Mini with no argument is wrong #args, EINVAL; Find, Grep and Mini say their names capitalised

Mini needs a file but did not say so, so a bare Mini ran and failed EIO. It now requires its argument, refused wrong #args (EINVAL) as every such word is. Its failures, Find's and Grep's start with the builtin's own name (Mini:, Find:, Grep:), as the others' do.

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

1 files changed, 10 insertions, 2 deletions

diff --git a/src/ninep/ctl.zig b/src/ninep/ctl.zig
index 9d7557e6..7986333c 100644
--- a/src/ninep/ctl.zig
+++ b/src/ninep/ctl.zig
@@ -1924,10 +1924,10 @@ test "Grep with no hit says grep: no match and opens nothing, a missing pane dir
     for (p.panes) |slot| count += @intFromBool(slot != null);
     const missed = wr(p, Node.of(serialOf(p), .exec), "Grep zzqqnomatchzz\n");
     try testing.expectEqual(E.NOENT, missed.errno());
-    try testing.expectEqualStrings("grep: pattern not found", missed.reply.ename);
+    try testing.expectEqualStrings("Grep: pattern not found", missed.reply.ename);
     const unfound = wr(p, Node.of(serialOf(p), .exec), "Find zzqqnomatchzz\n");
     try testing.expectEqual(E.NOENT, unfound.errno());
-    try testing.expectEqualStrings("find: name not found", unfound.reply.ename);
+    try testing.expectEqualStrings("Find: name not found", unfound.reply.ename);
     var after: usize = 0;
     for (p.panes) |slot| after += @intFromBool(slot != null);
     try testing.expectEqual(count, after);
@@ -2244,6 +2244,14 @@ test "a failure said while a 9P write waits on it posts no msg, only the write's
     try testing.expect(p.fs.late_failure_len > 0);
 }
 
+test "Mini with no argument is wrong #args, EINVAL, as every word that needs one" {
+    const p = try withFile(testing.allocator, "x\n");
+    defer p.deinit();
+    const r = wr(p, Node.of(serialOf(p), .ctl), "Mini\n");
+    try testing.expectEqual(E.INVAL, r.errno());
+    try testing.expectEqualStrings("wrong #args in control message \"Mini\"", r.reply.ename);
+}
+
 test "every EINVAL a write gets says why, in its err record too; DEL is a control character in a line" {
     const p = try withFile(testing.allocator, "x\n");
     defer p.deinit();