diff options
Diffstat (limited to 'Documentation/revisions.txt')
| -rw-r--r-- | Documentation/revisions.txt | 80 |
1 files changed, 53 insertions, 27 deletions
diff --git a/Documentation/revisions.txt b/Documentation/revisions.txt index 07961185fe..abae363983 100644 --- a/Documentation/revisions.txt +++ b/Documentation/revisions.txt @@ -28,8 +28,8 @@ blobs contained in a commit. first match in the following rules: . If '$GIT_DIR/<refname>' exists, that is what you mean (this is usually - useful only for 'HEAD', 'FETCH_HEAD', 'ORIG_HEAD', 'MERGE_HEAD' - and 'CHERRY_PICK_HEAD'); + useful only for `HEAD`, `FETCH_HEAD`, `ORIG_HEAD`, `MERGE_HEAD` + and `CHERRY_PICK_HEAD`); . otherwise, 'refs/<refname>' if it exists; @@ -41,16 +41,16 @@ blobs contained in a commit. . otherwise, 'refs/remotes/<refname>/HEAD' if it exists. + -'HEAD' names the commit on which you based the changes in the working tree. -'FETCH_HEAD' records the branch which you fetched from a remote repository +`HEAD` names the commit on which you based the changes in the working tree. +`FETCH_HEAD` records the branch which you fetched from a remote repository with your last `git fetch` invocation. -'ORIG_HEAD' is created by commands that move your 'HEAD' in a drastic -way, to record the position of the 'HEAD' before their operation, so that +`ORIG_HEAD` is created by commands that move your `HEAD` in a drastic +way, to record the position of the `HEAD` before their operation, so that you can easily change the tip of the branch back to the state before you ran them. -'MERGE_HEAD' records the commit(s) which you are merging into your branch +`MERGE_HEAD` records the commit(s) which you are merging into your branch when you run `git merge`. -'CHERRY_PICK_HEAD' records the commit which you are cherry-picking +`CHERRY_PICK_HEAD` records the commit which you are cherry-picking when you run `git cherry-pick`. + Note that any of the 'refs/*' cases above may come either from @@ -59,21 +59,21 @@ While the ref name encoding is unspecified, UTF-8 is preferred as some output processing may assume ref names in UTF-8. '@':: - '@' alone is a shortcut for 'HEAD'. + '@' alone is a shortcut for `HEAD`. -'<refname>@\{<date>\}', e.g. 'master@\{yesterday\}', 'HEAD@\{5 minutes ago\}':: +'<refname>@{<date>}', e.g. 'master@\{yesterday\}', 'HEAD@{5 minutes ago}':: A ref followed by the suffix '@' with a date specification enclosed in a brace - pair (e.g. '\{yesterday\}', '\{1 month 2 weeks 3 days 1 hour 1 - second ago\}' or '\{1979-02-26 18:30:00\}') specifies the value + pair (e.g. '\{yesterday\}', '{1 month 2 weeks 3 days 1 hour 1 + second ago}' or '{1979-02-26 18:30:00}') specifies 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>'). 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'. + certain times, see `--since` and `--until`. -'<refname>@\{<n>\}', e.g. 'master@\{1\}':: +'<refname>@{<n>}', e.g. 'master@\{1\}':: A ref followed by the suffix '@' with an ordinal specification enclosed in a brace pair (e.g. '\{1\}', '\{15\}') specifies the n-th prior value of that ref. For example 'master@\{1\}' @@ -82,13 +82,13 @@ some output processing may assume ref names in UTF-8. immediately following a ref name and the ref must have an existing log ('$GIT_DIR/logs/<refname>'). -'@\{<n>\}', e.g. '@\{1\}':: +'@{<n>}', e.g. '@\{1\}':: You can use the '@' construct with an empty ref part to get at a reflog entry of the current branch. For example, if you are on branch 'blabla' then '@\{1\}' means the same as 'blabla@\{1\}'. -'@\{-<n>\}', e.g. '@\{-1\}':: - The construct '@\{-<n>\}' means the <n>th branch/commit checked out +'@{-<n>}', e.g. '@{-1}':: + The construct '@{-<n>}' means the <n>th branch/commit checked out before the current one. '<branchname>@\{upstream\}', e.g. 'master@\{upstream\}', '@\{u\}':: @@ -98,6 +98,31 @@ some output processing may assume ref names in UTF-8. `branch.<name>.merge`). A missing branchname defaults to the current one. +'<branchname>@\{push\}', e.g. 'master@\{push\}', '@\{push\}':: + The suffix '@\{push}' reports the branch "where we would push to" if + `git push` were run while `branchname` was checked out (or the current + `HEAD` if no branchname is specified). Since our push destination is + in a remote repository, of course, we report the local tracking branch + that corresponds to that branch (i.e., something in 'refs/remotes/'). ++ +Here's an example to make it more clear: ++ +------------------------------ +$ git config push.default current +$ git config remote.pushdefault myfork +$ git checkout -b mybranch origin/master + +$ git rev-parse --symbolic-full-name @{upstream} +refs/remotes/origin/master + +$ git rev-parse --symbolic-full-name @{push} +refs/remotes/myfork/mybranch +------------------------------ ++ +Note in the example that we set up a triangular workflow, where we pull +from one location and push to another. In a non-triangular workflow, +'@\{push}' is the same as '@\{upstream}', and there is no need for it. + '<rev>{caret}', e.g. 'HEAD{caret}, v1.5.1{caret}0':: A suffix '{caret}' to a revision parameter means the first parent of that commit object. '{caret}<n>' means the <n>th parent (i.e. @@ -114,7 +139,7 @@ some output processing may assume ref names in UTF-8. '<rev>{caret}1{caret}1{caret}1'. See below for an illustration of the usage of this form. -'<rev>{caret}\{<type>\}', e.g. 'v0.99.8{caret}\{commit\}':: +'<rev>{caret}{<type>}', e.g. 'v0.99.8{caret}\{commit\}':: A suffix '{caret}' followed by an object type name enclosed in brace pair means dereference the object at '<rev>' recursively until an object of type '<type>' is found or the object cannot be @@ -134,13 +159,13 @@ it does not have to be dereferenced even once to get to an object. 'rev{caret}\{tag\}' can be used to ensure that 'rev' identifies an existing tag object. -'<rev>{caret}\{\}', e.g. 'v0.99.8{caret}\{\}':: +'<rev>{caret}{}', e.g. 'v0.99.8{caret}{}':: A suffix '{caret}' followed by an empty brace pair means the object could be a tag, and dereference the tag recursively until a non-tag object is found. -'<rev>{caret}\{/<text>\}', e.g. 'HEAD^{/fix nasty bug}':: +'<rev>{caret}{/<text>}', e.g. 'HEAD^{/fix nasty bug}':: A suffix '{caret}' to a revision parameter, followed by a brace pair that contains a text led by a slash, is the same as the ':/fix nasty bug' syntax below except that @@ -151,11 +176,12 @@ existing tag object. A colon, followed by a slash, followed by a text, names a commit whose commit message matches the specified regular expression. This name returns the youngest matching commit which is - reachable from any ref. If the commit message starts with a - '!' you have to repeat that; the special sequence ':/!', - followed by something else than '!', is reserved for now. - The regular expression can match any part of the commit message. To - match messages starting with a string, one can use e.g. ':/^foo'. + reachable from any ref. The regular expression can match any part of the + commit message. To match messages starting with a string, one can use + e.g. ':/^foo'. The special sequence ':/!' is reserved for modifiers to what + is matched. ':/!-foo' performs a negative match, while ':/!!foo' matches a + literal '!' character, followed by 'foo'. Any other sequence beginning with + ':/!' is reserved for now. '<rev>:<path>', e.g. 'HEAD:README', ':README', 'master:./README':: A suffix ':' followed by a path names the blob or tree @@ -257,12 +283,12 @@ To summarize: '<rev1>..<rev2>':: Include commits that are reachable from <rev2> but exclude those that are reachable from <rev1>. When either <rev1> or - <rev2> is omitted, it defaults to 'HEAD'. + <rev2> is omitted, it defaults to `HEAD`. '<rev1>\...<rev2>':: Include commits that are reachable from either <rev1> or <rev2> but exclude those that are reachable from both. When - either <rev1> or <rev2> is omitted, it defaults to 'HEAD'. + either <rev1> or <rev2> is omitted, it defaults to `HEAD`. '<rev>{caret}@', e.g. 'HEAD{caret}@':: A suffix '{caret}' followed by an at sign is the same as listing |