`--ignore-all-space`::
	Ignore whitespace when comparing lines.  This ignores
	differences even if one line has whitespace where the other
	line has none.

`--ignore-blank-lines`::
	Ignore changes whose lines are all blank.


`-I<regex>`::
`--ignore-matching-lines=<regex>`::
	Ignore changes whose all lines match _<regex>_.  This option may
	be specified more than once.

`--inter-hunk-context=<number>`::
	Show the context between diff hunks, up to the specified _<number>_
	of lines, thereby fusing hunks that are close to each other.
	Defaults to `diff.interHunkContext` or 0 if the config option
	is unset.

`-W`::
`--function-context`::
	Show whole function as context lines for each change.
	The function names are determined in the same way as
	`git diff` works out patch hunk headers (see "Defining a
	custom hunk-header" in linkgit:gitattributes[5]).

ifndef::git-format-patch[]
ifndef::git-log[]
`--exit-code`::
	Make the program exit with codes similar to `diff`(1).
	That is, it exits with 1 if there were differences and
	0 means no differences.

`--quiet`::
	Disable all output of the program. Implies `--exit-code`.
	Disables execution of external diff helpers whose exit code
	is not trusted, i.e. their respective configuration option
	`diff.trustExitCode` or ++diff.++__<driver>__++.trustExitCode++ or
	environment variable `GIT_EXTERNAL_DIFF_TRUST_EXIT_CODE` is
	false.
endif::git-log[]
endif::git-format-patch[]

`--ext-diff`::
	Allow an external diff helper to be executed. If you set an
	external diff driver with linkgit:gitattributes[5], you need
	to use this option with linkgit:git-log[1] and friends.

`--no-ext-diff`::
	Disallow external diff drivers.

`--textconv`::
`--no-textconv`::
	Allow (or disallow) external text conversion filters to be run
	when comparing binary files. See linkgit:gitattributes[5] for
	details. Because textconv filters are typically a one-way
	conversion, the resulting diff is suitable for human
	consumption, but cannot be applied. For this reason, textconv
	filters are enabled by default only for linkgit:git-diff[1] and
	linkgit:git-log[1], but not for linkgit:git-format-patch[1] or
	diff plumbing commands.


`--ignore-submodules[=(none|untracked|dirty|all)]`::
	Ignore changes to submodules in the diff generation. `all` is the default.
	Using `none` will consider the submodule modified when it either contains
	untracked or modified files or its `HEAD` differs from the commit recorded
	in the superproject and can be used to override any settings of the
	`ignore` option in linkgit:git-config[1] or linkgit:gitmodules[5]. When
	`untracked` is used submodules are not considered dirty when they only
	contain untracked content (but they are still scanned for modified
	content). Using `dirty` ignores all changes to the work tree of submodules,
	only changes to the commits stored in the superproject are shown (this was
	the behavior until 1.7.0). Using `all` hides all changes to submodules.

`--src-prefix=<prefix>`::
	Show the given source _<prefix>_ instead of "a/".

`--dst-prefix=<prefix>`::
	Show the given destination _<prefix>_ instead of "b/".

`--no-prefix`::
	Do not show any source or destination prefix.

`--default-prefix`::
	Use the default source and destination prefixes ("a/" and "b/").
	This overrides configuration variables such as `diff.noprefix`,
	`diff.srcPrefix`, `diff.dstPrefix`, and `diff.mnemonicPrefix`
	(see linkgit:git-config[1]).

`--line-prefix=<prefix>`::
	Prepend an additional _<prefix>_ to every line of output.

`--ita-invisible-in-index`::
	By default entries added by `git add -N` appear as an existing
	empty file in `git diff` and a new file in `git diff --cached`.
	This option makes the entry appear as a new file in `git diff`
	and non-existent in `git diff --cached`. This option could be
	reverted with `--ita-visible-in-index`. Both options are
	experimental and could be removed in future.

For more detailed explanation on these common options, see also
linkgit:gitdiffcore[7].