asyncgit: support comma-separated branch.sort keys; add changelog

git accepts multi-key sort values like `-committerdate,refname`.
BranchSort::parse now splits on commas and honours the primary (first)
key rather than falling back to the default.

Add a test for the comma-separated case and a CHANGELOG entry.

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Unreleased
 
 ### Changed
+* honour `branch.sort` git config when listing branches, including support for comma-separated multi-key values ([#2918](https://github.com/gitui-org/gitui/pull/2918))
 * use [tombi](https://github.com/tombi-toml/tombi) for all toml file formatting
 * open the external editor from the status diff view [[@WaterWhisperer](https://github.com/WaterWhisperer)] ([#2805](https://github.com/gitui-org/gitui/issues/2805))
 

asyncgit/src/sync/branch/mod.rs

@@ -250,10 +250,12 @@ impl BranchSort {
 	}
 
 	fn parse(raw: &str) -> Self {
-		let trimmed = raw.trim();
-		let (descending, key) = trimmed
+		// git accepts comma-separated lists (e.g. `-committerdate,refname`);
+		// honour only the primary (first) key.
+		let primary = raw.split(',').next().unwrap_or("").trim();
+		let (descending, key) = primary
 			.strip_prefix('-')
-			.map_or((false, trimmed), |rest| (true, rest));
+			.map_or((false, primary), |rest| (true, rest));
 		match key {
 			"committerdate" => Self {
 				field: BranchSortField::CommitterDate,
@@ -874,6 +876,26 @@ mod tests_branch_sort {
 		);
 	}
 
+	#[test]
+	fn parse_comma_separated_uses_primary_key() {
+		// git allows multi-key sort like `-committerdate,refname`; we use
+		// only the first key and ignore the rest.
+		assert_eq!(
+			BranchSort::parse("-committerdate,refname"),
+			BranchSort {
+				field: BranchSortField::CommitterDate,
+				descending: true,
+			}
+		);
+		assert_eq!(
+			BranchSort::parse("authordate,-refname"),
+			BranchSort {
+				field: BranchSortField::AuthorDate,
+				descending: false,
+			}
+		);
+	}
+
 	#[test]
 	fn applies_committerdate_descending_from_config() {
 		let (_td, repo) = repo_init().unwrap();