mkdir builtin and $'\0'

[Oliver Kiddle <okiddle@yahoo.co.uk>]

On 21 Aug, Mikael Magnusson wrote:
> % mkdir /tmp/ホ
> % cd /tmp/ホ

While catching up on the mails, I didn't immediately spot the message
with the fix for this so instead tried to reproduce it. In the process,
I noticed an additional missing unmeta() in the fallback code used when
getcwd() returns NULL:

% rmdir $PWD
% pwd
/tmp/ャ»

Oliver

diff --git a/Src/compat.c b/Src/compat.c
index db46852..9041c0b 100644
--- a/Src/compat.c
+++ b/Src/compat.c
@@ -448,7 +448,7 @@ zgetcwd(void)
     }
 #endif /* HAVE_GETCWD */
     if (!ret)
-	ret = pwd;
+	ret = unmeta(pwd);
     if (!ret)
 	ret = dupstring(".");
     return ret;