__git_ps1 not found after upgrade to Fedora 18

If you have enabled git information in the shell prompt (like branch name, working tree status, etc.) [1], an upgrade to F18 breaks this functionality.  What’s worse, __git_ps1 (a shell function) isn’t found, and a yum plugin goes looking for a matching package name to install, making running any command on the shell *very* slow.

A workaround, till the bug is fixed, is to do:

ln -s /usr/share/git-core/contrib/completion/git-prompt.sh  /etc/profile.d/

Bug 878428, if you want to track progress.

[1] To add such git information in the shell display (for bash), add this to your .bashrc file:

export PS1='\[\033[00;36m\]\u@\h\[\033[00m\]:\[\033[01;34m\] \w\[\033[00m\]$(__git_ps1 " (%s)")\$ '

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