git/t/t4013/diff.diff_--line-prefix=abc_master_master^_side
Jacob Keller 660e113ce1 graph: add support for --line-prefix on all graph-aware output
Add an extension to git-diff and git-log (and any other graph-aware
displayable output) such that "--line-prefix=<string>" will print the
additional line-prefix on every line of output.

To make this work, we have to fix a few bugs in the graph API that force
graph_show_commit_msg to be used only when you have a valid graph.
Additionally, we extend the default_diff_output_prefix handler to work
even when no graph is enabled.

This is somewhat of a hack on top of the graph API, but I think it
should be acceptable here.

This will be used by a future extension of submodule display which
displays the submodule diff as the actual diff between the pre and post
commit in the submodule project.

Add some tests for both git-log and git-diff to ensure that the prefix
is honored correctly.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-31 18:07:09 -07:00

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$ git diff --line-prefix=abc master master^ side
abcdiff --cc dir/sub
abcindex cead32e,7289e35..992913c
abc--- a/dir/sub
abc+++ b/dir/sub
abc@@@ -1,6 -1,4 +1,8 @@@
abc A
abc B
abc +C
abc +D
abc +E
abc +F
abc+ 1
abc+ 2
abcdiff --cc file0
abcindex b414108,f4615da..10a8a9f
abc--- a/file0
abc+++ b/file0
abc@@@ -1,6 -1,6 +1,9 @@@
abc 1
abc 2
abc 3
abc +4
abc +5
abc +6
abc+ A
abc+ B
abc+ C
$