:Gdiff hangs on Ubuntu 18.04 with vim 8

[gidgid]

I'm using Vim 8, Ubuntu 18.04 and zsh (oh-my-zsh) & vim plug When I open a file with a merge conflict and invoke :Gdiff vim suddenly hangs until I kill it using Ctrl + C

I tried without success:

• :set shell=bash
• removed my global .gitconfig
• removed all plugins besides vim fugitive
• shellcmdflag is only -c
• updated vim fugitive

Any ideas what I may have missed?

[tpope]

Check if there's a child git process running.

[gidgid]

Not sure if there are other ways to check this (I'll be happy to know if there are) but I tried the following and could not see any running git processes:

• ps aux
• ps -A
• using htop
• pstree
• inspected the specific git repository but could not find anything weird there (but I may be missing something) - it also happens on every repository so it's most likely not a specific repository issue

BTW, :Gdiff doesn't seem to work at all (regardless if I'm in a middle of a merge conflict or not)

The same problem also happens on my mac so maybe this is some vim configuration problem?

[tpope]

You can use px auxf to see if Vim has any child processes.

[gidgid]

I'm assuming you meant ps auxf Ran it and didn't see any vim child processes Anything else I should check?

[gidgid]

I kept digging into it and wanted to pour more information and it seems like all the diff capabilities suspend my vim (:Gdiff or :Gdiffsplit)

[tpope]

Does :Gsplit fail the same way? It does essentially the same thing except it doesn't enable diff mode.

[gidgid]

Just checked, :Gsplit works fine. I also tried using just vimdiff without Vim fugitive as a mergetool to resolve the merge conflict and it also works fine, so it seems like the problem is only with the different diff commands

[tpope]

You say this is happening during a merge conflict; does it happen outside of one? Does it happen on both :Gdiffsplit and :Gdiffsplit!?

[gidgid]

All the different diff command seem to not work for some reason. They don't work during a merge conflict or without a merge conflict I also check Gdiffsplit! which doesn't work as well

[ezpuzz]

I have hanging Gdiff on windows + Vim8 and I see continuous process spawning of git in process monitor.

[tpope]

@ezpuzz If there's any way you could figure out the arguments of that git process it could potentially narrow things down.

Other things to test:

• :Gdiffsplit :0:%
• :Gdiffsplit HEAD:%
• :noautocmd Gdiffsplit

[gidgid]

The first 2 commands (:Gdiffsplit :0:% and :Gdiffsplit HEAD:%) make my vim suspend but the last one does work (i.e. no suspend) - anything else I should check?

[tpope]

That strongly suggests to me another plugin or your vimrc has an autocommand that's hanging. Try disabling plugins and see if you can isolate it.

[gidgid]

I'm using vim-plug and removed all the plugins except from fugitive & vim plug. I ran :PlugClean and verified no other plugins are in my vim plug directory :Gdiff keeps suspending though Is there a way to make sure only fugitive is running?

[gidgid]

I cleaned out my entire .vimrc file and just left the plugins and now it works - so its probably something that is massed up with my configuration. I'll do a binary search and try and isolate the problem

[gidgid]

Found it! apparently I had some old code in my .vimrc related to some experiments I did with ctags a while back. Once I removed it, :Gdiff is working again Thanks a lot for your help - it is highly appreciated