Re: mkdir builtin and $'\0'

[Peter Stephenson <p.stephenson@xxxxxxxxxxx>]

On Tue, 18 Aug 2015 17:20:40 +0100
Stephane Chazelas <stephane.chazelas@xxxxxxxxx> wrote:
> 2015-08-18 10:19:04 +0100, Stephane Chazelas:
> [...]
> > A bit worse:
> > 
> > $ strace -e chdir zsh -c "cd $'a\0b'; print -r -- \$PWD; pwd"
> > chdir("/export/home/stephane/a")        = -1 ENOENT (No such file or directory)
> > chdir("a\203 b")                        = 0

Looks like that's this one (igroning for now the silent use of embedded
nulls).

diff --git a/Src/compat.c b/Src/compat.c
index b3a8b06..a0ce182 100644
--- a/Src/compat.c
+++ b/Src/compat.c
@@ -465,7 +465,7 @@ zchdir(char *dir)
     int currdir = -2;
 
     for (;;) {
-	if (!*dir || chdir(dir) == 0) {
+	if (!*dir || chdir(unmeta(dir)) == 0) {
 #ifdef HAVE_FCHDIR
            if (currdir >= 0)
                close(currdir);

pws