diff options
author | Junio C Hamano <junkio@cox.net> | 2007-03-26 02:07:27 +0400 |
---|---|---|
committer | Junio C Hamano <junkio@cox.net> | 2007-03-26 02:07:27 +0400 |
commit | fd2a75972e90d34bc8d4bebe1d669645557a2192 (patch) | |
tree | 3a6a8f612677447eb65bc8a1420b7dbcdaa8c792 | |
parent | cd67c8e0bc6f61ffccc12d1775bc1a200df5fe85 (diff) | |
parent | 81b6c950dede5bca60dac0834de25b6f30ec10bb (diff) |
Merge branch 'maint' of git://linux-nfs.org/~bfields/git into maint
* 'maint' of git://linux-nfs.org/~bfields/git:
user-manual: introduce "branch" and "branch head" differently
glossary: clean up cross-references
glossary: stop generating automatically
user-manual: Use def_ instead of ref_ for glossary references.
user-manual.txt: fix a tiny typo.
user-manual: run xsltproc without --nonet option
-rw-r--r-- | Documentation/Makefile | 10 | ||||
-rw-r--r-- | Documentation/glossary.txt | 742 | ||||
-rw-r--r-- | Documentation/sort_glossary.pl | 69 | ||||
-rw-r--r-- | Documentation/user-manual.txt | 48 |
4 files changed, 416 insertions, 453 deletions
diff --git a/Documentation/Makefile b/Documentation/Makefile index 7c1c9e1918..7db3fb992f 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -16,8 +16,9 @@ ARTICLES += repository-layout ARTICLES += hooks ARTICLES += everyday ARTICLES += git-tools +ARTICLES += glossary # with their own formatting rules. -SP_ARTICLES = glossary howto/revert-branch-rebase user-manual +SP_ARTICLES = howto/revert-branch-rebase user-manual DOC_HTML += $(patsubst %,%.html,$(ARTICLES) $(SP_ARTICLES)) @@ -106,16 +107,11 @@ user-manual.xml: user-manual.txt user-manual.conf $(ASCIIDOC) -b docbook -d book $< XSLT = http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl -XSLTOPTS = --nonet --xinclude --stringparam html.stylesheet docbook-xsl.css +XSLTOPTS = --xinclude --stringparam html.stylesheet docbook-xsl.css user-manual.html: user-manual.xml xsltproc $(XSLTOPTS) -o $@ $(XSLT) $< -glossary.html : glossary.txt sort_glossary.pl - cat $< | \ - perl sort_glossary.pl | \ - $(ASCIIDOC) -b xhtml11 - > glossary.html - howto-index.txt: howto-index.sh $(wildcard howto/*.txt) rm -f $@+ $@ sh ./howto-index.sh $(wildcard howto/*.txt) >$@+ diff --git a/Documentation/glossary.txt b/Documentation/glossary.txt index 9f446241e2..2465514e46 100644 --- a/Documentation/glossary.txt +++ b/Documentation/glossary.txt @@ -1,365 +1,405 @@ -alternate object database:: - Via the alternates mechanism, a repository can inherit part of its - object database from another object database, which is called - "alternate". - -bare repository:: - A bare repository is normally an appropriately named - directory with a `.git` suffix that does not have a - locally checked-out copy of any of the files under revision - control. That is, all of the `git` administrative and - control files that would normally be present in the - hidden `.git` sub-directory are directly present in - the `repository.git` directory instead, and no other files - are present and checked out. Usually publishers of public - repositories make bare repositories available. - -blob object:: - Untyped object, e.g. the contents of a file. - -branch:: - A non-cyclical graph of revisions, i.e. the complete history of - a particular revision, which is called the branch head. The - branch heads are stored in `$GIT_DIR/refs/heads/`. - -cache:: - Obsolete for: index. - -chain:: - A list of objects, where each object in the list contains a - reference to its successor (for example, the successor of a commit - could be one of its parents). - -changeset:: - BitKeeper/cvsps speak for "commit". Since git does not store - changes, but states, it really does not make sense to use - the term "changesets" with git. - -checkout:: - The action of updating the working tree to a revision which was - stored in the object database. - -cherry-picking:: - In SCM jargon, "cherry pick" means to choose a subset of - changes out of a series of changes (typically commits) - and record them as a new series of changes on top of - different codebase. In GIT, this is performed by - "git cherry-pick" command to extract the change - introduced by an existing commit and to record it based - on the tip of the current branch as a new commit. - -clean:: - A working tree is clean, if it corresponds to the revision - referenced by the current head. Also see "dirty". - -commit:: - As a verb: The action of storing the current state of the index in the - object database. The result is a revision. - As a noun: Short hand for commit object. - -commit object:: - An object which contains the information about a particular - revision, such as parents, committer, author, date and the - tree object which corresponds to the top directory of the - stored revision. - -core git:: - Fundamental data structures and utilities of git. Exposes only - limited source code management tools. - -DAG:: - Directed acyclic graph. The commit objects form a directed acyclic - graph, because they have parents (directed), and the graph of commit - objects is acyclic (there is no chain which begins and ends with the - same object). - -dangling object:: - An unreachable object which is not reachable even from other - unreachable objects; a dangling object has no references to it - from any reference or object in the repository. - -dircache:: +GIT Glossary +============ + +[[def_alternate_object_database]]alternate object database:: + Via the alternates mechanism, a <<def_repository,repository>> can + inherit part of its <<def_object_database,object database>> from another + <<def_object_database,object database>>, which is called "alternate". + +[[def_bare_repository]]bare repository:: + A <<def_bare_repository,bare repository>> is normally an appropriately + named <<def_directory,directory>> with a `.git` suffix that does not + have a locally checked-out copy of any of the files under + <<def_revision,revision>> control. That is, all of the `git` + administrative and control files that would normally be present in the + hidden `.git` sub-directory are directly present in the + `repository.git` directory instead, + and no other files are present and checked out. Usually publishers of + public repositories make bare repositories available. + +[[def_blob_object]]blob object:: + Untyped <<def_object,object>>, e.g. the contents of a file. + +[[def_branch]]branch:: + A non-cyclical graph of revisions, i.e. the complete history of a + particular <<def_revision,revision>>, which is called the + branch <<def_head,head>>. The heads + are stored in `$GIT_DIR/refs/heads/`. + +[[def_cache]]cache:: + Obsolete for: <<def_index,index>>. + +[[def_chain]]chain:: + A list of objects, where each <<def_object,object>> in the list contains + a reference to its successor (for example, the successor of a + <<def_commit,commit>> could be one of its parents). + +[[def_changeset]]changeset:: + BitKeeper/cvsps speak for "<<def_commit,commit>>". Since git does not + store changes, but states, it really does not make sense to use the term + "changesets" with git. + +[[def_checkout]]checkout:: + The action of updating the <<def_working_tree,working tree>> to a + <<def_revision,revision>> which was stored in the + <<def_object_database,object database>>. + +[[def_cherry-picking]]cherry-picking:: + In <<def_SCM,SCM>> jargon, "cherry pick" means to choose a subset of + changes out of a series of changes (typically commits) and record them + as a new series of changes on top of different codebase. In GIT, this is + performed by "git cherry-pick" command to extract the change introduced + by an existing <<def_commit,commit>> and to record it based on the tip + of the current <<def_branch,branch>> as a new <<def_commit,commit>>. + +[[def_clean]]clean:: + A <<def_working_tree,working tree>> is <<def_clean,clean>>, if it + corresponds to the <<def_revision,revision>> referenced by the current + <<def_head,head>>. Also see "<<def_dirty,dirty>>". + +[[def_commit]]commit:: + As a verb: The action of storing the current state of the + <<def_index,index>> in the <<def_object_database,object database>>. The + result is a <<def_revision,revision>>. As a noun: Short hand for + <<def_commit_object,commit object>>. + +[[def_commit_object]]commit object:: + An <<def_object,object>> which contains the information about a + particular <<def_revision,revision>>, such as parents, committer, + author, date and the <<def_tree_object,tree object>> which corresponds + to the top <<def_directory,directory>> of the stored + <<def_revision,revision>>. + +[[def_core_git]]core git:: + Fundamental data structures and utilities of git. Exposes only limited + source code management tools. + +[[def_DAG]]DAG:: + Directed acyclic graph. The <<def_commit,commit>> objects form a + directed acyclic graph, because they have parents (directed), and the + graph of <<def_commit,commit>> objects is acyclic (there is no + <<def_chain,chain>> which begins and ends with the same + <<def_object,object>>). + +[[def_dangling_object]]dangling object:: + An <<def_unreachable_object,unreachable object>> which is not + <<def_reachable,reachable>> even from other unreachable objects; a + <<def_dangling_object,dangling object>> has no references to it from any + reference or <<def_object,object>> in the <<def_repository,repository>>. + +[[def_dircache]]dircache:: You are *waaaaay* behind. -dirty:: - A working tree is said to be dirty if it contains modifications - which have not been committed to the current branch. - -directory:: +[[def_directory]]directory:: The list you get with "ls" :-) -ent:: - Favorite synonym to "tree-ish" by some total geeks. See +[[def_dirty]]dirty:: + A <<def_working_tree,working tree>> is said to be <<def_dirty,dirty>> if + it contains modifications which have not been committed to the current + <<def_branch,branch>>. + +[[def_ent]]ent:: + Favorite synonym to "<<def_tree-ish,tree-ish>>" by some total geeks. See `http://en.wikipedia.org/wiki/Ent_(Middle-earth)` for an in-depth - explanation. Avoid this term, not to confuse people. - -fast forward:: - A fast-forward is a special type of merge where you have - a revision and you are "merging" another branch's changes - that happen to be a descendant of what you have. - In such these cases, you do not make a new merge commit but - instead just update to his revision. This will happen - frequently on a tracking branch of a remote repository. - -fetch:: - Fetching a branch means to get the branch's head ref from a - remote repository, to find out which objects are missing from - the local object database, and to get them, too. - -file system:: - Linus Torvalds originally designed git to be a user space file - system, i.e. the infrastructure to hold files and directories. - That ensured the efficiency and speed of git. - -git archive:: - Synonym for repository (for arch people). - -grafts:: - Grafts enables two otherwise different lines of development to be - joined together by recording fake ancestry information for commits. - This way you can make git pretend the set of parents a commit - has is different from what was recorded when the commit was created. - Configured via the `.git/info/grafts` file. - -hash:: - In git's context, synonym to object name. - -head:: - The top of a branch. It contains a ref to the corresponding - commit object. - -head ref:: - A ref pointing to a head. Often, this is abbreviated to "head". - Head refs are stored in `$GIT_DIR/refs/heads/`. - -hook:: - During the normal execution of several git commands, - call-outs are made to optional scripts that allow - a developer to add functionality or checking. - Typically, the hooks allow for a command to be pre-verified - and potentially aborted, and allow for a post-notification - after the operation is done. - The hook scripts are found in the `$GIT_DIR/hooks/` directory, - and are enabled by simply making them executable. - -index:: - A collection of files with stat information, whose contents are - stored as objects. The index is a stored version of your working - tree. Truth be told, it can also contain a second, and even a third - version of a working tree, which are used when merging. - -index entry:: - The information regarding a particular file, stored in the index. - An index entry can be unmerged, if a merge was started, but not - yet finished (i.e. if the index contains multiple versions of - that file). - -master:: - The default development branch. Whenever you create a git - repository, a branch named "master" is created, and becomes - the active branch. In most cases, this contains the local + explanation. Avoid this term, not to confuse people. + +[[def_fast_forward]]fast forward:: + A fast-forward is a special type of <<def_merge,merge>> where you have a + <<def_revision,revision>> and you are "merging" another + <<def_branch,branch>>'s changes that happen to be a descendant of what + you have. In such these cases, you do not make a new <<def_merge,merge>> + <<def_commit,commit>> but instead just update to his + <<def_revision,revision>>. This will happen frequently on a + <<def_tracking_branch,tracking branch>> of a remote + <<def_repository,repository>>. + +[[def_fetch]]fetch:: + Fetching a <<def_branch,branch>> means to get the + <<def_branch,branch>>'s <<def_head_ref,head ref>> from a remote + <<def_repository,repository>>, to find out which objects are missing + from the local <<def_object_database,object database>>, and to get them, + too. + +[[def_file_system]]file system:: + Linus Torvalds originally designed git to be a user space file system, + i.e. the infrastructure to hold files and directories. That ensured the + efficiency and speed of git. + +[[def_git_archive]]git archive:: + Synonym for <<def_repository,repository>> (for arch people). + +[[def_grafts]]grafts:: + Grafts enables two otherwise different lines of development to be joined + together by recording fake ancestry information for commits. This way + you can make git pretend the set of parents a <<def_commit,commit>> has + is different from what was recorded when the <<def_commit,commit>> was + created. Configured via the `.git/info/grafts` file. + +[[def_hash]]hash:: + In git's context, synonym to <<def_object_name,object name>>. + +[[def_head]]head:: + The top of a <<def_branch,branch>>. It contains a <<def_ref,ref>> to the + corresponding <<def_commit_object,commit object>>. + +[[def_head_ref]]head ref:: + A <<def_ref,ref>> pointing to a <<def_head,head>>. Often, this is + abbreviated to "<<def_head,head>>". Head refs are stored in + `$GIT_DIR/refs/heads/`. + +[[def_hook]]hook:: + During the normal execution of several git commands, call-outs are made + to optional scripts that allow a developer to add functionality or + checking. Typically, the hooks allow for a command to be pre-verified + and potentially aborted, and allow for a post-notification after the + operation is done. The <<def_hook,hook>> scripts are found in the + `$GIT_DIR/hooks/` <<def_directory,directory>>, and are enabled by simply + making them executable. + +[[def_index]]index:: + A collection of files with stat information, whose contents are stored + as objects. The <<def_index,index>> is a stored version of your working + <<def_tree,tree>>. Truth be told, it can also contain a second, and even + a third version of a <<def_working_tree,working tree>>, which are used + when merging. + +[[def_index_entry]]index entry:: + The information regarding a particular file, stored in the + <<def_index,index>>. An <<def_index_entry,index entry>> can be unmerged, + if a <<def_merge,merge>> was started, but not yet finished (i.e. if the + <<def_index,index>> contains multiple versions of that file). + +[[def_master]]master:: + The default development <<def_branch,branch>>. Whenever you create a git + <<def_repository,repository>>, a <<def_branch,branch>> named + "<<def_master,master>>" is created, and becomes the active + <<def_branch,branch>>. In most cases, this contains the local development, though that is purely conventional and not required. -merge:: - To merge branches means to try to accumulate the changes since a - common ancestor and apply them to the first branch. An automatic - merge uses heuristics to accomplish that. Evidently, an automatic - merge can fail. - -object:: - The unit of storage in git. It is uniquely identified by - the SHA1 of its contents. Consequently, an object can not - be changed. - -object database:: - Stores a set of "objects", and an individual object is identified - by its object name. The objects usually live in `$GIT_DIR/objects/`. - -object identifier:: - Synonym for object name. - -object name:: - The unique identifier of an object. The hash of the object's contents - using the Secure Hash Algorithm 1 and usually represented by the 40 - character hexadecimal encoding of the hash of the object (possibly - followed by a white space). - -object type:: - One of the identifiers "commit","tree","tag" and "blob" describing - the type of an object. - -octopus:: - To merge more than two branches. Also denotes an intelligent - predator. - -origin:: - The default upstream repository. Most projects have at - least one upstream project which they track. By default - 'origin' is used for that purpose. New upstream updates +[[def_merge]]merge:: + To <<def_merge,merge>> branches means to try to accumulate the changes + since a common ancestor and apply them to the first + <<def_branch,branch>>. An automatic <<def_merge,merge>> uses heuristics + to accomplish that. Evidently, an automatic <<def_merge,merge>> can + fail. + +[[def_object]]object:: + The unit of storage in git. It is uniquely identified by the + <<def_SHA1,SHA1>> of its contents. Consequently, an + <<def_object,object>> can not be changed. + +[[def_object_database]]object database:: + Stores a set of "objects", and an individual <<def_object,object>> is + identified by its <<def_object_name,object name>>. The objects usually + live in `$GIT_DIR/objects/`. + +[[def_object_identifier]]object identifier:: + Synonym for <<def_object_name,object name>>. + +[[def_object_name]]object name:: + The unique identifier of an <<def_object,object>>. The <<def_hash,hash>> + of the <<def_object,object>>'s contents using the Secure Hash Algorithm + 1 and usually represented by the 40 character hexadecimal encoding of + the <<def_hash,hash>> of the <<def_object,object>> (possibly followed by + a white space). + +[[def_object_type]]object type:: + One of the identifiers + "<<def_commit,commit>>","<<def_tree,tree>>","<<def_tag,tag>>" or "<<def_blob_object,blob>>" + describing the type of an <<def_object,object>>. + +[[def_octopus]]octopus:: + To <<def_merge,merge>> more than two branches. Also denotes an + intelligent predator. + +[[def_origin]]origin:: + The default upstream <<def_repository,repository>>. Most projects have + at least one upstream project which they track. By default + '<<def_origin,origin>>' is used for that purpose. New upstream updates will be fetched into remote tracking branches named origin/name-of-upstream-branch, which you can see using - "git branch -r". + "git <<def_branch,branch>> -r". -pack:: - A set of objects which have been compressed into one file (to save - space or to transmit them efficiently). +[[def_pack]]pack:: + A set of objects which have been compressed into one file (to save space + or to transmit them efficiently). -pack index:: +[[def_pack_index]]pack index:: The list of identifiers, and other information, of the objects in a - pack, to assist in efficiently accessing the contents of a pack. - -parent:: - A commit object contains a (possibly empty) list of the logical - predecessor(s) in the line of development, i.e. its parents. - -pickaxe:: - The term pickaxe refers to an option to the diffcore routines - that help select changes that add or delete a given text string. - With the --pickaxe-all option, it can be used to view the - full changeset that introduced or removed, say, a particular - line of text. See gitlink:git-diff[1]. - -plumbing:: - Cute name for core git. - -porcelain:: - Cute name for programs and program suites depending on core git, - presenting a high level access to core git. Porcelains expose - more of a SCM interface than the plumbing. - -pull:: - Pulling a branch means to fetch it and merge it. - -push:: - Pushing a branch means to get the branch's head ref from a remote - repository, find out if it is an ancestor to the branch's local - head ref is a direct, and in that case, putting all objects, which - are reachable from the local head ref, and which are missing from - the remote repository, into the remote object database, and updating - the remote head ref. If the remote head is not an ancestor to the - local head, the push fails. - -reachable:: - All of the ancestors of a given commit are said to be reachable from - that commit. More generally, one object is reachable from another if - we can reach the one from the other by a chain that follows tags to - whatever they tag, commits to their parents or trees, and trees to the - trees or blobs that they contain. - -rebase:: - To clean a branch by starting from the head of the main line of - development ("master"), and reapply the (possibly cherry-picked) - changes from that branch. - -ref:: - A 40-byte hex representation of a SHA1 or a name that denotes - a particular object. These may be stored in `$GIT_DIR/refs/`. - -refspec:: - A refspec is used by fetch and push to describe the mapping - between remote ref and local ref. They are combined with - a colon in the format <src>:<dst>, preceded by an optional - plus sign, +. For example: - `git fetch $URL refs/heads/master:refs/heads/origin` - means "grab the master branch head from the $URL and store - it as my origin branch head". - And `git push $URL refs/heads/master:refs/heads/to-upstream` - means "publish my master branch head as to-upstream branch - at $URL". See also gitlink:git-push[1] - -repository:: - A collection of refs together with an object database containing - all objects, which are reachable from the refs, possibly accompanied - by meta data from one or more porcelains. A repository can - share an object database with other repositories. - -resolve:: - The action of fixing up manually what a failed automatic merge - left behind. - -revision:: - A particular state of files and directories which was stored in - the object database. It is referenced by a commit object. - -rewind:: - To throw away part of the development, i.e. to assign the head to - an earlier revision. - -SCM:: + <<def_pack,pack>>, to assist in efficiently accessing the contents of a + <<def_pack,pack>>. + +[[def_parent]]parent:: + A <<def_commit_object,commit object>> contains a (possibly empty) list + of the logical predecessor(s) in the line of development, i.e. its + parents. + +[[def_pickaxe]]pickaxe:: + The term <<def_pickaxe,pickaxe>> refers to an option to the diffcore + routines that help select changes that add or delete a given text + string. With the --pickaxe-all option, it can be used to view the full + <<def_changeset,changeset>> that introduced or removed, say, a + particular line of text. See gitlink:git-diff[1]. + +[[def_plumbing]]plumbing:: + Cute name for <<def_core_git,core git>>. + +[[def_porcelain]]porcelain:: + Cute name for programs and program suites depending on + <<def_core_git,core git>>, presenting a high level access to + <<def_core_git,core git>>. Porcelains expose more of a <<def_SCM,SCM>> + interface than the <<def_plumbing,plumbing>>. + +[[def_pull]]pull:: + Pulling a <<def_branch,branch>> means to <<def_fetch,fetch>> it and + <<def_merge,merge>> it. + +[[def_push]]push:: + Pushing a <<def_branch,branch>> means to get the <<def_branch,branch>>'s + <<def_head_ref,head ref>> from a remote <<def_repository,repository>>, + find out if it is an ancestor to the <<def_branch,branch>>'s local + <<def_head_ref,head ref>> is a direct, and in that case, putting all + objects, which are <<def_reachable,reachable>> from the local + <<def_head_ref,head ref>>, and which are missing from the remote + <<def_repository,repository>>, into the remote + <<def_object_database,object database>>, and updating the remote + <<def_head_ref,head ref>>. If the remote <<def_head,head>> is not an + ancestor to the local <<def_head,head>>, the <<def_push,push>> fails. + +[[def_reachable]]reachable:: + All of the ancestors of a given <<def_commit,commit>> are said to be + <<def_reachable,reachable>> from that <<def_commit,commit>>. More + generally, one <<def_object,object>> is <<def_reachable,reachable>> from + another if we can reach the one from the other by a <<def_chain,chain>> + that follows <<def_tag,tags>> to whatever they tag, + <<def_commit_object,commits>> to their parents or trees, and + <<def_tree_object,trees>> to the trees or <<def_blob_object,blobs>> + that they contain. + +[[def_rebase]]rebase:: + To reapply a series of changes from a <<def_branch,branch>> to a + different base, and reset the <<def_head,head>> of that branch + to the result. + +[[def_ref]]ref:: + A 40-byte hex representation of a <<def_SHA1,SHA1>> or a name that + denotes a particular <<def_object,object>>. These may be stored in + `$GIT_DIR/refs/`. + +[[def_refspec]]refspec:: + A <<def_refspec,refspec>> is used by <<def_fetch,fetch>> and + <<def_push,push>> to describe the mapping between remote <<def_ref,ref>> + and local <<def_ref,ref>>. They are combined with a colon in the format + <src>:<dst>, preceded by an optional plus sign, +. For example: `git + fetch $URL refs/heads/master:refs/heads/origin` means + "grab the master <<def_branch,branch>> <<def_head,head>> + from the $URL and store it as my origin + <<def_branch,branch>> <<def_head,head>>". And `git <<def_push,push>> + $URL refs/heads/master:refs/heads/to-upstream` means + "publish my master <<def_branch,branch>> + <<def_head,head>> as to-upstream <<def_branch,branch>> at $URL". See + also gitlink:git-push[1] + +[[def_repository]]repository:: + A collection of refs together with an <<def_object_database,object + database>> containing all objects which are <<def_reachable,reachable>> + from the refs, possibly accompanied by meta data from one or more + porcelains. A <<def_repository,repository>> can share an + <<def_object_database,object database>> with other repositories. + +[[def_resolve]]resolve:: + The action of fixing up manually what a failed automatic + <<def_merge,merge>> left behind. + +[[def_revision]]revision:: + A particular state of files and directories which was stored in the + <<def_object_database,object database>>. It is referenced by a + <<def_commit_object,commit object>>. + +[[def_rewind]]rewind:: + To throw away part of the development, i.e. to assign the + <<def_head,head>> to an earlier <<def_revision,revision>>. + +[[def_SCM]]SCM:: Source code management (tool). -SHA1:: - Synonym for object name. - -shallow repository:: - A shallow repository has an incomplete history some of - whose commits have parents cauterized away (in other - words, git is told to pretend that these commits do not - have the parents, even though they are recorded in the - commit object). This is sometimes useful when you are - interested only in the recent history of a project even - though the real history recorded in the upstream is - much larger. A shallow repository is created by giving - `--depth` option to gitlink:git-clone[1], and its - history can be later deepened with gitlink:git-fetch[1]. - -symref:: - Symbolic reference: instead of containing the SHA1 id itself, it - is of the format 'ref: refs/some/thing' and when referenced, it - recursively dereferences to this reference. 'HEAD' is a prime - example of a symref. Symbolic references are manipulated with - the gitlink:git-symbolic-ref[1] command. - -topic branch:: - A regular git branch that is used by a developer to - identify a conceptual line of development. Since branches - are very easy and inexpensive, it is often desirable to - have several small branches that each contain very well - defined concepts or small incremental yet related changes. - -tracking branch:: - A regular git branch that is used to follow changes from - another repository. A tracking branch should not contain - direct modifications or have local commits made to it. - A tracking branch can usually be identified as the - right-hand-side ref in a Pull: refspec. - -tree object:: - An object containing a list of file names and modes along with refs - to the associated blob and/or tree objects. A tree is equivalent - to a directory. - -tree:: - Either a working tree, or a tree object together with the - dependent blob and tree objects (i.e. a stored representation - of a working tree). - -tree-ish:: - A ref pointing to either a commit object, a tree object, or a - tag object pointing to a tag or commit or tree object. - -tag object:: - An object containing a ref pointing to another object, which can - contain a message just like a commit object. It can also - contain a (PGP) signature, in which case it is called a "signed - tag object". - -tag:: - A ref pointing to a tag or commit object. In contrast to a head, - a tag is not changed by a commit. Tags (not tag objects) are - stored in `$GIT_DIR/refs/tags/`. A git tag has nothing to do with - a Lisp tag (which is called object type in git's context). - A tag is most typically used to mark a particular point in the - commit ancestry chain. - -unmerged index:: - An index which contains unmerged index entries. - -unreachable object:: - An object which is not reachable from a branch, tag, or any - other reference. - -working tree:: - The set of files and directories currently being worked on, - i.e. you can work in your working tree without using git at all. - +[[def_SHA1]]SHA1:: + Synonym for <<def_object_name,object name>>. + +[[def_shallow_repository]]shallow repository:: + A <<def_shallow_repository,shallow repository>> has an incomplete + history some of whose commits have parents cauterized away (in other + words, git is told to pretend that these commits do not have the + parents, even though they are recorded in the <<def_commit_object,commit + object>>). This is sometimes useful when you are interested only in the + recent history of a project even though the real history recorded in the + upstream is much larger. A <<def_shallow_repository,shallow repository>> + is created by giving the `--depth` option to gitlink:git-clone[1], and + its history can be later deepened with gitlink:git-fetch[1]. + +[[def_symref]]symref:: + Symbolic reference: instead of containing the <<def_SHA1,SHA1>> id + itself, it is of the format 'ref: refs/some/thing' and when + referenced, it recursively dereferences to this reference. 'HEAD' is a + prime example of a <<def_symref,symref>>. Symbolic references are + manipulated with the gitlink:git-symbolic-ref[1] command. + +[[def_tag]]tag:: + A <<def_ref,ref>> pointing to a <<def_tag,tag>> or + <<def_commit_object,commit object>>. In contrast to a <<def_head,head>>, + a tag is not changed by a <<def_commit,commit>>. Tags (not + <<def_tag_object,tag objects>>) are stored in `$GIT_DIR/refs/tags/`. A + git tag has nothing to do with a Lisp tag (which would be + called an <<def_object_type,object type>> in git's context). A + tag is most typically used to mark a particular point in the + <<def_commit,commit>> ancestry <<def_chain,chain>>. + +[[def_tag_object]]tag object:: + An <<def_object,object>> containing a <<def_ref,ref>> pointing to + another <<def_object,object>>, which can contain a message just like a + <<def_commit_object,commit object>>. It can also contain a (PGP) + signature, in which case it is called a "signed <<def_tag_object,tag + object>>". + +[[def_topic_branch]]topic branch:: + A regular git <<def_branch,branch>> that is used by a developer to + identify a conceptual line of development. Since branches are very easy + and inexpensive, it is often desirable to have several small branches + that each contain very well defined concepts or small incremental yet + related changes. + +[[def_tracking_branch]]tracking branch:: + A regular git <<def_branch,branch>> that is used to follow changes from + another <<def_repository,repository>>. A <<def_tracking_branch,tracking + branch>> should not contain direct modifications or have local commits + made to it. A <<def_tracking_branch,tracking branch>> can usually be + identified as the right-hand-side <<def_ref,ref>> in a Pull: + <<def_refspec,refspec>>. + +[[def_tree]]tree:: + Either a <<def_working_tree,working tree>>, or a <<def_tree_object,tree + object>> together with the dependent blob and <<def_tree,tree>> objects + (i.e. a stored representation of a <<def_working_tree,working tree>>). + +[[def_tree_object]]tree object:: + An <<def_object,object>> containing a list of file names and modes along + with refs to the associated blob and/or tree objects. A + <<def_tree,tree>> is equivalent to a <<def_directory,directory>>. + +[[def_tree-ish]]tree-ish:: + A <<def_ref,ref>> pointing to either a <<def_commit_object,commit + object>>, a <<def_tree_object,tree object>>, or a <<def_tag_object,tag + object>> pointing to a <<def_tag,tag>> or <<def_commit,commit>> or + <<def_tree_object,tree object>>. + +[[def_unmerged_index]]unmerged index:: + An <<def_index,index>> which contains unmerged + <<def_index_entry,index entries>>. + +[[def_unreachable_object]]unreachable object:: + An <<def_object,object>> which is not <<def_reachable,reachable>> from a + <<def_branch,branch>>, <<def_tag,tag>>, or any other reference. + +[[def_working_tree]]working tree:: + The set of files and directories currently being worked on, i.e. you can + work in your <<def_working_tree,working tree>> without using git at all. diff --git a/Documentation/sort_glossary.pl b/Documentation/sort_glossary.pl deleted file mode 100644 index 05dc7b2c7b..0000000000 --- a/Documentation/sort_glossary.pl +++ /dev/null @@ -1,69 +0,0 @@ -#!/usr/bin/perl - -%terms=(); - -while(<>) { - if(/^(\S.*)::$/) { - my $term=$1; - if(defined($terms{$term})) { - die "$1 defined twice\n"; - } - $terms{$term}=""; - LOOP: while(<>) { - if(/^$/) { - last LOOP; - } - if(/^ \S/) { - $terms{$term}.=$_; - } else { - die "Error 1: $_"; - } - } - } -} - -sub format_tab_80 ($) { - my $text=$_[0]; - my $result=""; - $text=~s/\s+/ /g; - $text=~s/^\s+//; - while($text=~/^(.{1,72})(|\s+(\S.*)?)$/) { - $result.=" ".$1."\n"; - $text=$3; - } - return $result; -} - -sub no_spaces ($) { - my $result=$_[0]; - $result=~tr/ /_/; - return $result; -} - -print 'GIT Glossary -============ - -This list is sorted alphabetically: - -'; - -@keys=sort {uc($a) cmp uc($b)} keys %terms; -$pattern='(\b(?<!link:git-)'.join('\b|\b(?<!-)',reverse @keys).'\b)'; -foreach $key (@keys) { - $terms{$key}=~s/$pattern/sprintf "<<ref_".no_spaces($1).",$1>>";/eg; - print '[[ref_'.no_spaces($key).']]'.$key."::\n" - .format_tab_80($terms{$key})."\n"; -} - -print ' - -Author ------- -Written by Johannes Schindelin <Johannes.Schindelin@gmx.de> and -the git-list <git@vger.kernel.org>. - -GIT ---- -Part of the link:git.html[git] suite -'; - diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt index 0919574fb4..3ed9f84524 100644 --- a/Documentation/user-manual.txt +++ b/Documentation/user-manual.txt @@ -288,21 +288,22 @@ collection of files. It stores the history as a compressed collection of interrelated snapshots (versions) of the project's contents. -A single git repository may contain multiple branches. Each branch -is a bookmark referencing a particular point in the project history. -The gitlink:git-branch[1] command shows you the list of branches: +A single git repository may contain multiple branches. It keeps track +of them by keeping a list of <<def_head,heads>> which reference the +latest version on each branch; the gitlink:git-branch[1] command shows +you the list of branch heads: ------------------------------------------------ $ git branch * master ------------------------------------------------ -A freshly cloned repository contains a single branch, named "master", -and the working directory contains the version of the project -referred to by the master branch. +A freshly cloned repository contains a single branch head, named +"master", and working directory is initialized to the state of +the project referred to by "master". -Most projects also use tags. Tags, like branches, are references -into the project's history, and can be listed using the +Most projects also use <<def_tag,tags>>. Tags, like heads, are +references into the project's history, and can be listed using the gitlink:git-tag[1] command: ------------------------------------------------ @@ -320,9 +321,9 @@ v2.6.13 ------------------------------------------------ Tags are expected to always point at the same version of a project, -while branches are expected to advance as development progresses. +while heads are expected to advance as development progresses. -Create a new branch pointing to one of these versions and check it +Create a new branch head pointing to one of these versions and check it out using gitlink:git-checkout[1]: ------------------------------------------------ @@ -346,10 +347,10 @@ the current branch to point at v2.6.17 instead, with $ git reset --hard v2.6.17 ------------------------------------------------ -Note that if the current branch was your only reference to a +Note that if the current branch head was your only reference to a particular point in history, then resetting that branch may leave you -with no way to find the history it used to point to; so use this -command carefully. +with no way to find the history it used to point to; so use this command +carefully. Understanding History: Commits ------------------------------ @@ -452,17 +453,15 @@ be replaced with another letter or number. Understanding history: What is a branch? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Though we've been using the word "branch" to mean a kind of reference -to a particular commit, the word branch is also commonly used to -refer to the line of commits leading up to that point. In the -example above, git may think of the branch named "A" as just a -pointer to one particular commit, but we may refer informally to the -line of three commits leading up to that point as all being part of +When we need to be precise, we will use the word "branch" to mean a line +of development, and "branch head" (or just "head") to mean a reference +to the most recent commit on a branch. In the example above, the branch +head named "A" is a pointer to one particular commit, but we refer to +the line of three commits leading up to that point as all being part of "branch A". -If we need to make it clear that we're just talking about the most -recent commit on the branch, we may refer to that commit as the -"head" of the branch. +However, when no confusion will result, we often just use the term +"branch" both for branches and for branch heads. Manipulating branches --------------------- @@ -1698,7 +1697,7 @@ If you and maintainer both have accounts on the same machine, then then you can just pull changes from each other's repositories directly; note that all of the commands (gitlink:git-clone[1], git-fetch[1], git-pull[1], etc.) that accept a URL as an argument -will also accept a local file patch; so, for example, you can +will also accept a local directory name; so, for example, you can use ------------------------------------------------- @@ -3013,9 +3012,6 @@ confusing and scary messages, but it won't actually do anything bad. In contrast, running "git prune" while somebody is actively changing the repository is a *BAD* idea). -Glossary of git terms -===================== - include::glossary.txt[] Notes and todo list for this manual |