li...@haller-berlin.de (Stefan Haller) writes: > Thanks, this is interesting; I'm having trouble understanding the tests > though. Some of them use rebase -p -i, but I don't understand why they > use -i, or why that even works in a test (i.e. why it doesn't open an > editor).
Upon starting up, tests dot-source t/test-lib.sh file and it unsets most of GIT_* environment variables to obtain a stable testing environment that is not affected by things that testers may have in their environment. There is EDITOR=: in t/test-lib.sh, which was added in 2006 before GIT_EDITOR was invented. That is the one in effect for git subcommands that usually interacts with editors during the test, unless specific tests further override it with test_set_editor helper.
