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>

Johannes Schindelin committed May 28, 2019 at 05:42 UTC 7401ab92f8c9c9f7c81763d6f7da8a63a258eff2
1 file changed +3 -2
Documentation/git-pull.txt
+3 -2
@@ -112,8 +112,9 @@ When set to `merges`, rebase using `git rebase --rebase-merges` so that
112 the local merge commits are included in the rebase (see
113 linkgit:git-rebase[1] for details).
114 +
115 -When set to preserve, rebase with the `--preserve-merges` option passed
116 -to `git rebase` so that locally created merge commits will not be flattened.
115 +When set to `preserve` (deprecated in favor of `merges`), rebase with the
116 +`--preserve-merges` option passed to `git rebase` so that locally created
117 +merge commits will not be flattened.
118 +
119 When false, merge the current branch into the upstream branch.
120 +