$_ doesn't work

[elementaryBot]

$_ does not work in Terminal 0.4

Steps

1. cd Downlaods
2. cd $_

Error Message

bash: cd: __bp_preexec_invoke_exec: No such file or directory

Launchpad Details: #LP1628992 Jahdo Lee - 2016-09-29 16:21:55 +0000

[elementaryBot]

Hello,

Can you clarify what is the expected behavior?

Launchpad Details: #LPC Zisu Andrei - 2016-09-29 19:07:08 +0000

[elementaryBot]

$_ means the last used file path.

for example,

ls wordpress-4.6.zip && unzip -l $_

same as

ls wordpress-4.6.zip && unzip -l !#:1

Launchpad Details: #LPC Jahdo Lee - 2016-09-30 06:12:01 +0000

[elementaryBot]

Apologies I have not asked this before, but can you give an example of a terminal in which this works?

Launchpad Details: #LPC Zisu Andrei - 2016-10-01 21:05:38 +0000

[elementaryBot]

P.R.C National Day 10.1 - 10.7

it works in Gnome-terminal in Ubuntu 16.04, Terminal/iTerm2 in Mac OS X

Oh, it occurs to me that I use zsh, not bash, in there environments.

Launchpad Details: #LPC Jahdo Lee - 2016-10-10 05:54:07 +0000

[ghost]

$_ is available in bash as documented here.

That said, I don't think this is a problem with the terminal app, but rather with the "bash-preexec" script included with elementary (/etc/bash-preexec). This also appears to be fixed in more recent versions of 'bash-preexec'.

[danirabbit]

It looks like we added bash-prexec in a patch here: eb32017

So, moving to os-patches since that's where this file comes from. This patch probably needs to either be dropped completely or just rebased on the upstream version as implied by this tweet

[ryonakano]

Linking the upstream issue here: rcaloras/bash-preexec#39

We can either cherry-pick the upstream fix or rebase on latest released upstream version, but I think the latter is better because our bash_preexec is old (0.2.1) and it might be impossible to simply cherry-pick the fix to our version.

[ryonakano]

Closing as fixed in #295