Small changes

Cargo.toml

@@ -15,6 +15,9 @@ termination = ["dep:ansee"]
 ansee = { git = "https://git.pfaff.dev/michael/ansee", optional = true }
 typeid-cast = "0.1"
 
+[dev-dependencies]
+how = { path = ".", features = ["termination"] }
+
 [[example]]
 name = "output"
-required-features = [ "termination" ]
+required-features = ["termination"]

src/explain.rs

@@ -1,7 +1,7 @@
 use std::panic::Location;
 use std::sync::Arc;
 
-use crate::{How, IntoContext, Detail};
+use crate::{Detail, How, IntoContext};
 
 pub trait Explain: Sized {
     type Output;
@@ -40,6 +40,19 @@ impl Explain for How {
     }
 }
 
+/*impl<E> Explain for E
+where
+    E: std::error::Error,
+{
+    type Output = How;
+
+    #[inline(always)]
+    #[track_caller]
+    fn context(self, context: impl IntoContext) -> Self::Output {
+        How::new(self.to_string()).context(context)
+    }
+}*/
+
 impl<T, E> Explain for Result<T, E>
 where
     E: std::error::Error + 'static,

src/how.rs

@@ -9,7 +9,10 @@ use crate::report::report_write;
 /// By default, does not implement [`Clone`] because [`std::backtrace::Backtrace`] does not
 /// implement [`Clone`]. However, the `clone-with-caveats` feature may be used to enable a
 /// [`Clone`] impl that sets the cloned `backtrace` to [`std::backtrace::Backtrace::disabled`].
-#[cfg_attr(any(feature = "arc-backtrace", feature = "clone-with-caveats"), derive(Clone))]
+#[cfg_attr(
+    any(feature = "arc-backtrace", feature = "clone-with-caveats"),
+    derive(Clone)
+)]
 pub struct How(Box<HowInner>);
 
 struct HowInner {
@@ -145,6 +148,7 @@ impl std::fmt::Display for How {
             if i != 0 {
                 f.write_str("\n")?;
             }
+
             report_write!(f, &opts.indent().next(), "{ctx}")?;
         }
         Ok(())

src/report.rs

@@ -41,7 +41,7 @@ pub(crate) use report_write;
 #[inline]
 fn write_indent(n: usize, f: &mut impl Write) -> std::fmt::Result {
     for _ in 0..n {
-        f.write_str("  ")?;
+        f.write_str("   ")?;
     }
     Ok(())
 }