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SVN, CVS, Git, Microsoft TFS, Perforce, VSS using command line Yes diff: No No No Yes Yes with patch Yes with patch No No diff3: No No No Eclipse (compare) Yes CVS, Subversion, Git, Mercurial, Baazar: Yes Ediff: Yes Yes RCS, CVS, SVN, Mercurial, git (anything supported by Emacs' VC-mode) [36] Yes Yes Yes ExamDiff Pro: Yes [37] Yes [38] normal ...
A diff shows differences per line, so it synchronizes between revisions by matching the newlines and unchanged lines. Some editors find that having additional line breaks to break up the text improves the diff function. Otherwise, those large, massive globs of text can be difficult to compare after a split.
In computing, the utility diff is a data comparison tool that computes and displays the differences between the contents of files. Unlike edit distance notions used for other purposes, diff is line-oriented rather than character-oriented, but it is like Levenshtein distance in that it tries to determine the smallest set of deletions and insertions to create one file from the other.
Meld is a visual diff and merge tool, targeted at developers. It allows users to compare two or three files or directories visually, color-coding the different lines. Meld can be used for comparing files, directories, and version controlled repositories.
Unstructured merge operates on raw text, typically using lines of text as atomic units. This is what Unix tools (diff/patch) and CVS tools (SVN, Git) use. This is limited [opinion], as a line of text does not represent the structure of source code.
Record: include only some changes to a file in a commit and not others; Note: Commands in green rectangles that are not surrounded by [square brackets] are at an interactive command-line prompt. Text in [square brackets] is an explanation of where to find equivalent functionality.
The optimal way to display the results of a file comparison depends on many factors, including the type of source data. The fixed lines of programming code provide a clear unit of comparison. This does not work with documents, where adding a single word may cause the following lines to wrap differently, but still not change the content.
ExamDiff Pro is a commercial software utility for visual file and directory comparison, for Microsoft Windows. ExamDiff Pro has a double-pane view that allows side-by-side comparisons, with color-coded line numbers indicating whether each line is added, deleted, or changed. ExamDiff Pro can compare text and binary files, and directories.