Use default shell instead of bash on Unix-like OS

Author: yerke

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Breaking Changes
+
+#### Shell
+* use default shell instead of bash on Unix-like OS [[@yerke](https://github.com/yerke)] ([#2343](https://github.com/extrawurst/gitui/pull/2343))
+
 ### Fixes
 * respect env vars like `GIT_CONFIG_GLOBAL` ([#2298](https://github.com/extrawurst/gitui/issues/2298))
 

git2-hooks/src/hookspath.rs

@@ -3,7 +3,7 @@ use git2::Repository;
 use crate::{error::Result, HookResult, HooksError};
 
 use std::{
-	path::Path, path::PathBuf, process::Command, str::FromStr,
+	env, path::Path, path::PathBuf, process::Command, str::FromStr,
 };
 
 pub struct HookPaths {
@@ -113,9 +113,11 @@ impl HookPaths {
 
 		log::trace!("run hook '{:?}' in '{:?}'", hook, self.pwd);
 
-		let git_bash = find_bash_executable()
-			.unwrap_or_else(|| PathBuf::from("bash"));
-		let output = Command::new(git_bash)
+		let git_shell = find_bash_executable().unwrap_or_else(|| {
+			find_default_unix_shell()
+				.unwrap_or_else(|| PathBuf::from("bash"))
+		});
+		let output = Command::new(git_shell)
 			.args(bash_args)
 			.current_dir(&self.pwd)
 			// This call forces Command to handle the Path environment correctly on windows,
@@ -191,3 +193,8 @@ fn find_bash_executable() -> Option<PathBuf> {
 		None
 	}
 }
+
+// Find default shell on Unix-like OS.
+fn find_default_unix_shell() -> Option<PathBuf> {
+	env::var_os("SHELL").map(PathBuf::from)
+}