Red Hat Bugzilla – Bug 886912
RFE: bash-completion for dnf
Last modified: 2013-08-13 11:08:21 EDT
Description of problem:
Please, provide bash completion configuration for Dnf. Yum has it. ;-)
Version-Release number of selected component (if applicable):
Workaround if yum completion is available:
$ complete -F _yum -o filenames dnf
Thanks for the report.
It's true that bash completion has been dropped from DNF for now: one problem is that there's quite a large cost of loading the package database with libsolv, which is typically balanced by fast querying/depsolving during a typical DNF run. In case of bash completion however we'd only use it to fetch provide names and then throw away: there would be some delay (2 or 3 seconds) after pressing <tab> before seeing the shell react with possible completions.
Workarounds I can think of are all hackish: have a stripped down version of the libsolv cache specifically for this purpose, or maybe generate a text file with a list of provides.
Either way, this is definitely coming much later.
I will add my 2 cents;
completions for options and commands are good things. However I don't think it is a good thing for package names completions. One reason is that it takes a lot of time. Another reason would be memory consumption.
I can imagine a situation where bash will go out of memory, but ok, most probably there will not be millions of packages...
I agree with Roman. I often happen to initiate package name completion by mistake, then you have to wait or press ^C and write the whole command again. There could be an environmental variable to change this behavior.
(not working on this now)
Hm, OTOH, the solution is hackish, not very useful and the job is not planned. I'm closing this.