A bash script that ensures all my git aliases are set-up as I like them

git-aliases

#!/usr/bin/env bash
# vim: ts=8 sts=4 et sw=4 sr sta

# only do the updates if this file is newer than our git config file
# (that means we've some something here)
if test $BASH_SOURCE -nt $HOME/.gitconfig; then
    echo "[Updating git aliases...]";

    # exit immediately if we have the lockfile
    if [ -f $HOME/.bashrcd.gitalias.lock ]; then
        echo "[Another terminal is already updating the aliases. Aborting in this terminal.]";
        return;
    fi

    # 'lock' the update in case we're opening multiple terminals at the same
    # time
    if [ "`which git`" -a ! -f $HOME/.bashrcd.gitalias.lock ]; then
    # exit immediately if we have the lockfile
    if [ -f $HOME/.bashrcd.gitalias.lock ]; then
        echo "[Another terminal is already updating the aliases. Aborting in this terminal.]";
        return;
    fi
        date > $HOME/.bashrcd.gitalias.lock;
        git config --global alias.st       status
        git config --global alias.ci       commit
        git config --global alias.br       branch
        git config --global alias.co       checkout
        git config --global alias.df       diff
        git config --global alias.cpick    cherry-pick
        git config --global alias.pr       "pull --rebase"
        git config --global alias.undo     "reset --soft HEAD^"
        git config --global alias.clog     "log --format=' * %s     [%t]' -n 10"
        git config --global alias.staged   "diff --cached"
        git config --global alias.unstaged "diff"
        git config --global alias.amend    "commit --amend"
        git config --global alias.lg       "log -p"
        git config --global alias.lol      "log --graph --decorate --pretty=oneline --abbrev-commit"
        git config --global alias.lola     "log --graph --decorate --pretty=oneline --abbrev-commit --all"
        git config --global alias.ls       "ls-files"
        git config --global alias.refl     "log -g --oneline 'HEAD@{now}' --date=relative"
        git config --global alias.ca       "commit --amend --reuse-message=HEAD"

        git config --global alias.glog     "log --pretty=oneline --topo-order --graph --abbrev-commit --decorate"
        git config --global alias.tree     "log --decorate --topo-order --graph --pretty=format:'%Cred%h%Creset%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold black)[%an]%Creset' --date=relative"
        git config --global alias.tt       "log --decorate --topo-order --graph --pretty=format:'%Cred%h%Creset%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold black)[%an]%Creset' --date=relative -n 10"
        git config --global alias.tree "log --decorate --topo-order --graph --pretty=format:'%Cred%h %Cgreen[%cr] %C(bold black)<%an>%Creset%C(yellow)%d%Creset %s%Creset' --date=relative"
        git config --global alias.tt   "log --decorate --topo-order --graph --pretty=format:'%Cred%h %Cgreen[%cr] %C(bold black)<%an>%Creset%C(yellow)%d%Creset %s%Creset' --date=relative -n 10"

        # http://stackoverflow.com/questions/2500296/can-i-make-fast-forwarding-be-off-by-default-in-git
        if [ -d ./.git ]; then
            git config branch.master.mergeoptions  "--no-ff"
        fi

        # from http://mikewest.org/2011/04/a-quick-git-vim-workflow-tip
        git config --global alias.fshow    "! sh -c 'git show --pretty=\"format:\" --name-only \$1 | grep -v \"^$\" | uniq | sed -e \"s#^#\`git rev-parse --show-toplevel\`/#\"' -"
        git config --global alias.vim      "! sh -c 'vim \`git fshow \$1\`' -"
        git config --global alias.mate     "! sh -c 'mate \`git fshow \$1\`' -"
        git config --global alias.edit     "! sh -c '\$EDITOR \`git fshow \$1\`' -"

        # from gianni
        git config --global alias.cmp       "diff -b --word-diff=color --word-diff-regex='[[:alnum:]_]+|[^[:space:]]'"
        git config --global alias.cmplog    "log -u -b --word-diff=color --word-diff-regex='[[:alnum:]_]+|[^[:space:]]'"
        git config --global alias.cmpshow   "show -u -b --word-diff=color --word-diff-regex='[[:alnum:]_]+|[^[:space:]]'"
        git config --global alias.refl      "log -g --oneline 'HEAD@{now}' --date=relative"
        git config --global alias.st        "status -bs"
        git config --global alias.tracked   "ls-tree --full-name -r --name-only HEAD"
        git config --global alias.logc      "log"

        git config --global push.default current

        # for git send-email; suppress warnings
        git config --global sendemail.confirm auto
        git config --global sendemail.chainreplyto false

        rm $HOME/.bashrcd.gitalias.lock;
    fi
fi

alias git_save_last_sha='_last_commit=$(git log --format=format:%H -n1)';