Il giorno dom, 04/10/2009 alle 11.27 +0200, Johan Herland ha scritto: > On Sunday 04 October 2009, Octavian Râşniţă wrote: > > Are the following commands specifying the same reference? > > > > prompt> git log -1 HEAD^^^ ... log entry ... > > prompt> git log -1 HEAD^~2 ... log entry ... > > prompt> git log -1 HEAD~1^^ ... log entry ... > > prompt> git log -1 HEAD~3 ... log entry ... > > Yes the ~ is used to select the first parent of a commit and their grand-parents HEAD~ means the parent of the current head HEAD~2 means the grand-parent HEAD~3 the grand-grand-parent.. the ^ is used to select a direct parent of a commit HEAD^ is the same as HEAD~ HEAD^^ is the same as HEAD~2 (parent of the parent) HEAD^2 is NOT the same of HEAD~2, it means the "second parent" of HEAD: this make sense only if HEAD has at least two parents (because it is a merge commit) if it hasn't you'll get: fatal: ambiguous argument 'HEAD^2': unknown revision or path not in the working tree. Use '--' to separate paths from revisions you can read the same here: http://progit.org/book/ch6-1.html regards, Daniele -- 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