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Mark `MappingTarget` as `#[non_exhaustive]` for increased semver flexibility

This will allow us to add new enum variants in the future without breaking semver compatibility. See https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute Since we already added an enum variant since v0.18.3, now is a good time to mark it as `#[non_exhaustive]`.

commit68528983d7739eafa4dd8b03b334e2b5584a1510 authorMartin Nordholts <enselic@gmail.com> dateSun 2 Jan 2022, 21:46 (5 years ago) parentf89869b
3 files changed+5−8
CHANGELOG.md+1−1 src/bin/bat/main.rs+3−7 src/syntax_mapping.rs+1
CHANGELOG.md+1−1
@@ -53,7 +53,7 @@
5353- Deprecate `HighlightingAssets::syntaxes()` and `HighlightingAssets::syntax_for_file_name()`. Use `HighlightingAssets::get_syntaxes()` and `HighlightingAssets::get_syntax_for_path()` instead. They return a `Result` which is needed for upcoming lazy-loading work to improve startup performance. They also return which `SyntaxSet` the returned `SyntaxReference` belongs to. See #1747, #1755, #1776, #1862 (@Enselic)
5454- Remove `HighlightingAssets::from_files` and `HighlightingAssets::save_to_cache`. Instead of calling the former and then the latter you now make a single call to `bat::assets::build`. See #1802, #1971 (@Enselic)
5555- Replace the `error::Error(error::ErrorKind, _)` struct and enum with an `error::Error` enum. `Error(ErrorKind::UnknownSyntax, _)` becomes `Error::UnknownSyntax`, etc. Also remove the `error::ResultExt` trait. These changes stem from replacing `error-chain` with `thiserror`. See #1820 (@Enselic)
56−- Add new `MappingTarget` enum variant `MapExtensionToUnknown`. Refer to its docummentation for more information. Clients are adviced to treat `MapExtensionToUnknown` the same as `MapToUnknown` in exhaustive matches. See #1703 (@cbolgiano)
56+- Add new `MappingTarget` enum variant `MapExtensionToUnknown`. Refer to its documentation for more information. Also mark `MappingTarget` as `#[non_exhaustive]` since more enum variants might be added in the future. See #1703 (@cbolgiano), #2012 (@Enselic)
5757
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src/bin/bat/main.rs+3−7
@@ -74,13 +74,9 @@ fn get_syntax_mapping_to_paths<'a>(
7474) -> HashMap<&'a str, Vec<String>> {
7575 let mut map = HashMap::new();
7676 for mapping in mappings {
77− match mapping {
78− (_, MappingTarget::MapToUnknown) => {}
79− (_, MappingTarget::MapExtensionToUnknown) => {}
80− (matcher, MappingTarget::MapTo(s)) => {
81− let globs = map.entry(*s).or_insert_with(Vec::new);
82− globs.push(matcher.glob().glob().into());
83− }
77+ if let (matcher, MappingTarget::MapTo(s)) = mapping {
78+ let globs = map.entry(*s).or_insert_with(Vec::new);
79+ globs.push(matcher.glob().glob().into());
8480 }
8581 }
8682 map
src/syntax_mapping.rs+1
@@ -8,6 +8,7 @@ use globset::{Candidate, GlobBuilder, GlobMatcher};
88pub mod ignored_suffixes;
99
1010#[derive(Debug, Clone, Copy, PartialEq)]
11+#[non_exhaustive]
1112pub enum MappingTarget<'a> {
1213 /// For mapping a path to a specific syntax.
1314 MapTo(&'a str),