.gitconfig

mpr = "!f() { \
        declare currentBranch=\"$(git symbolic-ref --short HEAD)\"; \
        declare branch=\"${2:-$currentBranch}\"; \
        if [ $(printf \"%s\" \"$1\" | grep '^[0-9]\\+$' > /dev/null; printf $?) -eq 0 ]; then \
            git fetch origin refs/pull/$1/head:pr/$1 && \
            git checkout -B $branch && \
            git rebase $branch pr/$1 && \
            git checkout -B $branch && \
            git merge --ff-only pr/$1 && \
            git branch -D pr/$1; \
        fi \
    }; f"