Hi Gábor, On Tue, 3 May 2016, SZEDER Gábor wrote: > Quoting SZEDER Gábor <szeder@xxxxxxxxxx>: > > >Quoting Johannes Schindelin <Johannes.Schindelin@xxxxxx>: > > > > >Hi Gábor, > > > > > >On Sun, 1 May 2016, SZEDER Gábor wrote: > > > > > > >diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh > > > >index 38321d19efbe..454d896390c0 100755 > > > >--- a/t/t5510-fetch.sh > > > >+++ b/t/t5510-fetch.sh > > > >@@ -682,6 +682,7 @@ test_expect_success 'fetching with auto-gc does > > > >not lock up' ' > > > > ( > > > > cd auto-gc && > > > > git config gc.autoPackLimit 1 && > > > >+ git config gc.autoDetach false && > > > > GIT_ASK_YESNO="$D/askyesno" git fetch >fetch.out 2>&1 && > > > > ! grep "Should I try again" fetch.out > > > > ) > > > > > >Sounds good to me. > > > >There is something still bothering me, though. > > > >I take this was a Windows-specific issue; deleting open files on Linux is > >no brainer. According to a comment on the original Git for Windows issue > >at github[1], 'git gc' runs in the background by default on Windows as well. > > Ok, having slept on it, it was a false alarm. > > Though 'git gc --auto' claims "Auto packing the repository in background for > optimum performance." on Windows, it does in fact runs in the foreground. Thanks for checking. I ran out of time yesterday. > 'git gc --auto' first prints that message, unless gc.autoDetach is disabled, > and then calls daemonize() to go to the background. However, daemonize() is > basically a no-op on Windows, thus 'git gc' will remain in the foreground and > the sequence I described below is impossible. Good. Oh, right. I think this will take a lot of energy to fix: daemonize()'s functionality is not really available, indeed. What *is* available is a spawn() that detaches the new process. > Perhaps it would be worth updating 'git gc' to not lie about going to the > background when we can already know in advance that it won't. Hmm. https://github.com/git/git/blob/master/builtin/gc.c#L372-L373 already looks correct (should it really know that we cannot daemonize()? What about other code paths using that function?): if (detach_auto) fprintf(stderr, _("Auto packing the repository in background for optimum performance.\n")); else fprintf(stderr, _("Auto packing the repository for optimum performance.\n")); Ciao, Dscho