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index 5981c79f6a2568c33b455c649946d6af2d9baeb3..5ed2bc840f962cfe3af6bf4540edf46f47b9e148 100644 (file)
SYNOPSIS
--------
SYNOPSIS
--------
-'git-rev-parse' [ --option ] <args>...
+'git rev-parse' [ --option ] <args>...
DESCRIPTION
-----------
Many git porcelainish commands take mixture of flags
(i.e. parameters that begin with a dash '-') and parameters
DESCRIPTION
-----------
Many git porcelainish commands take mixture of flags
(i.e. parameters that begin with a dash '-') and parameters
-meant for underlying `git-rev-list` command they use internally
-and flags and parameters for other commands they use as the
-downstream of `git-rev-list`. This command is used to
+meant for the underlying 'git-rev-list' command they use internally
+and flags and parameters for the other commands they use
+downstream of 'git-rev-list'. This command is used to
distinguish between them.
OPTIONS
-------
--parseopt::
distinguish between them.
OPTIONS
-------
--parseopt::
- Use `git-rev-parse` in option parsing mode (see PARSEOPT section below).
+ Use 'git-rev-parse' in option parsing mode (see PARSEOPT section below).
--keep-dash-dash::
Only meaningful in `--parseopt` mode. Tells the option parser to echo
--keep-dash-dash::
Only meaningful in `--parseopt` mode. Tells the option parser to echo
--revs-only::
Do not output flags and parameters not meant for
--revs-only::
Do not output flags and parameters not meant for
- `git-rev-list` command.
+ 'git-rev-list' command.
--no-revs::
Do not output flags and parameters meant for
--no-revs::
Do not output flags and parameters meant for
- `git-rev-list` command.
+ 'git-rev-list' command.
--flags::
Do not output non-flag parameters.
--flags::
Do not output non-flag parameters.
The parameter given must be usable as a single, valid
object name. Otherwise barf and abort.
The parameter given must be usable as a single, valid
object name. Otherwise barf and abort.
+-q::
+--quiet::
+ Only meaningful in `--verify` mode. Do not output an error
+ message if the first argument is not a valid object name;
+ instead exit with non-zero status silently.
+
--sq::
Usually the output is made one line per flag and
parameter. This option makes output a single line,
properly quoted for consumption by shell. Useful when
you expect your parameter to contain whitespaces and
newlines (e.g. when using pickaxe `-S` with
--sq::
Usually the output is made one line per flag and
parameter. This option makes output a single line,
properly quoted for consumption by shell. Useful when
you expect your parameter to contain whitespaces and
newlines (e.g. when using pickaxe `-S` with
- `git-diff-\*`).
+ 'git-diff-\*').
--not::
When showing object names, prefix them with '{caret}' and
--not::
When showing object names, prefix them with '{caret}' and
--is-bare-repository::
When the repository is bare print "true", otherwise "false".
--is-bare-repository::
When the repository is bare print "true", otherwise "false".
---short, --short=number::
+--short::
+--short=number::
Instead of outputting the full SHA1 values of object names try to
abbreviate them to a shorter unique name. When no length is specified
7 is used. The minimum length is 4.
Instead of outputting the full SHA1 values of object names try to
abbreviate them to a shorter unique name. When no length is specified
7 is used. The minimum length is 4.
---since=datestring, --after=datestring::
- Parses the date string, and outputs corresponding
- --max-age= parameter for git-rev-list command.
+--since=datestring::
+--after=datestring::
+ Parse the date string, and output the corresponding
+ --max-age= parameter for 'git-rev-list'.
---until=datestring, --before=datestring::
- Parses the date string, and outputs corresponding
- --min-age= parameter for git-rev-list command.
+--until=datestring::
+--before=datestring::
+ Parse the date string, and output the corresponding
+ --min-age= parameter for 'git-rev-list'.
<args>...::
Flags and parameters to be parsed.
<args>...::
Flags and parameters to be parsed.
name the same commit object if there are no other object in
your repository whose object name starts with dae86e.
name the same commit object if there are no other object in
your repository whose object name starts with dae86e.
-* An output from `git-describe`; i.e. a closest tag, followed by a
- dash, a `g`, and an abbreviated object name.
+* An output from 'git-describe'; i.e. a closest tag, optionally
+ followed by a dash and a number of commits, followed by a dash, a
+ `g`, and an abbreviated object name.
* A symbolic ref name. E.g. 'master' typically means the commit
object referenced by $GIT_DIR/refs/heads/master. If you
* A symbolic ref name. E.g. 'master' typically means the commit
object referenced by $GIT_DIR/refs/heads/master. If you
first match in the following rules:
. if `$GIT_DIR/<name>` exists, that is what you mean (this is usually
first match in the following rules:
. if `$GIT_DIR/<name>` exists, that is what you mean (this is usually
- useful only for `HEAD`, `FETCH_HEAD` and `MERGE_HEAD`);
+ useful only for `HEAD`, `FETCH_HEAD`, `ORIG_HEAD` and `MERGE_HEAD`);
. otherwise, `$GIT_DIR/refs/<name>` if exists;
. otherwise, `$GIT_DIR/refs/<name>` if exists;
. otherwise, `$GIT_DIR/refs/remotes/<name>` if exists;
. otherwise, `$GIT_DIR/refs/remotes/<name>/HEAD` if exists.
. otherwise, `$GIT_DIR/refs/remotes/<name>` if exists;
. otherwise, `$GIT_DIR/refs/remotes/<name>/HEAD` if exists.
++
+HEAD names the commit your changes in the working tree is based on.
+FETCH_HEAD records the branch you fetched from a remote repository
+with your last 'git-fetch' invocation.
+ORIG_HEAD is created by commands that moves your HEAD in a drastic
+way, to record the position of the HEAD before their operation, so that
+you can change the tip of the branch back to the state before you ran
+them easily.
+MERGE_HEAD records the commit(s) you are merging into your branch
+when you run 'git-merge'.
* A ref followed by the suffix '@' with a date specification
enclosed in a brace
* A ref followed by the suffix '@' with a date specification
enclosed in a brace
second ago\}' or '\{1979-02-26 18:30:00\}') to specify the value
of the ref at a prior point in time. This suffix may only be
used immediately following a ref name and the ref must have an
second ago\}' or '\{1979-02-26 18:30:00\}') to specify the value
of the ref at a prior point in time. This suffix may only be
used immediately following a ref name and the ref must have an
- existing log ($GIT_DIR/logs/<ref>).
+ existing log ($GIT_DIR/logs/<ref>). Note that this looks up the state
+ of your *local* ref at a given time; e.g., what was in your local
+ `master` branch last week. If you want to look at commits made during
+ certain times, see `--since` and `--until`.
* A ref followed by the suffix '@' with an ordinal specification
enclosed in a brace pair (e.g. '\{1\}', '\{15\}') to specify
* A ref followed by the suffix '@' with an ordinal specification
enclosed in a brace pair (e.g. '\{1\}', '\{15\}') to specify
reflog of the current branch. For example, if you are on the
branch 'blabla', then '@\{1\}' means the same as 'blabla@\{1\}'.
reflog of the current branch. For example, if you are on the
branch 'blabla', then '@\{1\}' means the same as 'blabla@\{1\}'.
+* The special construct '@\{-<n>\}' means the <n>th branch checked out
+ before the current one.
+
* A suffix '{caret}' to a revision parameter means the first parent of
that commit object. '{caret}<n>' means the <n>th parent (i.e.
'rev{caret}'
* A suffix '{caret}' to a revision parameter means the first parent of
that commit object. '{caret}<n>' means the <n>th parent (i.e.
'rev{caret}'
SPECIFYING RANGES
-----------------
SPECIFYING RANGES
-----------------
-History traversing commands such as `git-log` operate on a set
+History traversing commands such as 'git-log' operate on a set
of commits, not just a single commit. To these commands,
specifying a single revision with the notation described in the
previous section means the set of commits reachable from that
commit, following the commit ancestry chain.
To exclude commits reachable from a commit, a prefix `{caret}`
of commits, not just a single commit. To these commands,
specifying a single revision with the notation described in the
previous section means the set of commits reachable from that
commit, following the commit ancestry chain.
To exclude commits reachable from a commit, a prefix `{caret}`
-notation is used. E.g. "`{caret}r1 r2`" means commits reachable
+notation is used. E.g. `{caret}r1 r2` means commits reachable
from `r2` but exclude the ones reachable from `r1`.
This set operation appears so often that there is a shorthand
from `r2` but exclude the ones reachable from `r1`.
This set operation appears so often that there is a shorthand
-for it. "`r1..r2`" is equivalent to "`{caret}r1 r2`". It is
-the difference of two sets (subtract the set of commits
-reachable from `r1` from the set of commits reachable from
-`r2`).
+for it. When you have two commits `r1` and `r2` (named according
+to the syntax explained in SPECIFYING REVISIONS above), you can ask
+for commits that are reachable from r2 excluding those that are reachable
+from r1 by `{caret}r1 r2` and it can be written as `r1..r2`.
-A similar notation "`r1\...r2`" is called symmetric difference
+A similar notation `r1\...r2` is called symmetric difference
of `r1` and `r2` and is defined as
of `r1` and `r2` and is defined as
-"`r1 r2 --not $(git-merge-base --all r1 r2)`".
+`r1 r2 --not $(git merge-base --all r1 r2)`.
It is the set of commits that are reachable from either one of
`r1` or `r2` but not from both.
Two other shorthands for naming a set that is formed by a commit
It is the set of commits that are reachable from either one of
`r1` or `r2` but not from both.
Two other shorthands for naming a set that is formed by a commit
-and its parent commits exists. `r1{caret}@` notation means all
+and its parent commits exist. The `r1{caret}@` notation means all
parents of `r1`. `r1{caret}!` includes commit `r1` but excludes
parents of `r1`. `r1{caret}!` includes commit `r1` but excludes
-its all parents.
+all of its parents.
Here are a handful of examples:
Here are a handful of examples:
PARSEOPT
--------
PARSEOPT
--------
-In `--parseopt` mode, `git-rev-parse` helps massaging options to bring to shell
+In `--parseopt` mode, 'git-rev-parse' helps massaging options to bring to shell
scripts the same facilities C builtins have. It works as an option normalizer
(e.g. splits single switches aggregate values), a bit like `getopt(1)` does.
scripts the same facilities C builtins have. It works as an option normalizer
(e.g. splits single switches aggregate values), a bit like `getopt(1)` does.
Input Format
~~~~~~~~~~~~
Input Format
~~~~~~~~~~~~
-`git-rev-parse --parseopt` input format is fully text based. It has two parts,
+'git-rev-parse --parseopt' input format is fully text based. It has two parts,
separated by a line that contains only `--`. The lines before the separator
(should be more than one) are used for the usage.
The lines after the separator describe the options.
separated by a line that contains only `--`. The lines before the separator
(should be more than one) are used for the usage.
The lines after the separator describe the options.
* Use `*` to mean that this option should not be listed in the usage
generated for the `-h` argument. It's shown for `--help-all` as
* Use `*` to mean that this option should not be listed in the usage
generated for the `-h` argument. It's shown for `--help-all` as
- documented in linkgit:gitcli[5].
+ documented in linkgit:gitcli[7].
* Use `!` to not make the corresponding negated long option available.
* Use `!` to not make the corresponding negated long option available.
An option group Header
C? option C with an optional argument"
An option group Header
C? option C with an optional argument"
-eval `echo "$OPTS_SPEC" | git-rev-parse --parseopt -- "$@" || echo exit $?`
+eval `echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?`
+------------
+
+EXAMPLES
+--------
+
+* Print the object name of the current commit:
++
+------------
+$ git rev-parse --verify HEAD
+------------
+
+* Print the commit object name from the revision in the $REV shell variable:
++
+------------
+$ git rev-parse --verify $REV
+------------
++
+This will error out if $REV is empty or not a valid revision.
+
+* Same as above:
++
+------------
+$ git rev-parse --default master --verify $REV
------------
------------
++
+but if $REV is empty, the commit object name from master will be printed.
Author
------
Written by Linus Torvalds <torvalds@osdl.org> .
Author
------
Written by Linus Torvalds <torvalds@osdl.org> .
-Junio C Hamano <junkio@cox.net> and Pierre Habouzit <madcoder@debian.org>
+Junio C Hamano <gitster@pobox.com> and Pierre Habouzit <madcoder@debian.org>
Documentation
--------------
Documentation
--------------
GIT
---
GIT
---
-Part of the linkgit:git[7] suite
+Part of the linkgit:git[1] suite