Thread (18 messages) flat view 18 messages, 2 authors, 2016-06-15

Re: [PATCH] filter-branch: rewrite only refs which were not excluded bythe options

From: Johannes Sixt <hidden>
Date: 2016-06-15 22:43:23

Johannes Schindelin wrote:
So really exclude excluded refs from being rewritten.  This also allows
you to safely call

        git filter-branch <some-filter> --all <rev-list options>

to rewrite _all_ branches and tags.
BTW, '--all' in the argument list of filter-branch works only if it is
preceded by '--':

	git filter-branch <some-filter> -- --all <rev-list options>
quoted hunk ↗ jump to hunk
@@ -181,6 +181,7 @@ export GIT_DIR GIT_WORK_TREE=.

 # These refs should be updated if their heads were rewritten

+negatives="$(git rev-parse --revs-only "$@" | grep "^\^")"
 git rev-parse --revs-only --symbolic "$@" |
 while read ref
 do
@@ -196,7 +197,13 @@ do
                        grep "refs/\(tags\|heads\)/$ref$")"
        esac

-       git check-ref-format "$ref" && echo "$ref"
+       # make sure we have a valid ref
+       git check-ref-format "$ref" || continue
+
+       # if the ref has been excluded by the other options, skip it
+       test -z "$(git rev-list -1 "$ref" $negatives)" && continue
Does this catch my use-case with --since? I think not, because:

$ git rev-parse --revs-only --since=2007.01.01 master topic
--max-age=1167606000
257061f3323dc0162f731d934f0870e919211fdf
3405729b94a654df8afbb9a1e13a4cf49a1c351c

There are no negatives. Does it help to filter the non-positives?

negatives=$(git rev-parse --revs-only "$@" | egrep -v '^[0-9a-f]{40}$')

(Except the the '{40}' part is not portable. Hmpf.)

-- Hannes
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