How to embed bash script directly inside a git alias

git config --global alias.diffall '!sh diffall.sh'

This is redundant in one way. If you are going to add 'diffall.sh' into your $PATH anyway, why not save it as 'git-diffall', and save yourself from declaring an alias. Yes, "git diffall" will run it.

To run commands inside of a git alias, and in particular to pass arguments to those commands, you will likely have to create a temporary function which you then immediately invoke:

$ vim ~/.gitconfig...[alias]    # compare:    foo = "! echo begin arg=$1/$2/end"    foo2 = "!f() { echo "begin arg=$1/$2/end"; }; f"

In this example, the function is probably what you need (and is also more flexible as to what you can do in a single "statement"); and you can probably tell that for both options, the remaining args to the git command are simply passed as args to the alias, regardless if it's "echo" or "f"; invoking the function simply consumes the args, ignoring what's not explicitly used:

$ git foo a b cbegin arg=a/b/end a b c$ git foo2 a b cbegin arg=a/b/end

Another example (lists all aliases, based on matching pattern) (note: you can keep reusing the same function name "f()" throughout the .gitconfig):

[alias]    alias = "!f() { git config --get-regexp "^alias.${1}$" ; }; f"

The first returns the alias for just "foo$", the second for "foo.*":

$ git alias fooalias.foo ! echo begin arg=$1/$2/end$ git alias 'foo.*'alias.foo ! echo begin arg=$1/$2/endalias.foo2 !f() { echo begin arg=$1/$2/end; }; f

(nb: actual results may vary based on shell; I'm using this with bash on Linux, Unix & Cygwin (Windows).)

I couldn't find in documentation, but if you create a script "git-<name>" in path, you can call it with "git name" in your repo.

See:

$ cd ~/bin$ echo "echo I love this log:>pwd>git log --graph  --summary --decorate --all" > git-logg$ chmod +x git-logg$ cd /path/to/your/repo$ git loggI love this log:/path/to/your/repo* commit 3c94be44e4119228cc681fc7e11e553c4e77ad04 (whatever-branch)| Author: myself <my@Laptop.(none)>| Date:   Fri Apr 1 16:47:20 2011 +0200| |     would have been better not to do it at all| ...$

So, you can write any alias you like with this (rather obscure) way too.

Even more you can add autocompletion to that new command defining a function. Info here

$ _git_logg (){  # you can return anything here for the autocompletion for example all the branches  __gitcomp_nl "$(__git_refs)" }