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'gcd' : Git-Aware 'cd' Relative to Repository Root with Auto-Completion

18 Jan 2010
Posted by Jeet Sukumaran

The following will enable you to have a Git-aware "cd" command with directory path expansion/auto-completion relative to the repository root. You will have to source it into your "~/.bashrc" file, after which invoking "gcd" from the shell will allow you specify directory paths relative to the root of your Git repository no matter where you are within the working tree.

gcd() {
    if [[ $(which git 2> /dev/null) ]]
    then
        STATUS=$(git status 2>/dev/null)
        if [[ -z $STATUS ]]
        then
            return
        fi
        TARGET="./$(git rev-parse --show-cdup)$1"
        #echo $TARGET
        cd $TARGET
    fi
}
_gcd()
{
    if [[ $(which git 2> /dev/null) ]]
    then
        STATUS=$(git status 2>/dev/null)
        if [[ -z $STATUS ]]
        then
            return
        fi
        TARGET="./$(git rev-parse --show-cdup)"
        if [[ -d $TARGET ]]
        then
            TARGET="$TARGET/"
        fi
        COMPREPLY=()
        cur="${COMP_WORDS[COMP_CWORD]}"
        prev="${COMP_WORDS[COMP_CWORD-1]}$2"
        dirnames=$(cd $TARGET; compgen -o dirnames $2)
        opts=$(for i in $dirnames; do  if [[ $i != ".git" ]]; then echo $i/; fi; done)
        if [[ ${cur} == * ]] ; then
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
        fi
    fi
}
complete -o nospace -F _gcd gcd
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