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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | PRETTY FORMATS | COMMON DIFF OPTIONS | GENERATING PATCHES WITH -P | COMBINED DIFF FORMAT | EXAMPLES | DISCUSSION | GIT | COLOPHON |
GIT-SHOW(1) Git Manual GIT-SHOW(1)
git-show - Show various types of objects
git show [options] <object>...
Shows one or more objects (blobs, trees, tags and commits).
For commits it shows the log message and textual diff. It also
presents the merge commit in a special format as produced by git
diff-tree --cc.
For tags, it shows the tag message and the referenced objects.
For trees, it shows the names (equivalent to git ls-tree with
--name-only).
For plain blobs, it shows the plain contents.
The command takes options applicable to the git diff-tree command to
control how the changes the commit introduces are shown.
This manual page describes only the most frequently used options.
<object>...
The names of objects to show. For a more complete list of ways to
spell object names, see "SPECIFYING REVISIONS" section in
gitrevisions(7).
--pretty[=<format>], --format=<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, format:<string> and tformat:<string>. When
<format> is none of the above, and has %placeholder in it, it
acts as if --pretty=tformat:<format> were given.
See the "PRETTY FORMATS" section for some additional details for
each format. When =<format> part is omitted, it defaults to
medium.
Note: you can specify the default pretty format in the repository
configuration (see git-config(1)).
--abbrev-commit
Instead of showing the full 40-byte hexadecimal commit object
name, show only a partial 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.
--no-abbrev-commit
Show the full 40-byte hexadecimal commit object name. This
negates --abbrev-commit and those options which imply it such as
"--oneline". It also overrides the log.abbrevCommit variable.
--oneline
This is a shorthand for "--pretty=oneline --abbrev-commit" used
together.
--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. Note that if an object claims to be encoded in X and we
are outputting in X, we will output the object verbatim; this
means that invalid sequences in the original commit may be copied
to the output.
--expand-tabs=<n>, --expand-tabs, --no-expand-tabs
Perform a tab expansion (replace each tab with enough spaces to
fill to the next display column that is multiple of <n>) in the
log message before showing it in the output. --expand-tabs is a
short-hand for --expand-tabs=8, and --no-expand-tabs is a
short-hand for --expand-tabs=0, which disables tab expansion.
By default, tabs are expanded in pretty formats that indent the
log message by 4 spaces (i.e. medium, which is the default,
full, and fuller).
--notes[=<treeish>]
Show the notes (see git-notes(1)) that annotate the commit, when
showing the commit log message. This is the default for git log,
git show and git whatchanged commands when there is no --pretty,
--format, or --oneline option given on the command line.
By default, the notes shown are from the notes refs listed in the
core.notesRef and notes.displayRef variables (or corresponding
environment overrides). See git-config(1) for more details.
With an optional <treeish> argument, use the treeish to find the
notes to display. The treeish can specify the full refname when
it begins with refs/notes/; when it begins with notes/, refs/ and
otherwise refs/notes/ is prefixed to form a full name of the ref.
Multiple --notes options can be combined to control which notes
are being displayed. Examples: "--notes=foo" will show only notes
from "refs/notes/foo"; "--notes=foo --notes" will show both notes
from "refs/notes/foo" and from the default notes ref(s).
--no-notes
Do not show notes. This negates the above --notes option, by
resetting the list of notes refs from which notes are shown.
Options are parsed in the order given on the command line, so
e.g. "--notes --notes=foo --no-notes --notes=bar" will only show
notes from "refs/notes/bar".
--show-notes[=<treeish>], --[no-]standard-notes
These options are deprecated. Use the above --notes/--no-notes
options instead.
--show-signature
Check the validity of a signed commit object by passing the
signature to gpg --verify and show the output.
If the commit is a merge, and if the pretty-format is not oneline,
email or raw, an additional line is inserted before the Author: line.
This line begins with "Merge: " and the sha1s of ancestral commits
are printed, separated by spaces. Note that the listed commits may
not necessarily be the list of the direct parent commits if you have
limited your view of history: for example, if you are only interested
in changes related to a certain directory or file.
There are several built-in formats, and you can define additional
formats by setting a pretty.<name> config option to either another
format name, or a format: string, as described below (see
git-config(1)). Here are the details of the built-in formats:
· oneline
<sha1> <title line>
This is designed to be as compact as possible.
· short
commit <sha1>
Author: <author>
<title line>
· medium
commit <sha1>
Author: <author>
Date: <author date>
<title line>
<full commit message>
· full
commit <sha1>
Author: <author>
Commit: <committer>
<title line>
<full commit message>
· fuller
commit <sha1>
Author: <author>
AuthorDate: <author date>
Commit: <committer>
CommitDate: <committer date>
<title line>
<full commit message>
· email
From <sha1> <date>
From: <author>
Date: <author date>
Subject: [PATCH] <title line>
<full commit message>
· raw
The raw format shows the entire commit exactly as stored in the
commit object. Notably, the SHA-1s are displayed in full,
regardless of whether --abbrev or --no-abbrev are used, and
parents information show the true parent commits, without taking
grafts or history simplification into account. Note that this
format affects the way commits are displayed, but not the way the
diff is shown e.g. with git log --raw. To get full object names
in a raw diff format, use --no-abbrev.
· format:<string>
The format:<string> format allows you to specify which
information you want to show. It works a little bit like printf
format, with the notable exception that you get a newline with %n
instead of \n.
E.g, format:"The author of %h was %an, %ar%nThe title was
>>%s<<%n" would show something like this:
The author of fe6e0ee was Junio C Hamano, 23 hours ago
The title was >>t4119: test autocomputing -p<n> for traditional diff input.<<
The placeholders are:
· %H: commit hash
· %h: abbreviated commit hash
· %T: tree hash
· %t: abbreviated tree hash
· %P: parent hashes
· %p: abbreviated parent hashes
· %an: author name
· %aN: author name (respecting .mailmap, see git-shortlog(1) or
git-blame(1))
· %ae: author email
· %aE: author email (respecting .mailmap, see git-shortlog(1)
or git-blame(1))
· %ad: author date (format respects --date= option)
· %aD: author date, RFC2822 style
· %ar: author date, relative
· %at: author date, UNIX timestamp
· %ai: author date, ISO 8601-like format
· %aI: author date, strict ISO 8601 format
· %cn: committer name
· %cN: committer name (respecting .mailmap, see git-shortlog(1)
or git-blame(1))
· %ce: committer email
· %cE: committer email (respecting .mailmap, see
git-shortlog(1) or git-blame(1))
· %cd: committer date (format respects --date= option)
· %cD: committer date, RFC2822 style
· %cr: committer date, relative
· %ct: committer date, UNIX timestamp
· %ci: committer date, ISO 8601-like format
· %cI: committer date, strict ISO 8601 format
· %d: ref names, like the --decorate option of git-log(1)
· %D: ref names without the " (", ")" wrapping.
· %e: encoding
· %s: subject
· %f: sanitized subject line, suitable for a filename
· %b: body
· %B: raw body (unwrapped subject and body)
· %N: commit notes
· %GG: raw verification message from GPG for a signed commit
· %G?: show "G" for a good (valid) signature, "B" for a bad
signature, "U" for a good signature with unknown validity,
"X" for a good signature that has expired, "Y" for a good
signature made by an expired key, "R" for a good signature
made by a revoked key, "E" if the signature cannot be checked
(e.g. missing key) and "N" for no signature
· %GS: show the name of the signer for a signed commit
· %GK: show the key used to sign a signed commit
· %gD: reflog selector, e.g., refs/stash@{1} or refs/stash@{2
minutes ago}; the format follows the rules described for the
-g option. The portion before the @ is the refname as given
on the command line (so git log -g refs/heads/master would
yield refs/heads/master@{0}).
· %gd: shortened reflog selector; same as %gD, but the refname
portion is shortened for human readability (so
refs/heads/master becomes just master).
· %gn: reflog identity name
· %gN: reflog identity name (respecting .mailmap, see
git-shortlog(1) or git-blame(1))
· %ge: reflog identity email
· %gE: reflog identity email (respecting .mailmap, see
git-shortlog(1) or git-blame(1))
· %gs: reflog subject
· %Cred: switch color to red
· %Cgreen: switch color to green
· %Cblue: switch color to blue
· %Creset: reset color
· %C(...): color specification, as described under Values in
the "CONFIGURATION FILE" section of git-config(1); adding
auto, at the beginning (e.g. %C(auto,red)) will emit color
only when colors are enabled for log output (by color.diff,
color.ui, or --color, and respecting the auto settings of the
former if we are going to a terminal). auto alone (i.e.
%C(auto)) will turn on auto coloring on the next placeholders
until the color is switched again.
· %m: left (<), right (>) or boundary (-) mark
· %n: newline
· %%: a raw %
· %x00: print a byte from a hex code
· %w([<w>[,<i1>[,<i2>]]]): switch line wrapping, like the -w
option of git-shortlog(1).
· %<(<N>[,trunc|ltrunc|mtrunc]): make the next placeholder take
at least N columns, padding spaces on the right if necessary.
Optionally truncate at the beginning (ltrunc), the middle
(mtrunc) or the end (trunc) if the output is longer than N
columns. Note that truncating only works correctly with N >=
2.
· %<|(<N>): make the next placeholder take at least until Nth
columns, padding spaces on the right if necessary
· %>(<N>), %>|(<N>): similar to %<(<N>), %<|(<N>) respectively,
but padding spaces on the left
· %>>(<N>), %>>|(<N>): similar to %>(<N>), %>|(<N>)
respectively, except that if the next placeholder takes more
spaces than given and there are spaces on its left, use those
spaces
· %><(<N>), %><|(<N>): similar to % <(<N>), %<|(<N>)
respectively, but padding both sides (i.e. the text is
centered)
· %(trailers): display the trailers of the body as interpreted
by git-interpret-trailers(1)
Note
Some placeholders may depend on other options given to the
revision traversal engine. For example, the %g* reflog options
will insert an empty string unless we are traversing reflog
entries (e.g., by git log -g). The %d and %D placeholders will
use the "short" decoration format if --decorate was not already
provided on the command line.
If you add a + (plus sign) after % of a placeholder, a line-feed is
inserted immediately before the expansion if and only if the
placeholder expands to a non-empty string.
If you add a - (minus sign) after % of a placeholder, all consecutive
line-feeds immediately preceding the expansion are deleted if and
only if the placeholder expands to an empty string.
If you add a ` ` (space) after % of a placeholder, a space is
inserted immediately before the expansion if and only if the
placeholder expands to a non-empty string.
· tformat:
The tformat: format works exactly like format:, except that it
provides "terminator" semantics instead of "separator" semantics.
In other words, each commit has the message terminator character
(usually a newline) appended, rather than a separator placed
between entries. This means that the final entry of a single-line
format will be properly terminated with a new line, just as the
"oneline" format does. For example:
$ git log -2 --pretty=format:%h 4da45bef \
| perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
4da45be
7134973 -- NO NEWLINE
$ git log -2 --pretty=tformat:%h 4da45bef \
| perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
4da45be
7134973
In addition, any unrecognized string that has a % in it is
interpreted as if it has tformat: in front of it. For example,
these two are equivalent:
$ git log -2 --pretty=tformat:%h 4da45bef
$ git log -2 --pretty=%h 4da45bef
-p, -u, --patch
Generate patch (see section on generating patches).
-s, --no-patch
Suppress diff output. Useful for commands like git show that show
the patch by default, or to cancel the effect of --patch.
-U<n>, --unified=<n>
Generate diffs with <n> lines of context instead of the usual
three. Implies -p.
--raw
For each commit, show a summary of changes using the raw diff
format. See the "RAW OUTPUT FORMAT" section of git-diff(1). This
is different from showing the log itself in raw format, which you
can achieve with --format=raw.
--patch-with-raw
Synonym for -p --raw.
--indent-heuristic, --no-indent-heuristic
These are to help debugging and tuning experimental heuristics
(which are off by default) that shift diff hunk boundaries to
make patches easier to read.
--minimal
Spend extra time to make sure the smallest possible diff is
produced.
--patience
Generate a diff using the "patience diff" algorithm.
--histogram
Generate a diff using the "histogram diff" algorithm.
--diff-algorithm={patience|minimal|histogram|myers}
Choose a diff algorithm. The variants are as follows:
default, myers
The basic greedy diff algorithm. Currently, this is the
default.
minimal
Spend extra time to make sure the smallest possible diff is
produced.
patience
Use "patience diff" algorithm when generating patches.
histogram
This algorithm extends the patience algorithm to "support
low-occurrence common elements".
For instance, if you configured diff.algorithm variable to a
non-default value and want to use the default one, then you have
to use --diff-algorithm=default option.
--stat[=<width>[,<name-width>[,<count>]]]
Generate a diffstat. By default, as much space as necessary will
be used for the filename part, and the rest for the graph part.
Maximum width defaults to terminal width, or 80 columns if not
connected to a terminal, and can be overridden by <width>. The
width of the filename part can be limited by giving another width
<name-width> after a comma. The width of the graph part can be
limited by using --stat-graph-width=<width> (affects all commands
generating a stat graph) or by setting
diff.statGraphWidth=<width> (does not affect git format-patch).
By giving a third parameter <count>, you can limit the output to
the first <count> lines, followed by ... if there are more.
These parameters can also be set individually with
--stat-width=<width>, --stat-name-width=<name-width> and
--stat-count=<count>.
--numstat
Similar to --stat, but shows number of added and deleted lines in
decimal notation and pathname without abbreviation, to make it
more machine friendly. For binary files, outputs two - instead of
saying 0 0.
--shortstat
Output only the last line of the --stat format containing total
number of modified files, as well as number of added and deleted
lines.
--dirstat[=<param1,param2,...>]
Output the distribution of relative amount of changes for each
sub-directory. The behavior of --dirstat can be customized by
passing it a comma separated list of parameters. The defaults are
controlled by the diff.dirstat configuration variable (see
git-config(1)). The following parameters are available:
changes
Compute the dirstat numbers by counting the lines that have
been removed from the source, or added to the destination.
This ignores the amount of pure code movements within a file.
In other words, rearranging lines in a file is not counted as
much as other changes. This is the default behavior when no
parameter is given.
lines
Compute the dirstat numbers by doing the regular line-based
diff analysis, and summing the removed/added line counts.
(For binary files, count 64-byte chunks instead, since binary
files have no natural concept of lines). This is a more
expensive --dirstat behavior than the changes behavior, but
it does count rearranged lines within a file as much as other
changes. The resulting output is consistent with what you get
from the other --*stat options.
files
Compute the dirstat numbers by counting the number of files
changed. Each changed file counts equally in the dirstat
analysis. This is the computationally cheapest --dirstat
behavior, since it does not have to look at the file contents
at all.
cumulative
Count changes in a child directory for the parent directory
as well. Note that when using cumulative, the sum of the
percentages reported may exceed 100%. The default
(non-cumulative) behavior can be specified with the
noncumulative parameter.
<limit>
An integer parameter specifies a cut-off percent (3% by
default). Directories contributing less than this percentage
of the changes are not shown in the output.
Example: The following will count changed files, while ignoring
directories with less than 10% of the total amount of changed
files, and accumulating child directory counts in the parent
directories: --dirstat=files,10,cumulative.
--summary
Output a condensed summary of extended header information such as
creations, renames and mode changes.
--patch-with-stat
Synonym for -p --stat.
-z
Separate the commits with NULs instead of with new newlines.
Also, when --raw or --numstat has been given, do not munge
pathnames and use NULs as output field terminators.
Without this option, pathnames with "unusual" characters are
quoted as explained for the configuration variable core.quotePath
(see git-config(1)).
--name-only
Show only names of changed files.
--name-status
Show only names and status of changed files. See the description
of the --diff-filter option on what the status letters mean.
--submodule[=<format>]
Specify how differences in submodules are shown. When specifying
--submodule=short the short format is used. This format just
shows the names of the commits at the beginning and end of the
range. When --submodule or --submodule=log is specified, the log
format is used. This format lists the commits in the range like
git-submodule(1)summary does. When --submodule=diff is specified,
the diff format is used. This format shows an inline diff of the
changes in the submodule contents between the commit range.
Defaults to diff.submodule or the short format if the config
option is unset.
--color[=<when>]
Show colored diff. --color (i.e. without =<when>) is the same as
--color=always. <when> can be one of always, never, or auto.
--no-color
Turn off colored diff. It is the same as --color=never.
--word-diff[=<mode>]
Show a word diff, using the <mode> to delimit changed words. By
default, words are delimited by whitespace; see --word-diff-regex
below. The <mode> defaults to plain, and must be one of:
color
Highlight changed words using only colors. Implies --color.
plain
Show words as [-removed-] and {+added+}. Makes no attempts to
escape the delimiters if they appear in the input, so the
output may be ambiguous.
porcelain
Use a special line-based format intended for script
consumption. Added/removed/unchanged runs are printed in the
usual unified diff format, starting with a +/-/` ` character
at the beginning of the line and extending to the end of the
line. Newlines in the input are represented by a tilde ~ on a
line of its own.
none
Disable word diff again.
Note that despite the name of the first mode, color is used to
highlight the changed parts in all modes if enabled.
--word-diff-regex=<regex>
Use <regex> to decide what a word is, instead of considering runs
of non-whitespace to be a word. Also implies --word-diff unless
it was already enabled.
Every non-overlapping match of the <regex> is considered a word.
Anything between these matches is considered whitespace and
ignored(!) for the purposes of finding differences. You may want
to append |[^[:space:]] to your regular expression to make sure
that it matches all non-whitespace characters. A match that
contains a newline is silently truncated(!) at the newline.
For example, --word-diff-regex=. will treat each character as a
word and, correspondingly, show differences character by
character.
The regex can also be set via a diff driver or configuration
option, see gitattributes(5) or git-config(1). Giving it
explicitly overrides any diff driver or configuration setting.
Diff drivers override configuration settings.
--color-words[=<regex>]
Equivalent to --word-diff=color plus (if a regex was specified)
--word-diff-regex=<regex>.
--no-renames
Turn off rename detection, even when the configuration file gives
the default to do so.
--check
Warn if changes introduce conflict markers or whitespace errors.
What are considered whitespace errors is controlled by
core.whitespace configuration. By default, trailing whitespaces
(including lines that solely consist of whitespaces) and a space
character that is immediately followed by a tab character inside
the initial indent of the line are considered whitespace errors.
Exits with non-zero status if problems are found. Not compatible
with --exit-code.
--ws-error-highlight=<kind>
Highlight whitespace errors on lines specified by <kind> in the
color specified by color.diff.whitespace. <kind> is a comma
separated list of old, new, context. When this option is not
given, only whitespace errors in new lines are highlighted. E.g.
--ws-error-highlight=new,old highlights whitespace errors on both
deleted and added lines. all can be used as a short-hand for
old,new,context. The diff.wsErrorHighlight configuration variable
can be used to specify the default behaviour.
--full-index
Instead of the first handful of characters, show the full pre-
and post-image blob object names on the "index" line when
generating patch format output.
--binary
In addition to --full-index, output a binary diff that can be
applied with git-apply.
--abbrev[=<n>]
Instead of showing the full 40-byte hexadecimal object name in
diff-raw format output and diff-tree header lines, show only a
partial prefix. This is independent of the --full-index option
above, which controls the diff-patch output format. Non default
number of digits can be specified with --abbrev=<n>.
-B[<n>][/<m>], --break-rewrites[=[<n>][/<m>]]
Break complete rewrite changes into pairs of delete and create.
This serves two purposes:
It affects the way a change that amounts to a total rewrite of a
file not as a series of deletion and insertion mixed together
with a very few lines that happen to match textually as the
context, but as a single deletion of everything old followed by a
single insertion of everything new, and the number m controls
this aspect of the -B option (defaults to 60%). -B/70% specifies
that less than 30% of the original should remain in the result
for Git to consider it a total rewrite (i.e. otherwise the
resulting patch will be a series of deletion and insertion mixed
together with context lines).
When used with -M, a totally-rewritten file is also considered as
the source of a rename (usually -M only considers a file that
disappeared as the source of a rename), and the number n controls
this aspect of the -B option (defaults to 50%). -B20% specifies
that a change with addition and deletion compared to 20% or more
of the file’s size are eligible for being picked up as a possible
source of a rename to another file.
-M[<n>], --find-renames[=<n>]
If generating diffs, detect and report renames for each commit.
For following files across renames while traversing history, see
--follow. If n is specified, it is a threshold on the similarity
index (i.e. amount of addition/deletions compared to the file’s
size). For example, -M90% means Git should consider a delete/add
pair to be a rename if more than 90% of the file hasn’t changed.
Without a % sign, the number is to be read as a fraction, with a
decimal point before it. I.e., -M5 becomes 0.5, and is thus the
same as -M50%. Similarly, -M05 is the same as -M5%. To limit
detection to exact renames, use -M100%. The default similarity
index is 50%.
-C[<n>], --find-copies[=<n>]
Detect copies as well as renames. See also --find-copies-harder.
If n is specified, it has the same meaning as for -M<n>.
--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. Giving more
than one -C option has the same effect.
-D, --irreversible-delete
Omit the preimage for deletes, i.e. print only the header but not
the diff between the preimage and /dev/null. The resulting patch
is not meant to be applied with patch or git apply; this is
solely for people who want to just concentrate on reviewing the
text after the change. In addition, the output obviously lack
enough information to apply such a patch in reverse, even
manually, hence the name of the option.
When used together with -B, omit also the preimage in the
deletion part of a delete/create pair.
-l<num>
The -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.
--diff-filter=[(A|C|D|M|R|T|U|X|B)...[*]]
Select only files that are Added (A), Copied (C), Deleted (D),
Modified (M), Renamed (R), have their type (i.e. regular file,
symlink, submodule, ...) changed (T), are Unmerged (U), are
Unknown (X), or have had their pairing Broken (B). Any
combination of the filter characters (including none) can 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.
Also, these upper-case letters can be downcased to exclude. E.g.
--diff-filter=ad excludes added and deleted paths.
-S<string>
Look for differences that change the number of occurrences of the
specified string (i.e. addition/deletion) in a file. Intended for
the scripter’s use.
It is useful when you’re looking for an exact block of code (like
a struct), and want to know the history of that block since it
first came into being: use the feature iteratively to feed the
interesting block in the preimage back into -S, and keep going
until you get the very first version of the block.
-G<regex>
Look for differences whose patch text contains added/removed
lines that match <regex>.
To illustrate the difference between -S<regex> --pickaxe-regex
and -G<regex>, consider a commit with the following diff in the
same file:
+ return !regexec(regexp, two->ptr, 1, ®match, 0);
...
- hit = !regexec(regexp, mf2.ptr, 1, ®match, 0);
While git log -G"regexec\(regexp" will show this commit, git log
-S"regexec\(regexp" --pickaxe-regex will not (because the number
of occurrences of that string did not change).
See the pickaxe entry in gitdiffcore(7) for more information.
--pickaxe-all
When -S or -G finds a change, show all the changes in that
changeset, not just the files that contain the change in
<string>.
--pickaxe-regex
Treat the <string> given to -S as an extended POSIX regular
expression to match.
-O<orderfile>
Control the order in which files appear in the output. This
overrides the diff.orderFile configuration variable (see
git-config(1)). To cancel diff.orderFile, use -O/dev/null.
The output order is determined by the order of glob patterns in
<orderfile>. All files with pathnames that match the first
pattern are output first, all files with pathnames that match the
second pattern (but not the first) are output next, and so on.
All files with pathnames that do not match any pattern are output
last, as if there was an implicit match-all pattern at the end of
the file. If multiple pathnames have the same rank (they match
the same pattern but no earlier patterns), their output order
relative to each other is the normal order.
<orderfile> is parsed as follows:
· Blank lines are ignored, so they can be used as separators
for readability.
· Lines starting with a hash ("#") are ignored, so they can be
used for comments. Add a backslash ("\") to the beginning of
the pattern if it starts with a hash.
· Each other line contains a single pattern.
Patterns have the same syntax and semantics as patterns used for
fnmantch(3) without the FNM_PATHNAME flag, except a pathname also
matches a pattern if removing any number of the final pathname
components matches the pattern. For example, the pattern
"foo*bar" matches "fooasdfbar" and "foo/bar/baz/asdf" but not
"foobarx".
-R
Swap two inputs; that is, show differences from index or on-disk
file to tree contents.
--relative[=<path>]
When run from a subdirectory of the project, it can be told to
exclude changes outside the directory and show pathnames relative
to it with this option. When you are not in a subdirectory (e.g.
in a bare repository), you can name which subdirectory to make
the output relative to by giving a <path> as an argument.
-a, --text
Treat all files as text.
--ignore-space-at-eol
Ignore changes in whitespace at EOL.
-b, --ignore-space-change
Ignore changes in amount of whitespace. This ignores whitespace
at line end, and considers all other sequences of one or more
whitespace characters to be equivalent.
-w, --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.
--inter-hunk-context=<lines>
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 surrounding functions of changes.
--ext-diff
Allow an external diff helper to be executed. If you set an
external diff driver with gitattributes(5), you need to use this
option with 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 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 git-diff(1) and git-log(1), but not for
git-format-patch(1) or diff plumbing commands.
--ignore-submodules[=<when>]
Ignore changes to submodules in the diff generation. <when> can
be either "none", "untracked", "dirty" or "all", which 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
git-config(1) or 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.
--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
gitdiffcore(7).
When "git-diff-index", "git-diff-tree", or "git-diff-files" are run
with a -p option, "git diff" without the --raw option, or "git log"
with the "-p" option, they do not produce the output described above;
instead they produce a patch file. You can customize the creation of
such patches via the GIT_EXTERNAL_DIFF and the GIT_DIFF_OPTS
environment variables.
What the -p option produces is slightly different from the
traditional diff format:
1. It is preceded with a "git diff" header that looks like this:
diff --git a/file1 b/file2
The a/ and b/ filenames are the same unless rename/copy is
involved. Especially, even for a creation or a deletion,
/dev/null is not used in place of the a/ or b/ filenames.
When rename/copy is involved, file1 and file2 show the name of
the source file of the rename/copy and the name of the file that
rename/copy produces, respectively.
2. It is followed by one or more extended header lines:
old mode <mode>
new mode <mode>
deleted file mode <mode>
new file mode <mode>
copy from <path>
copy to <path>
rename from <path>
rename to <path>
similarity index <number>
dissimilarity index <number>
index <hash>..<hash> <mode>
File modes are printed as 6-digit octal numbers including the
file type and file permission bits.
Path names in extended headers do not include the a/ and b/
prefixes.
The similarity index is the percentage of unchanged lines, and
the dissimilarity index is the percentage of changed lines. It is
a rounded down integer, followed by a percent sign. The
similarity index value of 100% is thus reserved for two equal
files, while 100% dissimilarity means that no line from the old
file made it into the new one.
The index line includes the SHA-1 checksum before and after the
change. The <mode> is included if the file mode does not change;
otherwise, separate lines indicate the old and the new mode.
3. Pathnames with "unusual" characters are quoted as explained for
the configuration variable core.quotePath (see git-config(1)).
4. All the file1 files in the output refer to files before the
commit, and all the file2 files refer to files after the commit.
It is incorrect to apply each change to each file sequentially.
For example, this patch will swap a and b:
diff --git a/a b/b
rename from a
rename to b
diff --git a/b b/a
rename from b
rename to a
Any diff-generating command can take the -c or --cc option to produce
a combined diff when showing a merge. This is the default format when
showing merges with git-diff(1) or git-show(1). Note also that you
can give the -m option to any of these commands to force generation
of diffs with individual parents of a merge.
A combined diff format looks like this:
diff --combined describe.c
index fabadb8,cc95eb0..4866510
--- a/describe.c
+++ b/describe.c
@@@ -98,20 -98,12 +98,20 @@@
return (a_date > b_date) ? -1 : (a_date == b_date) ? 0 : 1;
}
- static void describe(char *arg)
-static void describe(struct commit *cmit, int last_one)
++static void describe(char *arg, int last_one)
{
+ unsigned char sha1[20];
+ struct commit *cmit;
struct commit_list *list;
static int initialized = 0;
struct commit_name *n;
+ if (get_sha1(arg, sha1) < 0)
+ usage(describe_usage);
+ cmit = lookup_commit_reference(sha1);
+ if (!cmit)
+ usage(describe_usage);
+
if (!initialized) {
initialized = 1;
for_each_ref(get_name);
1. It is preceded with a "git diff" header, that looks like this
(when -c option is used):
diff --combined file
or like this (when --cc option is used):
diff --cc file
2. It is followed by one or more extended header lines (this example
shows a merge with two parents):
index <hash>,<hash>..<hash>
mode <mode>,<mode>..<mode>
new file mode <mode>
deleted file mode <mode>,<mode>
The mode <mode>,<mode>..<mode> line appears only if at least one
of the <mode> is different from the rest. Extended headers with
information about detected contents movement (renames and copying
detection) are designed to work with diff of two <tree-ish> and
are not used by combined diff format.
3. It is followed by two-line from-file/to-file header
--- a/file
+++ b/file
Similar to two-line header for traditional unified diff format,
/dev/null is used to signal created or deleted files.
4. Chunk header format is modified to prevent people from
accidentally feeding it to patch -p1. Combined diff format was
created for review of merge commit changes, and was not meant for
apply. The change is similar to the change in the extended index
header:
@@@ <from-file-range> <from-file-range> <to-file-range> @@@
There are (number of parents + 1) @ characters in the chunk
header for combined diff format.
Unlike the traditional unified diff format, which shows two files A
and B with a single column that has - (minus — appears in A but
removed in B), + (plus — missing in A but added to B), or " " (space
— unchanged) prefix, this format compares two or more files file1,
file2,... with one file X, and shows how X differs from each of
fileN. One column for each of fileN is prepended to the output line
to note how X’s line is different from it.
A - character in the column N means that the line appears in fileN
but it does not appear in the result. A + character in the column N
means that the line appears in the result, and fileN does not have
that line (in other words, the line was added, from the point of view
of that parent).
In the above example output, the function signature was changed from
both files (hence two - removals from both file1 and file2, plus ++
to mean one line that was added does not appear in either file1 or
file2). Also eight other lines are the same from file1 but do not
appear in file2 (hence prefixed with +).
When shown by git diff-tree -c, it compares the parents of a merge
commit with the merge result (i.e. file1..fileN are the parents).
When shown by git diff-files -c, it compares the two unresolved merge
parents with the working tree file (i.e. file1 is stage 2 aka "our
version", file2 is stage 3 aka "their version").
git show v1.0.0
Shows the tag v1.0.0, along with the object the tags points at.
git show v1.0.0^{tree}
Shows the tree pointed to by the tag v1.0.0.
git show -s --format=%s v1.0.0^{commit}
Shows the subject of the commit pointed to by the tag v1.0.0.
git show next~10:Documentation/README
Shows the contents of the file Documentation/README as they were
current in the 10th last commit of the branch next.
git show master:Makefile master:t/Makefile
Concatenates the contents of said Makefiles in the head of the
branch master.
Git is to some extent character encoding agnostic.
· The contents of the blob objects are uninterpreted sequences of
bytes. There is no encoding translation at the core level.
· Path names are encoded in UTF-8 normalization form C. This
applies to tree objects, the index file, ref names, as well as
path names in command line arguments, environment variables and
config files (.git/config (see git-config(1)), gitignore(5),
gitattributes(5) and gitmodules(5)).
Note that Git at the core level treats path names simply as
sequences of non-NUL bytes, there are no path name encoding
conversions (except on Mac and Windows). Therefore, using
non-ASCII path names will mostly work even on platforms and file
systems that use legacy extended ASCII encodings. However,
repositories created on such systems will not work properly on
UTF-8-based systems (e.g. Linux, Mac, Windows) and vice versa.
Additionally, many Git-based tools simply assume path names to be
UTF-8 and will fail to display other encodings correctly.
· Commit log messages are typically encoded in UTF-8, but other
extended ASCII encodings are also supported. This includes
ISO-8859-x, CP125x and many others, but not UTF-16/32, EBCDIC and
CJK multi-byte encodings (GBK, Shift-JIS, Big5, EUC-x, CP9xx
etc.).
Although we encourage that the commit log messages are encoded in
UTF-8, both the core and Git Porcelain are designed not to force
UTF-8 on projects. If all participants of a particular project find
it more convenient to use legacy encodings, Git does not forbid it.
However, there are a few things to keep in mind.
1. git commit and git commit-tree issues a warning if the commit log
message given to it does not look like a valid UTF-8 string,
unless you explicitly say your project uses a legacy encoding.
The way to say this is to have i18n.commitencoding in .git/config
file, like this:
[i18n]
commitencoding = ISO-8859-1
Commit objects created with the above setting record the value of
i18n.commitencoding in its encoding header. This is to help other
people who look at them later. Lack of this header implies that
the commit log message is encoded in UTF-8.
2. git log, git show, git blame and friends look at the encoding
header of a commit object, and try to re-code the log message
into UTF-8 unless otherwise specified. You can specify the
desired output encoding with i18n.logoutputencoding in
.git/config file, like this:
[i18n]
logoutputencoding = ISO-8859-1
If you do not have this configuration variable, the value of
i18n.commitencoding is used instead.
Note that we deliberately chose not to re-code the commit log message
when a commit is made to force UTF-8 at the commit object level,
because re-coding to UTF-8 is not necessarily a reversible operation.
Part of the git(1) suite
This page is part of the git (Git distributed version control system)
project. Information about the project can be found at
⟨http://git-scm.com/⟩. If you have a bug report for this manual page,
see ⟨http://git-scm.com/community⟩. This page was obtained from the
project's upstream Git repository ⟨https://github.com/git/git.git⟩ on
2017-07-05. If you discover any rendering problems in this HTML ver‐
sion of the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original man‐
ual page), send a mail to man-pages@man7.org
Git 2.13.2.556.g5116f7 07/05/2017 GIT-SHOW(1)
Pages that refer to this page: git(1), git-config(1), git-diff(1), git-diff-files(1), git-diff-index(1), git-diff-tree(1), git-log(1), git-rev-list(1), git-show(1), gitrevisions(7)