Tty and Shell refuse a directory: not a shell

A directory passes access(X_OK), so Tty /etc made a pane whose shell
exited 127 and Shell /etc was taken. The shell lookup now refuses a
directory, and both say "not a shell: /etc is a directory" (Tty and
Shell share one refusal, host_io.Shell.refusal). shellset's golden takes
the shared wording (re-recorded by name).

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/builtins.zig b/src/builtins.zig
index f7dd543a..87a4d022 100644
--- a/src/builtins.zig
+++ b/src/builtins.zig
@@ -1020,10 +1020,10 @@ pub const Tty = struct {
         // A shell that is not there is said, where the host would quietly
         // start its fallback in its place.
         if (comptime pardes.hosted) if (arg.len > 0) {
-            var buf: [std.fs.max_path_bytes]u8 = undefined;
-            if (@import("host_io.zig").Shell.find(arg, &buf) == null) {
-                var said: [320]u8 = undefined;
-                return c.p.reportFailure(c.id, std.fmt.bufPrint(&said, "Tty: no shell \"{s}\" (a name on the usual paths, or a path to one)", .{arg[0..@min(arg.len, 200)]}) catch "Tty: no such shell");
+            var why: [320]u8 = undefined;
+            if (@import("host_io.zig").Shell.refusal(arg[0..@min(arg.len, 200)], &why)) |refused| {
+                var said: [340]u8 = undefined;
+                return c.p.reportFailure(c.id, std.fmt.bufPrint(&said, "Tty: {s}", .{refused}) catch "Tty: no such shell");
             }
         };
         const pane = exec.spawnTty(c.p, c.id) orelse return;