emacs bash tab-completion doesn't work for commands with complete scripts in /usr/share/bash-completion/completions/

[GeorgeDunlap]

I'm using emacs with the following two lines in my ~/.emacsrc:

(require 'bash-completion)
(bash-completion-setup)

In an emacs shell window, I noticed that the git tab-complete wasn't working; but the stg tab-complete was. In a normal terminal window, both worked just fine.

After doing some investigation, I discovered that there are two places where completion scripts are kept: /usr/share/bash-completion/completions/ and /etc/bash_completion.d/.

All commands with their completion scripts in /etc/bash_completion.d/ work with tab-complete in an emacs window; this includes stg, grub, &c. All commands with their completion scripts in /usr/share/bash-completion/completions/ don't work with tab-complete in emacs; this includes git, gzip, &c.

Steps to reproduce:
* Add the above two lines to ~/.emacrc
* Start emacs
* Open a shell (M-x shell)
* Type "git check" and then hit tab.

Expected behavior: emacs completes it to "git checkout"

Actual behavior: emacs says "No completions".

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: emacs 45.0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Sep 17 11:32:34 2014
InstallationDate: Installed on 2012-03-26 (904 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: emacs-defaults
UpgradeStatus: Upgraded to trusty on 2014-09-04 (12 days ago)

[era (era)]

bash-completion is not a feature which ships with emacs24. Where did you obtain this package? You should probably report this bug to them instead.

If you can suggest something to fix in emacs24 as shipped by Ubuntu, please update your bug report and change its Status back to New. Thanks.

[era (era)]

Looks like https://github.com/szermatt/emacs-bash-completion/issues/5

[GeorgeDunlap (dunlapg)]

Ah, thanks -- yep, that looks like just the issue.

Ubuntu does seem to ship bash-completion (in a package named bash-completion), looks like inherited directly from Debian. Let me know if you need me to try to duplicate this and report this upstream.

[GeorgeDunlap (dunlapg)]

Sorry -- got confused there for a second... Yes, I apparently forgot that I had installed bash-completion.el manually. This is probably not a bug in Ubuntu then; let me leave this in "incomplete" temporarily and I'll close it if it's confirmed.

[GeorgeDunlap (dunlapg)]

Ok, I pulled from the branch mentioned in that error report, and things seem fixed now. Thanks for finding that bug for me -- my google-fu completely failed me.