git-commit-vandalism/Documentation/diff-options.txt
Petr Baudis d01d8c6782 Support for pickaxe matching regular expressions
git-diff-* --pickaxe-regex will change the -S pickaxe to match
POSIX extended regular expressions instead of fixed strings.

The regex.h library is a rather stupid interface and I like pcre too, but
with any luck it will be everywhere we will want to run Git on, it being
POSIX.2 and all. I'm not sure if we can expect platforms like AIX to
conform to POSIX.2 or if win32 has regex.h. We might add a flag to
Makefile if there is a portability trouble potential.

Signed-off-by: Petr Baudis <pasky@suse.cz>
2006-04-04 13:44:15 -07:00

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-p::
Generate patch (see section on generating patches)
-u::
Synonym for "-p".
-z::
\0 line termination on output
--name-only::
Show only names of changed files.
--name-status::
Show only names and status of changed files.
--full-index::
Instead of the first handful characters, show full
object name of pre- and post-image blob on the "index"
line when generating a patch format output.
--abbrev[=<n>]::
Instead of showing the full 40-byte hexadecimal object
name in diff-raw format output and diff-tree header
lines, show only handful hexdigits prefix. This is
independent of --full-index option above, which controls
the diff-patch output format. Non default number of
digits can be specified with --abbrev=<n>.
-B::
Break complete rewrite changes into pairs of delete and create.
-M::
Detect renames.
-C::
Detect copies as well as renames.
--diff-filter=[ACDMRTUXB*]::
Select only files that are Added (`A`), Copied (`C`),
Deleted (`D`), Modified (`M`), Renamed (`R`), have their
type (mode) changed (`T`), are Unmerged (`U`), are
Unknown (`X`), or have had their pairing Broken (`B`).
Any combination of the filter characters may be used.
When `*` (All-or-none) is added to the combination, all
paths are selected if there is any file that matches
other criteria in the comparison; if there is no file
that matches other criteria, nothing is selected.
--find-copies-harder::
For performance reasons, by default, -C option finds copies only
if the original file of the copy was modified in the same
changeset. This flag makes the command
inspect unmodified files as candidates for the source of
copy. This is a very expensive operation for large
projects, so use it with caution.
-l<num>::
-M and -C options require O(n^2) processing time where n
is the number of potential rename/copy targets. This
option prevents rename/copy detection from running if
the number of rename/copy targets exceeds the specified
number.
-S<string>::
Look for differences that contain the change in <string>.
--pickaxe-all::
When -S finds a change, show all the changes in that
changeset, not just the files that contain the change
in <string>.
--pickaxe-regex::
Make the <string> not a plain string but an extended POSIX
regex to match.
-O<orderfile>::
Output the patch in the order specified in the
<orderfile>, which has one shell glob pattern per line.
-R::
Swap two inputs; that is, show differences from index or
on-disk file to tree contents.
For more detailed explanation on these common options, see also
link:diffcore.html[diffcore documentation].