From: "Dr. Yuan Liu" <yliu@stemnet.nf.ca.remove_this>
Subject: Re: NON-trivial regular expression problem (could not find on google)
Date: Sun, 19 Jan 2003 19:26:56 GMT [thread overview]
Message-ID: <3E2AFD60.4090405@stemnet.nf.ca.remove_this> (raw)
In-Reply-To: wul1iban.fsf@online.no
Peter J. Acklam wrote:
> democrat@india.com (Instant Democracy) wrote:
>>The task is to eliminate patterns such as
>> DIRNAME/../
>>from the path because they are redundant.
>
> Are they really? If DIRNAME is a symlink, then there is no
> guarantee that these two point to the same place:
>
> foo/bar/..
> foo
>
> You *must* ensure that DIRNAME is not a symlink before you
> simplify the pathnames like this.
This seems to depend on the shell. Only C-ish shells will turn symlinks
into real path and cause a problem. Bournish and Kornish shells all
stick with the symbolic path, i.e., foo/bar/.. is always foo.
Yuan Liu
next prev parent reply other threads:[~2003-01-19 19:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-18 20:19 NON-trivial regular expression problem (could not find on google) Instant Democracy
2003-01-18 21:38 ` Harry Putnam
2003-01-18 21:46 ` Kai Großjohann
2003-01-18 22:52 ` AW
2003-01-18 23:03 ` Edi Weitz
2003-01-19 0:27 ` Larry Clapp
2003-01-19 0:36 ` Dr. Yuan Liu
2003-01-19 0:53 ` John W. Krahn
2003-01-19 1:05 ` William Park
2003-01-19 12:17 ` Peter J. Acklam
2003-01-19 19:26 ` Dr. Yuan Liu [this message]
2003-01-20 9:15 ` Peter J. Acklam
2003-01-24 18:56 ` Yuan Liu
2003-01-24 11:20 ` Bruce Barnett
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3E2AFD60.4090405@stemnet.nf.ca.remove_this \
--to=yliu@stemnet.nf.ca.remove_this \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).