how to re-use existing completion (for example for git) with recent versions of package bash-completion
Add the following lines to your ~/.bashrc:
_completion_loader git
eval $(complete -p git | perl -pe 's/(\s)git$/$1git.home/')
Explanation:
bash-completion uses a dynamic loading of completions since 1.901.90. So, the git compspec unavailable before your typing git,Space,Tab.
Try:
bash
complete -p git # bash: complete: git: no completion specification
git<space><tab>
complete -p git # complete -o bashdefault -o default -o nospace -F __git_wrap__git_main git
_completion_loader git imitates git,Space,Tab (i.e. loads a compspec for git)
complete -p git | perl -pe 's/(\s)git$/$1git.home/' builds a compspec for git.home (replaces git to git.home in a git's compspec)
eval execute the resulting compspec.
Type git.home,Space,pTab. You should see:
popt pull push
But git.home log,Space,Tab produces:
fatal: Not a git repository (or any of the parent directories): .git HEAD
This message is a result of the git completion bug. There is a fix in the upstream: completion: silence "fatal: Not a git repository" error
Looks like another question:)
_githome(){
GIT_DIR=$HOME/.git.home
complete -o default -o nospace -F _git git.home
}
doesn't work as expected. You set GIT_DIR for current session. Try with your solution:
bash
git clone git://git.debian.org/git/bash-completion/bash-completion.git ~/bash-completion
cd ~/bash-completion
git log<space><tab> # completion for current repo
git.home log<space><tab> # completion for GIT_DIR
git log<space><tab> # completion for GIT_DIR
