bash completion bug

[jfoug]

When I start my bash shell, I get this:

bash: /JtR/bleed/run/john.bash_completion: line 565: syntax error near unexpected token `('
bash: /JtR/bleed/run/john.bash_completion: line 565: `      --show=?([Ll]|[Ll][Ee]|[Ll][Ee][Ff]|[Ll][Ee][Ff][Tt]))'

ubuntu-64 in a VM. To install jtr bash completion, I simply added . /JtR/bleed/run/john.bash_completion to my ~/.bashrc file

[frank-dittrich]

What does shopt -p extglob print on your ubuntu system?
On my fedora 20 system I get

(bleeding-jumbo)run $ shopt -p extglob
shopt -s extglob

If you get shopt -u extglob instead, you need to enable extended pattern matching features by running shopt -s extglob before you source john.bash_completion.

[frank-dittrich]

See also section "Prerequisites" of doc/README.bash-completion:

        Prerequisites

The bash completion for john requires bash version >= 4,
and extended pattern matching features enabled.
If the command
        shopt -p extglob
prints
        shopt -s extglob
then the extended pattern matching features are enabled.
If this command
prints
        shopt -u extglob
then they are disabled.

[frank-dittrich]

May be I should add a comment similar to the one in john.bash_completion's lines 12-20 closer to the source code lines which cause the problems when extended pattern matching is disabled, i.e., line 565.

[jfoug]

Extended patterns are turned on, AND I am running 4.3.11(1) bash (with the recent patches).

$ shopt -p extglob
shopt -s extglob


$ bash --version
GNU bash, version 4.3.11(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

[frank-dittrich]

The only explanation is that shopt -s extglob is processed after you sourced john.bash_completion.
Can you put the line

shopt -p extglob

immediately before

. /your_path/john.bash_completion

into your ~/.bashrc file?

I have

shopt -u extglob
shopt -p extglob
. /home/fd/git/JtR/run/john.bash_completion

in my ~/.bashrc now, and I get

[fd@f20xs ~]$ bash
shopt -u extglob
bash: /home/fd/git/JtR/run/john.bash_completion: line 565: syntax error near unexpected token `('
bash: /home/fd/git/JtR/run/john.bash_completion: line 565: `        --show=?([Ll]|[Ll][Ee]|[Ll][Ee][Ff]|[Ll][Ee][Ff][Tt]))'

when I start a new shell or xterm.

[frank-dittrich]

I just tested this with ubuntu 14.10.

Adding

. /home/fd/git/JtR/run/john.bash_completion

at the end of my /home/fd/.bashrc file works for me.
After opening a new terminal, bash completion just works for john.

[magnumripper]

I get a very similar error on Super. It has bash 4.1.2

$ shopt -p extglob
shopt -p extglob
shopt -u extglob
printf "\033]0;%s@%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}"

[magnumripper]

I tried enbling extglob on Super and then source JtR bash completion.

$ ../run/john --t<TAB>bash: _get_comp_words_by_ref: command not found

[frank-dittrich]

looks like bash completion is not installed on super.
Neither /etc/bash_completion nor /usr/share/bash-completion/bash_completion exist.

[frank-dittrich]

On well it should work.

[jfoug]

I put the load line at the bottom of the .bashrc and it is working fine. Gonna mark this as PEBCAK and close it.