feat(MSRV): Actually bump the MSRV to 1.70.0

Cargo.toml

@@ -9,7 +9,7 @@ documentation = "https://docs.rs/miette"
 license = "Apache-2.0"
 readme = "README.md"
 edition = "2018"
-rust-version = "1.56.0"
+rust-version = "1.70.0"
 exclude = ["images/", "tests/", "miette-derive/"]
 
 [dependencies]

README.md

@@ -48,6 +48,7 @@ libraries and such might not want.
   - [... delayed source code](#-delayed-source-code)
   - [... handler options](#-handler-options)
   - [... dynamic diagnostics](#-dynamic-diagnostics)
+  - [... syntax highlighting](#-syntax-highlighting)
 - [Acknowledgements](#acknowledgements)
 - [License](#license)
 
@@ -96,7 +97,7 @@ You can derive a `Diagnostic` from any `std::error::Error` type.
 
 `thiserror` is a great way to define them, and plays nicely with `miette`!
 */
-use miette::{Diagnostic, NamedSource, SourceSpan};
+use miette::{Diagnostic, SourceSpan};
 use thiserror::Error;
 
 #[derive(Error, Debug, Diagnostic)]
@@ -123,7 +124,7 @@ Use this `Result` type (or its expanded version) as the return type
 throughout your app (but NOT your libraries! Those should always return
 concrete types!).
 */
-use miette::Result;
+use miette::{NamedSource, Result};
 fn this_fails() -> Result<()> {
     // You can use plain strings as a `Source`, or anything that implements
     // the one-method `Source` trait.
@@ -305,7 +306,7 @@ enabled:
 miette = { version = "X.Y.Z", features = ["fancy"] }
 ```
 
-Another way to display a diagnostic is by printing them using the debug formatter. 
+Another way to display a diagnostic is by printing them using the debug formatter.
 This is, in fact, what returning diagnostics from main ends up doing.
 To do it yourself, you can write the following:
 
@@ -611,6 +612,7 @@ miette::set_hook(Box::new(|_| {
             .unicode(false)
             .context_lines(3)
             .tab_width(4)
+            .break_words(true)
             .build(),
     )
 }))
@@ -632,7 +634,7 @@ then you may want to use [`miette!`], [`diagnostic!`] macros or
 
 let source = "2 + 2 * 2 = 8".to_string();
 let report = miette!(
-  labels = vec![
+  labels = vec[
       LabeledSpan::at(12..13, "this should be 6"),
   ],
   help = "'*' has greater precedence than '+'",
@@ -641,6 +643,38 @@ let report = miette!(
 println!("{:?}", report)
 ```
 
+#### ... syntax highlighting
+
+`miette` can be configured to highlight syntax in source code snippets.
+
+<!-- TODO: screenshot goes here once default Theme is decided -->
+
+To use the built-in highlighting functionality, you must enable the
+`syntect-highlighter` crate feature. When this feature is enabled, `miette` will
+automatically use the [`syntect`] crate to highlight the `#[source_code]`
+field of your [`Diagnostic`].
+
+Syntax detection with [`syntect`] is handled by checking 2 methods on the [`SpanContents`] trait, in order:
+* [language()](SpanContents::language) - Provides the name of the language
+  as a string. For example `"Rust"` will indicate Rust syntax highlighting.
+  You can set the language of the [`SpanContents`] produced by a
+  [`NamedSource`] via the [`with_language`](NamedSource::with_language)
+  method.
+* [name()](SpanContents::name) - In the absence of an explicitly set
+  language, the name is assumed to contain a file name or file path.
+  The highlighter will check for a file extension at the end of the name and
+  try to guess the syntax from that.
+
+If you want to use a custom highlighter, you can provide a custom
+implementation of the [`Highlighter`](highlighters::Highlighter)
+trait to [`MietteHandlerOpts`] by calling the
+[`with_syntax_highlighting`](MietteHandlerOpts::with_syntax_highlighting)
+method. See the [`highlighters`] module docs for more details.
+
+### MSRV
+
+This crate requires rustc 1.70.0 or later.
+
 ### Acknowledgements
 
 `miette` was not developed in a void. It owes enormous credit to various

clippy.toml

@@ -1 +1 @@
-msrv = "1.56.0"
+msrv = "1.70.0"

src/lib.rs

@@ -672,6 +672,10 @@
 //! [`with_syntax_highlighting`](MietteHandlerOpts::with_syntax_highlighting)
 //! method. See the [`highlighters`] module docs for more details.
 //!
+//! ## MSRV
+//!
+//! This crate requires rustc 1.70.0 or later.
+//!
 //! ## Acknowledgements
 //!
 //! `miette` was not developed in a void. It owes enormous credit to various

src/protocol.rs

@@ -179,6 +179,7 @@ impl From<Box<dyn std::error::Error + Send + Sync>> for Box<dyn Diagnostic + Sen
 */
 #[derive(Copy, Clone, Debug, Eq, Ord, PartialEq, PartialOrd)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[derive(Default)]
 pub enum Severity {
     /// Just some help. Here's how you could be doing it better.
     Advice,
@@ -186,14 +187,11 @@ pub enum Severity {
     Warning,
     /// Critical failure. The program cannot continue.
     /// This is the default severity, if you don't specify another one.
+    #[default]
     Error,
 }
 
-impl Default for Severity {
+
-    fn default() -> Self {
-        Severity::Error
-    }
-}
 
 #[cfg(feature = "serde")]
 #[test]