X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=Documentation%2Fglossary.txt;h=2331be5a71626d03d3f8f1720107418dc5174bc3;hb=50b4e0c178777a27164eb67676593255a9cbd035;hp=7456cffd3306f83ce466a5a4afbdadc4fe980fb1;hpb=d430042bcf4d9da3e5f3cb9fee57c9d73bc40bff;p=git.git diff --git a/Documentation/glossary.txt b/Documentation/glossary.txt index 7456cffd..2331be5a 100644 --- a/Documentation/glossary.txt +++ b/Documentation/glossary.txt @@ -1,5 +1,5 @@ object:: - The unit of storage in GIT. It is uniquely identified by + The unit of storage in git. It is uniquely identified by the SHA1 of its contents. Consequently, an object can not be changed. @@ -19,32 +19,38 @@ hash:: In git's context, synonym to object name. object database:: - Stores a set of "objects", and an individial object is identified - by its object name. The object usually live in $GIT_DIR/objects/. + Stores a set of "objects", and an individual object is identified + by its object name. The objects usually live in `$GIT_DIR/objects/`. blob object:: Untyped object, e.g. the contents of a file. 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 object is - equivalent to a directory. + 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). +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). + index:: A collection of files with stat information, whose contents are - stored as objects. The cache is a stored version of your working + 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 cache contains multiple versions of + yet finished (i.e. if the index contains multiple versions of that file). unmerged index: @@ -69,7 +75,7 @@ checkout:: stored in the object database. commit:: - As a verb: The action of storing the current state of the cache in the + 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. @@ -103,15 +109,15 @@ head:: 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 $GIT_DIR/refs/heads/. + branch heads are stored in `$GIT_DIR/refs/heads/`. ref:: A 40-byte hex representation of a SHA1 pointing to a particular - object. These may be stored in $GIT_DIR/refs/. + object. These may be stored in `$GIT_DIR/refs/`. head ref:: A ref pointing to a head. Often, this is abbreviated to "head". - Head refs are stored in $GIT_DIR/refs/heads/. + Head refs are stored in `$GIT_DIR/refs/heads/`. tree-ish:: A ref pointing to either a commit object, a tree object, or a @@ -119,7 +125,7 @@ tree-ish:: ent:: Favorite synonym to "tree-ish" by some total geeks. See - http://en.wikipedia.org/wiki/Ent_(Middle-earth) for an in-depth + `http://en.wikipedia.org/wiki/Ent_(Middle-earth)` for an in-depth explanation. tag object:: @@ -131,7 +137,7 @@ 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 $GIT_DIR/refs/tags/. A git tag has nothing to do with + stored in `$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. @@ -142,6 +148,10 @@ merge:: merge uses heuristics to accomplish that. Evidently, an automatic merge can fail. +octopus:: + To merge more than two branches. Also denotes an intelligent + predator. + resolve:: The action of fixing up manually what a failed automatic merge left behind.