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termio/exec: fall back to default command if specified command not found

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Fixes #880

If a command is specified but it can't be found, then we try to fallback
to a default command like "sh" and log the issue. This prevents Ghostty
from simply exiting.
This commit is contained in:
Mitchell Hashimoto
2023-11-14 16:58:27 -08:00
parent 903838881a
commit 822c67b3e0
1 changed files with 20 additions and 5 deletions
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25
src/termio/Exec.zig
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@ -722,13 +722,28 @@ const Subprocess = struct {
const alloc = arena.allocator();
// Determine the path to the binary we're executing
const path = try Command.expandPath(
alloc,
opts.full_config.command orelse switch (builtin.os.tag) {
const default_path = switch (builtin.os.tag) {
.windows => "cmd.exe",
else => "sh",
},
) orelse return error.CommandNotFound;
};
const path = try Command.expandPath(
alloc,
opts.full_config.command orelse default_path,
) orelse path: {
// If we had a command specified, try to at least fall
// back to a default value like "sh" so that Ghostty
// launches.
if (opts.full_config.command) |command| {
log.warn("unable to find command, fallbacking back to default command={s}", .{command});
if (try Command.expandPath(
alloc,
default_path,
)) |path| break :path path;
}
log.warn("unable to find default command to launch, exiting", .{});
return error.CommandNotFound;
};
// On macOS, we launch the program as a login shell. This is a Mac-specific
// behavior (see other terminals). Terminals in general should NOT be