| Value | Meaning |
|---|---|
| GIT_DIFF_BINARY_NONE | Whether there is data in this binary structure or not. If this is 1, then this was produced and included binary content. If this is 0 then this was generated knowing only that a binary file changed but without providing the data, probably from a patch that said Binary files a/file.txt and b/file.txt differ. |
| GIT_DIFF_BINARY_LITERAL | The binary data is the literal contents of the file. |
| GIT_DIFF_BINARY_DELTA | The binary data is the delta from one side to the other. |
Structure describing the binary contents of a diff.
A binary file / delta is a file (or pair) for which no text diffs should be generated. A diff can contain delta entries that are binary, but no diff content will be output for those files. There is a base heuristic for binary detection and you can further tune the behavior with git attributes or diff flags and option settings.