Now over one year after this problem was reported and a patch was provided the ticket is still not assigned to anyone.
This problem is a big pain for Enterprise users and it makes Ubuntu very slow when the terminal is used. Please apply the patch or explain what we can do to get some attention to this problem -- You received this bug notification because you are a member of Tieto, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1390061 Title: bash-completion tilde expansion every time Status in bash-completion package in Ubuntu: Confirmed Bug description: 1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu root@ubuntu1404:~# lsb_release -rd Description: Ubuntu 14.04.1 LTS Release: 14.04 2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center root@ubuntu1404:~# apt-cache policy bash-completion bash-completion: Installed: 1:2.1-4 Candidate: 1:2.1-4 Version table: *** 1:2.1-4 0 500 http://se.archive.ubuntu.com/ubuntu/ trusty/main i386 Packages 100 /var/lib/dpkg/status 3) What you expected to happen When I use bash-completion it should not read the /etc/passwd file or contact the Active directory. It is very hard to see this problem unless you run this on a machine with slow authentication... but the commands below will show if the /etc/passwd or sssd are used by bash_completion or not: root@ubuntu1404:~# strace bash -c ". /etc/bash_completion; quote_readline '/something'; echo" 2>&1 | grep /etc/passwd root@ubuntu1404:~# strace bash -c ". /etc/bash_completion; quote_readline '/something'; echo" 2>&1 | grep sss When the ~ are escaped on line 545 and 547 in /usr/share/bash- completion/bash_completion then bash_completion works as expected. 4) What happened instead Every time you use tab-completion in bash on ubuntu 14.04 it will read the /etc/passwd file and if sssd are installed and configured for Active Directory authentication it will talk to sssd... and this can be slow in some environments. root@ubuntu1404:~# strace bash -c ". /etc/bash_completion; quote_readline '/something'; echo" 2>&1 | grep /etc/passwd open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3 root@ubuntu1404:~# strace bash -c ". /etc/bash_completion; quote_readline '/something'; echo" 2>&1 | grep sss open("/lib/i386-linux-gnu/libnss_sss.so.2", O_RDONLY|O_CLOEXEC) = 3 open("/var/lib/sss/mc/passwd", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3 connect(4, {sa_family=AF_LOCAL, sun_path="/var/lib/sss/pipes/nss"}, 110) = 0 I have made a small patch for this problem and I have not found any side effects: --- /usr/share/bash-completion/bash_completion.orig 2014-11-06 10:36:14.981888369 +0100 +++ /usr/share/bash-completion/bash_completion 2014-11-06 10:36:25.142070963 +0100 @@ -542,9 +542,9 @@ elif [[ $1 == \'* ]]; then # Leave out first character printf -v $2 %s "${1:1}" - elif [[ $1 == ~* ]]; then + elif [[ $1 == \~* ]]; then # avoid escaping first ~ - printf -v $2 ~%q "${1:1}" + printf -v $2 \~%q "${1:1}" else printf -v $2 %q "$1" fi To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bash-completion/+bug/1390061/+subscriptions -- Mailing list: https://launchpad.net/~tieto Post to : [email protected] Unsubscribe : https://launchpad.net/~tieto More help : https://help.launchpad.net/ListHelp
