The filter-branch command, the contents of ~/.gitconfig and the tree are the same. The command succeeds on cygwin, but fails on Solaris due to unset GIT_AUTHOR_NAME and GIT_COMMITTER_NAME : $ git filter-branch --tree-filter "env | grep GIT_ ; $CMD" b416b9bfc5e71531f2f05af4c396bb0ba7560741..HEAD Rewrite 214efc6eec82b015aefe23b2280979f05b351396 (1/16)GIT_DIR=/home/tester/.ilya/builds/makepkg.rap_0.1-1_sparc.XXXXXX/src/rap/.git GIT_INDEX_FILE=/home/tester/.ilya/builds/makepkg.rap_0.1-1_sparc.XXXXXX/src/rap/.git-rewrite/t/../index GIT_WORK_TREE=. GIT_AUTHOR_NAME= GIT_COMMITTER_NAME= GIT_COMMIT=214efc6eec82b015aefe23b2280979f05b351396 fatal: empty ident <my@xxxxxxxxx> not allowed could not write rewritten commit If I explicitly set these 2 variables, filter-branch succeeds, but other commit attributes like commit date aren't preserved. I use git 1.7.6, from sunfreeware. I hope there is some simple thing that needs to be configured. -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html