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GSP64/usr/share/doc/git/html/git-diff-pairs.adoc

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+git-diff-pairs(1)
+=================
+
+NAME
+----
+git-diff-pairs - Compare the content and mode of provided blob pairs
+
+SYNOPSIS
+--------
+[synopsis]
+git diff-pairs -z [<diff-options>]
+
+DESCRIPTION
+-----------
+Show changes for file pairs provided on stdin. Input for this command must be
+in the NUL-terminated raw output format as generated by commands such as `git
+diff-tree -z -r --raw`. By default, the outputted diffs are computed and shown
+in the patch format when stdin closes.
+
+A single NUL byte may be written to stdin between raw input lines to compute
+file pair diffs up to that point instead of waiting for stdin to close. A NUL
+byte is also written to the output to delimit between these batches of diffs.
+
+Usage of this command enables the traditional diff pipeline to be broken up
+into separate stages where `diff-pairs` acts as the output phase. Other
+commands, such as `diff-tree`, may serve as a frontend to compute the raw
+diff format used as input.
+
+Instead of computing diffs via `git diff-tree -p -M` in one step, `diff-tree`
+can compute the file pairs and rename information without the blob diffs. This
+output can be fed to `diff-pairs` to generate the underlying blob diffs as done
+in the following example:
+
+-----------------------------
+git diff-tree -z -r -M $a $b |
+git diff-pairs -z
+-----------------------------
+
+Computing the tree diff upfront with rename information allows patch output
+from `diff-pairs` to be progressively computed over the course of potentially
+multiple invocations.
+
+Pathspecs are not currently supported by `diff-pairs`. Pathspec limiting should
+be performed by the upstream command generating the raw diffs used as input.
+
+Tree objects are not currently supported as input and are rejected.
+
+Abbreviated object IDs in the `diff-pairs` input are not supported. Outputted
+object IDs can be abbreviated using the `--abbrev` option.
+
+OPTIONS
+-------
+
+include::diff-options.adoc[]
+
+include::diff-generate-patch.adoc[]
+
+GIT
+---
+Part of the linkgit:git[1] suite