git/Documentation/pretty-options.txt

--pretty[='<format>']::

	Pretty-print the contents of the commit logs in a given format,
	where '<format>' can be one of 'oneline', 'short', 'medium',
	'full', 'fuller', 'email', 'raw' and 'format:<string>'.
	When omitted, the format defaults to 'medium'.
+
Note: you can specify the default pretty format in the repository
configuration (see linkgit:git-config[1]).

--abbrev-commit::
	Instead of showing the full 40-byte hexadecimal commit object
	name, show only handful hexdigits prefix.  Non default number of
	digits can be specified with "--abbrev=<n>" (which also modifies
	diff output, if it is displayed).
+
This should make "--pretty=oneline" a whole lot more readable for
people using 80-column terminals.

--encoding[=<encoding>]::
	The commit objects record the encoding used for the log message
	in their encoding header; this option can be used to tell the
	command to re-code the commit log message in the encoding
	preferred by the user.  For non plumbing commands this
	defaults to UTF-8.