
+    /// Set the displayed tab width in spaces.
+    pub fn tab_width(mut self, width: usize) -> Self {
+        self.tab_width = Some(width);
+        self
+    }
+
     /// Builds a [MietteHandler] from this builder.
     pub fn build(self) -> MietteHandler {
         let graphical = self.is_graphical();
@@ -167,6 +174,9 @@ impl MietteHandlerOpts {
             if let Some(context_lines) = self.context_lines {
                 handler = handler.with_context_lines(context_lines);
             }
+            if let Some(w) = self.tab_width {
+                handler = handler.tab_width(w);
+            }
             MietteHandler {
                 inner: Box::new(handler),
             }

src/handlers/graphical.rs

@@ -54,8 +54,8 @@ impl GraphicalReportHandler {
         }
     }
 
-    /// Replace tabs with spaces.
-    pub fn with_tab_width(mut self, width: usize) -> Self {
+    /// Set the displayed tab width in spaces.
+    pub fn tab_width(mut self, width: usize) -> Self {
         self.tab_width = Some(width);
         self
     }

tests/graphical.rs

@@ -22,7 +22,7 @@ fn fmt_report(diag: Report) -> String {
     } else if let Ok(w) = std::env::var("REPLACE_TABS") {
         GraphicalReportHandler::new_themed(GraphicalTheme::unicode_nocolor())
             .with_width(80)
-            .with_tab_width(w.parse().expect("Invalid tab width."))
+            .tab_width(w.parse().expect("Invalid tab width."))
             .render_report(&mut out, diag.as_ref())
             .unwrap();
     } else {