in ~/.login_conf.
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if it is called from a process
with issetugid() true.
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it if it depends on a traditional cpp port.
A further point of confusion is that things that want a traditional
cpp in fact want an equivalent of gcpp -traditional. This is in fact
the point of tradcpp and why the old preprocessors do not work.
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jobs | cat work, that can also be explained using this
rule.
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On Tue, May 21, 2013 at 11:06:39AM -0400, John Baldwin wrote:
On Monday, May 20, 2013 5:47:31 pm Jilles Tjoelker wrote:
The below patch allows deleting the pathname given to find itself:
Index: usr.bin/find/function.c
(1, -delete: %s: relative path potentially not safe,
entry-fts_accpath);
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is userland-kernel and the other kernel-userland, they could for
neatness reuse the same bit field.
I think it would be consistent with other EV_* to use the same name and
value for both.
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to it.
Alternatively, you may find a different way to get rid of your stale
worker processes. For example, before invoking shmctl(IPC_RMID), set a
flag inside the memory segment that all workers should exit and activate
whatever mechanism you use for telling the workers that they need to do
something.
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not even affect the exit status and all
files not under the mount point are removed.
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-execdir.
I'm not entirely sure about this because the rm(1) patch is simple and
the new syntax is fairly clear.
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On Mon, Apr 22, 2013 at 08:31:18PM +0300, Konstantin Belousov wrote:
On Sun, Apr 21, 2013 at 11:02:43PM +0200, Jilles Tjoelker wrote:
On Sat, Apr 20, 2013 at 12:48:39AM +0200, Jilles Tjoelker wrote:
I'm also working on pipe2() (using linuxulator work) and dup3() (patch
from Jukka
On Sat, Apr 20, 2013 at 12:48:39AM +0200, Jilles Tjoelker wrote:
I'm also working on pipe2() (using linuxulator work) and dup3() (patch
from Jukka A. Ukkonen).
This is an implementation of pipe2. As with the accept4 patch, make
sysent needs to be run in sys/kern and sys/compat/freebsd32
2e410d9260d12328b689b0938e09d09649b0460a
Author: Jilles Tjoelker jil...@stack.nl
Date: Sat Mar 30 21:44:14 2013 +0100
Add accept4() system call.
diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index fef0f3c..105f469 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys
.
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smaller. The proposal should list
concrete parts.
* Find variables and functions that are required only during kernel
initialization, place them in a special section and add this section
to the free memory pool after kernel initialization.
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things about collation order. You may not have detected
this because FreeBSD does not implement LC_COLLATE for multibyte locales
yet.
PS: Who wrote tr -C and how can I contact the author?
You can read the Subversion logs but people may no longer be around.
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retried)
except when lingering on close (SO_LINGER) so this should be fairly
safe.
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implementation such as in FreeBSD 9.0 or newer and used
properly, it allows avoiding the resource leak that may happen when
calling longjmp() or pthread_exit() in a signal handler just after
accept() has created a new socket.
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On Mon, Mar 18, 2013 at 10:59:57PM +0200, Konstantin Belousov wrote:
On Sun, Mar 17, 2013 at 10:23:53PM +0100, Jilles Tjoelker wrote:
Here are some more modifications to allow creating file descriptors with
close-on-exec set. Like in linux/glibc, SOCK_CLOEXEC and SOCK_NONBLOCK
can be OR'ed
) {
+ (void) fo_ioctl(fp1, FIONBIO, fflag, td-td_ucred, td);
+ (void) fo_ioctl(fp2, FIONBIO, fflag, td-td_ucred, td);
+ }
fdrop(fp1, td);
fdrop(fp2, td);
return (0);
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On Thu, Feb 28, 2013 at 12:21:44AM +0200, Konstantin Belousov wrote:
On Wed, Feb 27, 2013 at 10:31:42PM +0100, Jilles Tjoelker wrote:
While testing recent changes to opendir(), I noticed that fstatfs() does
not return the MNT_UNION flag for a -t nullfs -o union mount. As a
result, opendir
work correctly in this regard.
The below patch passes through just the MNT_UNION flag of the nullfs
mount itself. Perhaps more flags should be passed through.
commit fce32a779af4eb977c9b96feb6e4f811d89f2881
Author: Jilles Tjoelker jil...@stack.nl
Date: Sat Feb 23 22:22:39 2013 +0100
nullfs
-timeout.tv_sec == -1) {
+ continue;
+ } else if (err != 0) {
+ return (err);
+ }
+ }
+ }
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() fails.
A smarter internal interface to the hash table would avoid freeing and
reallocating hash table entries here (which might fail).
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is some form of philosophical correctness.
For ports this may be a good way to keep static linking working after
fixing overlinking caused by libtool's dependency_libs in .la files.
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);
with error checking against some_ptr instead of error.
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, pthread_create);
filestat_loop();
return 0;
}
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On Sun, Oct 14, 2012 at 04:55:07PM -0400, Eitan Adler wrote:
On 14 October 2012 10:42, Jilles Tjoelker jil...@stack.nl wrote:
Because C99 does not specify threading, it allows these transformations.
In C11, they are forbidden. Passing -pthread disables them as well.
Is the man page wrong
is written
concurrently.
Because C99 does not specify threading, it allows these transformations.
In C11, they are forbidden. Passing -pthread disables them as well.
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frameworks such as
PAM which are not async-signal-safe and certainly not vfork-safe.
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On Tue, Aug 28, 2012 at 02:03:22PM +0300, Konstantin Belousov wrote:
On Sat, Aug 25, 2012 at 12:16:55AM +0200, Jilles Tjoelker wrote:
Not exporting .cerror causes it to be jumped to directly instead of via
the PLT.
The below patch is for i386 only and also takes advantage of .cerror's
On Sun, Aug 19, 2012 at 03:26:36PM +0300, Konstantin Belousov wrote:
On Fri, Aug 17, 2012 at 06:08:47PM +0200, Jilles Tjoelker wrote:
On Fri, Aug 17, 2012 at 03:43:12PM +0300, Konstantin Belousov wrote:
On Fri, Aug 17, 2012 at 12:39:33AM +0200, Jilles Tjoelker wrote:
On Thu, Aug 16, 2012
be the return address. */
- jb 1f
+ jb HIDENAME(cerror)
ret
-1:
- PIC_PROLOGUE
- jmp PIC_PLT(HIDENAME(cerror))
END(syscall)
.section .note.GNU-stack,,%progbits
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On Fri, Aug 17, 2012 at 03:43:12PM +0300, Konstantin Belousov wrote:
On Fri, Aug 17, 2012 at 12:39:33AM +0200, Jilles Tjoelker wrote:
On Thu, Aug 16, 2012 at 02:44:26PM +0300, Konstantin Belousov wrote:
BTW, returning to Jilles proposal, can we call vfork() only for
single-threaded parent
, the kernel
could map caught signals to the default action for processes with
P_PPWAIT (just like it does not stop such processes because of signals
or TTY job control).
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requested the _Fork() function because an existing application
deadlocked when calling fork() from a signal handler.
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On Fri, Aug 10, 2012 at 10:16:04AM +0800, David Xu wrote:
On 2012/08/09 18:56, Jilles Tjoelker wrote:
On Mon, Aug 06, 2012 at 11:25:35AM +0300, Konstantin Belousov wrote:
On Sun, Aug 05, 2012 at 11:54:32PM +0200, Jilles Tjoelker wrote:
On Mon, Jul 30, 2012 at 01:53:03PM +0300, Konstantin
On Mon, Aug 06, 2012 at 11:25:35AM +0300, Konstantin Belousov wrote:
On Sun, Aug 05, 2012 at 11:54:32PM +0200, Jilles Tjoelker wrote:
On Mon, Jul 30, 2012 at 01:53:03PM +0300, Konstantin Belousov wrote:
On Mon, Jul 30, 2012 at 12:24:08PM +0200, Jilles Tjoelker wrote:
People sometimes use
On Mon, Jul 30, 2012 at 01:53:03PM +0300, Konstantin Belousov wrote:
On Mon, Jul 30, 2012 at 12:24:08PM +0200, Jilles Tjoelker wrote:
People sometimes use system() from large address spaces where it would
improve performance greatly to use vfork() instead of fork().
A simple approach
, oldsigblock, NULL);
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On Wed, Jun 06, 2012 at 01:20:12PM +0200, Pawel Jakub Dawidek wrote:
On Tue, Jun 05, 2012 at 11:31:01PM +0200, Jilles Tjoelker wrote:
Also, the attack surface of such a daemon may be smaller than that of a
setuid/setgid program.
Really? I don't see that. With current patch and setgid
for the user.)
Also, the attack surface of such a daemon may be smaller than that of a
setuid/setgid program.
Alternatively, the daemon could be a setgid program that is spawned by
the utmpx APIs when needed.
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address.
Try, for example,
procstat -v $$
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things in procstat do not have ps keywords.
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-c 'echo $*; echo exit 1' worker || echo $?
1
1
such that any non-0 exit code in a child process would cause xargs to stop
processing. seems like this would be a nice feature to have.
As per xargs(1), you can do this by having the command exit on a signal
or with a value of 255.
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that the old implementation is still present as well, for
compatibility with old binaries.
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an earlier version of this patch
on some sort of ARM board and reports an improvement in boot time from
54 to 51 seconds, and a large difference in microbenchmarks.
commit f55a350fa9c3792e10f93160a93d016a7bfdd630
Author: Jilles Tjoelker jil...@stack.nl
Date: Mon May 30 00:31:45 2011 +0200
sh: Use
On Wed, Jan 25, 2012 at 11:54:46PM +0100, Jilles Tjoelker wrote:
[snip]
x micro-vfork-timings1-n
+ micro-vfork-timings1-y
On Wed, Jan 18, 2012 at 08:46:18PM -0500, Matthew Story wrote:
On Wed, Jan 18, 2012 at 5:16 PM, Jilles Tjoelker jil...@stack.nl wrote:
POSIX itself has gradually adopted ksh features, so seeing more of them
in future is not unlikely. Most of the new language features in 9.0 are
either from
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in the first place.
Given that the AUXV information seems to be used by debuggers only
anyway, I think it would be good to move it to p_candebug() now.
The full virtual memory maps (KERN_PROC_VMMAP, procstat -v) are already
under p_candebug().
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, on the other hand it also seems
to be used by debuggers only.
With stack ASLR, the address will not be the same for every process of
the same ABI and will be sensitive information. Therefore I think this
should be locked down too.
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be stored in /var/run, which is cleared at boot.
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.
The xlocale.h header can then be an empty file.
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-2008 while the MSG_NOSIGNAL
flag to send() is. It may be better to replace the write() call with
send() with the MSG_NOSIGNAL flag and drop the setsockopt().
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case, except
for named semaphores in 8.x and earlier.)
Or if returning EBUSY is acceptable when the resource is in use by
$whatever, maybe you just need a boolean variable.
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a resync step that is expensive both in CPU and
programmer time.
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);
- (void)_close(fd);
errno = saved_errno;
return (NULL);
}
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you request non-blocking using their new accept4() call).
Because this portability issue can be very subtle, I suggest not blindly
relying on it.
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of microseconds in a struct timeval must be nonnegative and
less than one million (likewise, the number of nanoseconds in a struct
timespec must be nonnegative and less than 1000 million).
FreeBSD checks this strictly in most functions.
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to finish.
*
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On Tue, Jun 07, 2011 at 04:24:43AM +0400, Andrey Chernov wrote:
On Tue, Jun 07, 2011 at 12:41:05AM +0200, Jilles Tjoelker wrote:
There is a related issue with ranges in regular expressions, glob and
fnmatch (likewise unspecified by POSIX outside the POSIX locale), but
this is less likely
of
locale.
That would be rather ugly.
If tr a-z A-Z is supposed to be deceiving in some locales, then let it
remain so unconditionally.
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;
- if (n 1)
- mergesort(s-set, n, sizeof(*(s-set)), charcoll);
+ s-cnt = stopval - s-lastch + 1;
+ s-state = RANGE;
+ --s-lastch;
return (1);
}
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case of int64_t, it would seem that long long is better than intmax_t,
as it is possibly shorter but still guaranteed large enough by C99, but
there are objections against this that I do not understand.
Also, note the format strings for size_t, %zu, and for ptrdiff_t, %td.
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for
processes that have already terminated.
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effect: it
resets the state of the sequential access detection heuristic but does
not disable it.
The O_DIRECT open(2) flag has an effect similar to what
POSIX_FADV_NOREUSE should do, except that it changes semantics by adding
alignment restrictions.
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bugs.
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iconv(3) but as long as it is not
unconditionally available in base or if it is not supposed to be used,
the codepoints can be encoded in UTF-8 for UTF-8 locales, leaving other
locales with question marks.
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Index: parser.h
char *const [], other than via a cast.
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:
Missing POSIX commands found before PATH (regular builtins):
newgrp
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Index: bin/sh/exec.c
===
--- bin/sh/exec.c (revision 216690)
+++ bin/sh/exec.c (working copy)
@@ -92,7 +92,6 @@
static struct tblentry
is not even used during
build!
So I guess I'm staring at dead code here, any kvm people around that can
clue me in?
It is a while ago that I last used this, but ps and fstat definitely
worked on crashdumps, to some extent. /usr/sbin/crashinfo uses this.
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and is very simplistic,
perhaps it is better to stub it out and not change sh.
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the result in and using eval, extending setvar in some strange way
or implementing another ksh93 extension, namerefs.
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:)...
local might be worth checking for as the original Bourne shell and ksh93
don't know it.
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will need devel/linux_kdump from
ports to decode the resulting ktrace.out.
Alternatively, if you're familiar with dtrace, you could try that.
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if the uid/gid fields are useful at all for ar archives. Ar
archives are usually not extracted, and when they are, the current
user's values seem good enough. The uid/gid also prevent exactly
reproducible builds (together with the timestamp).
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not involve subversion?
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the output to a file
only; a developer can use tail -f to follow the build if necessary.
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, everything goes
fine. Any ideas?
Patch is here: http://kovesdan.org/patches/iconv-libc.diff
There is a .include bsd.lib.mk in iconv/Makefile.inc, what happens
if you take that out?
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mknod(8). Only device nodes in devfs can be used to
access devices.
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)
Or a jail ? (I dont really want that level of encapsulation ).
Mount devfs in your chroot. Then use devfs(8) to limit what's visible in
that particular devfs, if you want.
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On Mon, Apr 26, 2010 at 08:57:31PM +0300, Eitan Adler wrote:
This path adds a -q flag to stop pathchk from outputting error
messages but still return an error code.
Why do you need this; can't you do something like
pathconf -- $pathname 2/dev/null
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this be fixed in some
other way?
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On Fri, Apr 23, 2010 at 04:17:36PM +0200, Jilles Tjoelker wrote:
The changes to use NLS for strerror sometimes cause one of my virtual
machines to deadlock. This virtual machine runs 9-CURRENT, acquires its
IP address via DHCP (virtualbox host-only networking), has no default
route and has
masks so the bad
situation does not occur (note that the signal mask is inherited across
pthread_create()) and calling fork/execve and managing the child process
exit yourself.
Note that POSIX does not require system() to be thread-safe.
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= pthread_cancel(td);
if (error != 0)
errc(1, error, pthread_cancel);
error = pthread_join(td, NULL);
if (error != 0)
errc(1, error, pthread_join);
}
return 0;
}
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in the process
tree and find a matching one in the accounting file after it finishes.
Am I looking in a right direction or should I try some other way?
Thanks in advance.
Have you looked at audit(4)?
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with
this change will be helpful.
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with the allocation of a buffer of that size using sbuf_new(9)
(and so, malloc(9)).
Some sort of limit seems appropriate, but MAXPHYS seems unrelated, and
if the request is too long it should perhaps just truncate it.
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Jilles Tjoelker
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write access)
Question: why are the values for fts_flags in the public header file
fts.h, even though they are supposedly private?
In case the mailing list eats the patch, it is also available here:
http://www.stack.nl/~jilles/unix/fts-logical-chdir.patch
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Jilles Tjoelker
Index: include/fts.h
.
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will allow sharing the kqueue between the two processes.
As long as the parent process exits quickly, or no tricks with file
descriptor numbers are done, this is pretty safe.
Another fix is to create the kqueue in the child process.
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Jilles Tjoelker
],
+ acl_int-acl_cnt--;
+ bzero(acl_int-acl_entry[j],
sizeof(struct acl_entry));
acl-ats_cur_entry = 0;
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On Sat, Nov 07, 2009 at 03:01:36PM +0200, Kostik Belousov wrote:
On Sat, Nov 07, 2009 at 11:28:32AM +0100, Gary Jennejohn wrote:
On Fri, 6 Nov 2009 23:24:46 +0100
Jilles Tjoelker jil...@stack.nl wrote:
I propose adding a small new utility to /usr/bin: pwait. Similar to the
Solaris
that errno should be used to check for
error conditions (example: readdir).
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, but not in man pages
or other documentation.
Is there recommended way to do this?
Apart from sysv semaphores, perhaps posix named semaphores (sem_open()
etc). These require a 'kldload sem' on older versions though.
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Jilles Tjoelker
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). The SA_SIGINFO flag
can only be set by setting a handler using sigaction(2). (Note, this
does not mean that all signals are queued if SA_SIGINFO is set. It means
that signals may not be queued if SA_SIGINFO is not set.)
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Jilles Tjoelker
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as the
single star -- it's a weird way to escape the star in the patterns.
This is indeed a good workaround.
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