# meaning of HEAD in context of filter-branch 3 messages from 2009-10-11 to 2009-10-12. Participants: bill lam, Andreas Schwab. Thread: https://gitlist.dev/t/21186 ## bill lam, 2009-10-11 02:43 Subject: meaning of HEAD in context of filter-branch Message-ID: <20091011024357.GA9021@debian.b2j> URL: https://gitlist.dev/e/20091011024357.GA9021%40debian.b2j ``` I tried to process some files that changed between each commit using the command git filter-branch --tree-filter 'git diff --name-only HEAD^.. | foo however it seems that HEAD is fixed to mean the HEAD of the current tip before starting git-filter-branch, by trying like this $ git rev-list -1 HEAD^ 2bf95faed2d51c338ea6fa93e7bb6cc9c1bc759b git filter-branch --tree-filter 'git rev-list -1 HEAD^ >>/tmp/sha' -- --all $ cat /tmp/sha 2bf95faed2d51c338ea6fa93e7bb6cc9c1bc759b 2bf95faed2d51c338ea6fa93e7bb6cc9c1bc759b 2bf95faed2d51c338ea6fa93e7bb6cc9c1bc759b 2bf95faed2d51c338ea6fa93e7bb6cc9c1bc759b how to get the HEAD during filter-branch or other workaround? -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 ``` ## Andreas Schwab, 2009-10-11 09:38 Subject: Re: meaning of HEAD in context of filter-branch Message-ID: URL: https://gitlist.dev/e/m27hv2s22f.fsf%40igel.home In-Reply-To: <20091011024357.GA9021@debian.b2j> ``` bill lam writes: > how to get the HEAD during filter-branch or other workaround? >From git-filter-index(1): Filters The filters are applied in the order as listed below. The argument is always evaluated in the shell context using the eval command (with the notable exception of the commit filter, for technical reasons). Prior to that, the $GIT_COMMIT environment variable will be ^^^^^^^^^^^ set to contain the id of the commit being rewritten. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." ``` ## bill lam, 2009-10-12 10:41 Subject: Re: meaning of HEAD in context of filter-branch Message-ID: <20091012104139.GB3937@debian.b2j> URL: https://gitlist.dev/e/20091012104139.GB3937%40debian.b2j In-Reply-To: ``` On Sun, 11 Oct 2009, Andreas Schwab wrote: > reasons). Prior to that, the $GIT_COMMIT environment variable will be > ^^^^^^^^^^^ Thanks. This is what I should use. -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 ```