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bash: use a shell command for shell integration (#9875) 

Prior to #7044, on macOS, our shell-integrated command line would be
executed under `exec -l`, which causes bash to be started as a login
shell. This matches the macOS platform norms.

The change to direct command execution meant that we'd skip that path,
and bash would start as a normal interactive (non-login) shell on macOS.
We fixed this in #7253 by adding `--login` to the `bash` direct command
on macOS.

This avoided some of the overhead of starting an extra process just to
get a login shell, but it unfortunately doesn't quite match the bash
environment we get when shell integration isn't enabled (namely, `$0`
doesn't get the login-shell-identifying `-` prefix).

Instead, this change implements the approach proposed in #7254, which
switches the bash shell integration path to use a `.shell` command,
giving us the same execution environment as the non-shell-integrated
command.
pull/9877/head
Mitchell Hashimoto 2025-12-11 15:41:29 -08:00 committed by GitHub
parent 4d757f0f28 c0deaaba4e
commit 2448a90c30
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GPG Key ID: B5690EEEBB952194
1 changed files with 10 additions and 63 deletions
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73
src/termio/shell_integration.zig
View File

@ -259,7 +259,7 @@ fn setupBash(
resource_dir: []const u8,
env: *EnvMap,
) !?config.Command {
var args: std.ArrayList([:0]const u8) = try .initCapacity(alloc, 3);
var args: std.ArrayList([:0]const u8) = try .initCapacity(alloc, 2);
defer args.deinit(alloc);
// Iterator that yields each argument in the original command line.
@ -273,11 +273,6 @@ fn setupBash(
} else return null;
try args.append(alloc, "--posix");
// On macOS, we request a login shell to match that platform's norms.
if (comptime builtin.target.os.tag.isDarwin()) {
try args.append(alloc, "--login");
}
// Stores the list of intercepted command line flags that will be passed
// to our shell integration script: --norc --noprofile
// We always include at least "1" so the script can differentiate between
@ -357,9 +352,8 @@ fn setupBash(
);
try env.put("ENV", integ_dir);
// Since we built up a command line, we don't need to wrap it in
// ANOTHER shell anymore and can do a direct command.
return .{ .direct = try args.toOwnedSlice(alloc) };
// Join the accumulated arguments to form the final command string.
return .{ .shell = try std.mem.joinZ(alloc, " ", args.items) };
}
test "bash" {
@ -373,12 +367,7 @@ test "bash" {
const command = try setupBash(alloc, .{ .shell = "bash" }, ".", &env);
try testing.expect(command.?.direct.len >= 2);
try testing.expectEqualStrings("bash", command.?.direct[0]);
try testing.expectEqualStrings("--posix", command.?.direct[1]);
if (comptime builtin.target.os.tag.isDarwin()) {
try testing.expectEqualStrings("--login", command.?.direct[2]);
}
try testing.expectEqualStrings("bash --posix", command.?.shell);
try testing.expectEqualStrings("./shell-integration/bash/ghostty.bash", env.get("ENV").?);
try testing.expectEqualStrings("1", env.get("GHOSTTY_BASH_INJECT").?);
}
@ -421,12 +410,7 @@ test "bash: inject flags" {
const command = try setupBash(alloc, .{ .shell = "bash --norc" }, ".", &env);
try testing.expect(command.?.direct.len >= 2);
try testing.expectEqualStrings("bash", command.?.direct[0]);
try testing.expectEqualStrings("--posix", command.?.direct[1]);
if (comptime builtin.target.os.tag.isDarwin()) {
try testing.expectEqualStrings("--login", command.?.direct[2]);
}
try testing.expectEqualStrings("bash --posix", command.?.shell);
try testing.expectEqualStrings("1 --norc", env.get("GHOSTTY_BASH_INJECT").?);
}
@ -437,12 +421,7 @@ test "bash: inject flags" {
const command = try setupBash(alloc, .{ .shell = "bash --noprofile" }, ".", &env);
try testing.expect(command.?.direct.len >= 2);
try testing.expectEqualStrings("bash", command.?.direct[0]);
try testing.expectEqualStrings("--posix", command.?.direct[1]);
if (comptime builtin.target.os.tag.isDarwin()) {
try testing.expectEqualStrings("--login", command.?.direct[2]);
}
try testing.expectEqualStrings("bash --posix", command.?.shell);
try testing.expectEqualStrings("1 --noprofile", env.get("GHOSTTY_BASH_INJECT").?);
}
}
@ -459,24 +438,14 @@ test "bash: rcfile" {
// bash --rcfile
{
const command = try setupBash(alloc, .{ .shell = "bash --rcfile profile.sh" }, ".", &env);
try testing.expect(command.?.direct.len >= 2);
try testing.expectEqualStrings("bash", command.?.direct[0]);
try testing.expectEqualStrings("--posix", command.?.direct[1]);
if (comptime builtin.target.os.tag.isDarwin()) {
try testing.expectEqualStrings("--login", command.?.direct[2]);
}
try testing.expectEqualStrings("bash --posix", command.?.shell);
try testing.expectEqualStrings("profile.sh", env.get("GHOSTTY_BASH_RCFILE").?);
}
// bash --init-file
{
const command = try setupBash(alloc, .{ .shell = "bash --init-file profile.sh" }, ".", &env);
try testing.expect(command.?.direct.len >= 2);
try testing.expectEqualStrings("bash", command.?.direct[0]);
try testing.expectEqualStrings("--posix", command.?.direct[1]);
if (comptime builtin.target.os.tag.isDarwin()) {
try testing.expectEqualStrings("--login", command.?.direct[2]);
}
try testing.expectEqualStrings("bash --posix", command.?.shell);
try testing.expectEqualStrings("profile.sh", env.get("GHOSTTY_BASH_RCFILE").?);
}
}
@ -538,35 +507,13 @@ test "bash: additional arguments" {
// "-" argument separator
{
const command = try setupBash(alloc, .{ .shell = "bash - --arg file1 file2" }, ".", &env);
try testing.expect(command.?.direct.len >= 6);
try testing.expectEqualStrings("bash", command.?.direct[0]);
try testing.expectEqualStrings("--posix", command.?.direct[1]);
if (comptime builtin.target.os.tag.isDarwin()) {
try testing.expectEqualStrings("--login", command.?.direct[2]);
}
const offset = if (comptime builtin.target.os.tag.isDarwin()) 3 else 2;
try testing.expectEqualStrings("-", command.?.direct[offset + 0]);
try testing.expectEqualStrings("--arg", command.?.direct[offset + 1]);
try testing.expectEqualStrings("file1", command.?.direct[offset + 2]);
try testing.expectEqualStrings("file2", command.?.direct[offset + 3]);
try testing.expectEqualStrings("bash --posix - --arg file1 file2", command.?.shell);
}
// "--" argument separator
{
const command = try setupBash(alloc, .{ .shell = "bash -- --arg file1 file2" }, ".", &env);
try testing.expect(command.?.direct.len >= 6);
try testing.expectEqualStrings("bash", command.?.direct[0]);
try testing.expectEqualStrings("--posix", command.?.direct[1]);
if (comptime builtin.target.os.tag.isDarwin()) {
try testing.expectEqualStrings("--login", command.?.direct[2]);
}
const offset = if (comptime builtin.target.os.tag.isDarwin()) 3 else 2;
try testing.expectEqualStrings("--", command.?.direct[offset + 0]);
try testing.expectEqualStrings("--arg", command.?.direct[offset + 1]);
try testing.expectEqualStrings("file1", command.?.direct[offset + 2]);
try testing.expectEqualStrings("file2", command.?.direct[offset + 3]);
try testing.expectEqualStrings("bash --posix -- --arg file1 file2", command.?.shell);
}
}