Documentation: git-prune

Not replacing but always including our own refs may be more desirable (and unarguably much safer), but at the same time I have a suspicion that that might be forbidding a useful usage I haven't thought of, so... Signed-off-by: N Junio C Hamano <junkio@cox.net>

Documentation: git-prune
Not replacing but always including our own refs may be more desirable (and unarguably much safer), but at the same time I have a suspicion that that might be forbidding a useful usage I haven't thought of, so... Signed-off-by: N Junio C Hamano <junkio@cox.net>
c82365dc · Junio C Hamano · 8c667f4b · c82365dc
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Documentation/git-prune.txt Documentation/git-prune.txt +29 -1

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--- a/Documentation/git-prune.txt
+++ b/Documentation/git-prune.txt
@@ -8,7 +8,7 @@ git-prune - Prunes all unreachable objects from the object database

 SYNOPSIS
 --------
-'git-prune' [-n]
+'git-prune' [-n] [--] [<head>...]

 DESCRIPTION
 -----------
@@ -27,6 +27,34 @@ OPTIONS
 	Do not remove anything; just report what it would
 	remove.

+--::
+	Do not interpret any more arguments as options.
+
+<head>...::
+	Instead of keeping objects
+	reachable from any of our references, keep objects
+	reachable from only listed <head>s.
+
+Note that the explicitly named <head>s are *not* appended to the
+default set of references, but they replace them.  In general you
+would want to say `git prune $(git-rev-parse --all) extra1
+extra2` to keep chains of commits leading to extra1, extra2,
+... in addition to what are reachable from your own refs.
+Saying `git prune extra1 extra2` would *lose* objects reachable
+only from the usual refs, which is usually not what you want.
+
+
+EXAMPLE
+-------
+
+To prune objects not used by your repository and another that
+borrows from your repository via its
+`.git/objects/info/alternates`:
+
+------------
+$ git prune $(git-rev-parse --all) \
+  $(cd ../another && $(git-rev-parse --all))
+------------

 Author
 ------