Bug 478784 - Bash-completion during yum install hangs
Bash-completion during yum install hangs
Product: Fedora
Classification: Fedora
Component: bash-completion (Show other bugs)
All Linux
low Severity medium
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Assigned To: Ville Skyttä
Fedora Extras Quality Assurance
Depends On:
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Reported: 2009-01-04 19:44 EST by Joseph Smidt
Modified: 2009-11-19 12:06 EST (History)
1 user (show)

See Also:
Fixed In Version: 1.0-2
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2009-11-19 12:06:17 EST
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Attachments (Terms of Use)
Speed up yum install completions (428 bytes, patch)
2009-01-05 11:52 EST, Ville Skyttä
no flags Details | Diff

  None (edit)
Description Joseph Smidt 2009-01-04 19:44:12 EST
Description of problem:
I found this wonderful guide which helps set up a more comprehensive bash completion: http://sexysexypenguins.com/2007/10/24/pow-bash-completion-bash-auto-completion-in-fedora-using-yum-and-more/

I install the package bash-completion and tested it out typing:
# yum -y install bal[Tab]

at which point my terminal just hangs.  I not only do I not get the desired output, but I can no longer type or delete on the command line.  when I hit Ctrl-C to jump out of the hanging, I get this error: Exiting on Broken Pipe.

Version-Release number of selected component (if applicable):

How reproducible:
Install the package bash-completion.  Type: # yum -y install bal[Tab] and your terminal will hang.  Type Ctrl-C and get the broken socket error.

Steps to Reproduce:
1. Install the package bash-completion.
2. Type: # yum -y install bal[Tab] and your terminal will hang.
3. Type Ctrl-C and get the broken socket error.
Actual results:

Expected results:
I expected to see this: ballbuster.i386  ballz.i386 balsa.i386

Additional info:

bash-completion seem to work great for all other commands I have tried, man, git, etc...
Comment 1 Ville Skyttä 2009-01-05 11:52:24 EST
Created attachment 328213 [details]
Speed up yum install completions

It doesn't hang for me, but it sure is slow.  This is primarily because bash_completion invokes "yum -C list" to get the completions, and that just takes a long time.  To watch what bash_completion is doing, do "set -x" in the bash shell, then try the completion in that same shell (and watch "top" in another if interested).

However, the attached patch speeds up most "yum install" (and deplist) cases quite a bit for me, could you try it out?  The case to which this has much less significant effect is "yum install [tab]", i.e. without typing anything from the package name, but I don't think there's much that can be done about that in bash_completion.

Note that after applying the patch you'll need to open a new shell to get the patched bash_completion loaded (and possibly source it), verify with "set -x" that it instead of "yum -C list" it invokes something starting with "yum -qC list available".
Comment 2 Bug Zapper 2009-11-18 05:39:23 EST
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Comment 3 Ville Skyttä 2009-11-19 12:06:17 EST
Should be fixed in 1.0-2 some time ago.

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