Syntax for Git aliases with multiple commands

Question

I want to create a Git alias to perform multiple commands, but I cant find documentation on how this is done.

1. What is the syntax for Git aliases with multiple

Answer 1

Say the commands are echo a and echo b (not a and b), to add multiple commands for an alias q:

From the command line:
git config alias.q '!echo a; echo b'

Directly in the configuration file:

[alias]
    q = "!echo a; echo b"

For more complex things, define a shell function and call it:
'!f() { echo a ; echo b ; }; f'

For passing parameters to the commands see:
Git alias with positional parameters
Git Alias - Multiple Commands and Parameters

Based in Jonathan Wakely's comment