vim hangs after fugitive command launched about vim-fugitive

[tpope]

My first step would be to look for any hanging git processes in ps aux.

A similar issue was determined to be caused by a buggy MacVim release, but this is the first I've heard of for Debian. I've regularly used it on Debian with Git 1.7 so something more nuanced is at play.

[0]

Just to confirm, I'm happily using the latest vim-fugitive (762bfa7) with exactly Git 1.7.4.1 and Vim 7.3 (though not on Debian), so it's not just the versions.

[scyrma]

I've got a backtrace, that is available on https://gist.github.com/871677 ... strace was started just before launching ":Gstatus"

The last two lines keep repeating until I kill the program.

wait4(26037, 0x7fff72d7799c, WNOHANG, NULL) = 0
nanosleep({0, 10000000}, NULL) = 0

I see no call to git in ps. Maybe I'm not quick enough to catch it...?

[0]

What happens if you do either
:pedit! /home/mathieu/src/vim-fugitive/.git/index
or even just
:edit /home/mathieu/src/vim-fugitive/.git/index
?

[scyrma]

Good guess. Same thing : everything blocks. The file opens up fine if vim-fugitive is not active (vim --noplugin ...), but it hangs if it is active.

Some kind of race condition locking issue related to the index..?

[0]

I seem to have narrowed it down to line 1635:
call s:ReplaceCmd(s:repo().git_command('status'),index)
Specifically, the call to ReplaceCmd, which actually calls the given command.

I haven't the time to investigate further at the moment, but perhaps you could try substituting 'ls' in place of the git-status bit, as in:
call s:ReplaceCmd('ls',index)
and seeing if that changes anything.

[scyrma]

Tried it as-is, then played with different versions of this (but my knowledge of vim scripting is pretty small), to no avail.

[0]

If you take line 1599:
silent exe '!'.escape(prefix.a:cmd,'%#').' > '.tmp
and replace the silent exe with echo, it should output the command it's trying to run when it locks up instead of running it. I would expect to see something along the lines of:
!git --git-dir=/home/mathieu/src/vim-fugitive/.git status > /tmp/vve8lfz/0

Perhaps you could play around with variations of that with and without vim-fugitive present, unless you see something different.

[scyrma]

Thanks 0, sorry for the trouble. It turns out the problem was that the "alternative" for vim was set to vim.gtk (even though I wasn't using that "flavor" of vim) instead of vim.basic. The "!..." command does not seem to work in vim.gtk.

Everything works fine now, cheers!

[edit: for those curious, the bug I was having seems to be http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=612998]

[tpope]

Nice detective work!