docs: say that `--rebase=preserve` is deprecated

As of Git v2.22.0, the `--preserve-merges` backend of `git rebase` will
be officially deprecated in favor of the `--rebase-merges` backend.
Consequently, `git pull --rebase=preserve` will also be deprected. State
this explicitly.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-pull.txt b/Documentation/git-pull.txt
index 118d9d86f79427373eb92753abf7e134ed925fe8..a5e9501a0aa6503eaab62190253afa750dd76eef 100644 (file)
--- a/Documentation/git-pull.txt
+++ b/Documentation/git-pull.txt
@@ -112,8 +112,9 @@ When set to `merges`, rebase using `git rebase --rebase-merges` so that
 the local merge commits are included in the rebase (see
 linkgit:git-rebase[1] for details).
 +
-When set to preserve, rebase with the `--preserve-merges` option passed
-to `git rebase` so that locally created merge commits will not be flattened.
+When set to `preserve` (deprecated in favor of `merges`), rebase with the
+`--preserve-merges` option passed to `git rebase` so that locally created
+merge commits will not be flattened.
 +
 When false, merge the current branch into the upstream branch.
 +