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The users of the version control system can branch any branch. Branches are also known as trees, streams or codelines. The originating branch is sometimes called the parent branch, the upstream branch (or simply upstream, especially if the branches are maintained by different organizations or individuals), or the backing stream.
Git supports rapid branching and merging, and includes specific tools for visualizing and navigating a non-linear development history. In Git, a core assumption is that a change will be merged more often than it is written, as it is passed around to various reviewers. In Git, branches are very lightweight: a branch is only a reference to one ...
branch – branch –no-tree [nb 62] pull push init – branch checkout – checkout –lightweight [nb 63] update N/A add rm mv N/A merge commit revert send rebase [nb 64] BitKeeper: setup clone pull -R push clone co pull Unknown add rm mv cp pull commit undo makepatch collapse IBM DevOps Code ClearCase: init N/A N/A N/A N/A checkout update
Version control (also known as revision control, source control, and source code management) is the software engineering practice of controlling, organizing, and tracking different versions in history of computer files; primarily source code text files, but generally any type of file.
For version control, Git (and, by extension, GitHub) allows pull requests to propose changes to the source code. Users who can review the proposed changes can see a diff between the requested changes and approve them. In Git terminology, this action is called "committing" and one instance of it is a "commit."
Magit (/ ˈ m æ d ʒ ɪ t / MA-jit or / ˈ m ʌ ɡ ɪ t / MUH-git [2]) is an interface to the Git version control system, available as a GNU Emacs package [3] [4] written in Emacs Lisp.It is available through the MELPA package repository, [5] on which it is the most-downloaded non-library package, with over 4.3 million downloads as of September 2024.
This technique is used by the Git revision control tool. (Git's recursive merge implementation also handles other awkward cases, like a file being modified in one version and renamed in the other, but those are extensions to its three-way merge implementation; not part of the technique for finding three versions to merge.)
Source Code Control System (SCCS) [open, shared] – part of UNIX; based on interleaved deltas, can construct versions as arbitrary sets of revisions; extracting an arbitrary version takes essentially the same time and is thus more useful in environments that rely heavily on branching and merging with multiple "current" and identical versions