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-rw-r--r--Documentation/git-replace.txt29
1 files changed, 26 insertions, 3 deletions
diff --git a/Documentation/git-replace.txt b/Documentation/git-replace.txt
index e0b4057976..f373ab48d4 100644
--- a/Documentation/git-replace.txt
+++ b/Documentation/git-replace.txt
@@ -20,8 +20,14 @@ The name of the 'replace' reference is the SHA-1 of the object that is
replaced. The content of the 'replace' reference is the SHA-1 of the
replacement object.
+The replaced object and the replacement object must be of the same type.
+This restriction can be bypassed using `-f`.
+
Unless `-f` is given, the 'replace' reference must not yet exist.
+There is no other restriction on the replaced and replacement objects.
+Merge commits can be replaced by non-merge commits and vice versa.
+
Replacement references will be used by default by all Git commands
except those doing reachability traversal (prune, pack transfer and
fsck).
@@ -49,18 +55,34 @@ achieve the same effect as the `--no-replace-objects` option.
OPTIONS
-------
-f::
+--force::
If an existing replace ref for the same object exists, it will
be overwritten (instead of failing).
-d::
+--delete::
Delete existing replace refs for the given objects.
-l <pattern>::
+--list <pattern>::
List replace refs for objects that match the given pattern (or
all if no pattern is given).
Typing "git replace" without arguments, also lists all replace
refs.
+CREATING REPLACEMENT OBJECTS
+----------------------------
+
+linkgit:git-filter-branch[1], linkgit:git-hash-object[1] and
+linkgit:git-rebase[1], among other git commands, can be used to create
+replacement objects from existing objects.
+
+If you want to replace many blobs, trees or commits that are part of a
+string of commits, you may just want to create a replacement string of
+commits and then only replace the commit at the tip of the target
+string of commits with the commit at the tip of the replacement string
+of commits.
+
BUGS
----
Comparing blobs or trees that have been replaced with those that
@@ -69,12 +91,13 @@ go back to a replaced commit will move the branch to the replacement
commit instead of the replaced commit.
There may be other problems when using 'git rev-list' related to
-pending objects. And of course things may break if an object of one
-type is replaced by an object of another type (for example a blob
-replaced by a commit).
+pending objects.
SEE ALSO
--------
+linkgit:git-hash-object[1]
+linkgit:git-filter-branch[1]
+linkgit:git-rebase[1]
linkgit:git-tag[1]
linkgit:git-branch[1]
linkgit:git[1]