No matching autocommands for acwrite buffer (multiple files saving)

[lazywei]

Hi,

I got this when enabling multiple files features. After I open a multiple files gist and edit both files, I got error when saving (or updating it):

E676: No matching autocommands for acwrite buffer 

However, the :Gist -b command is still working, and I can use it to update the Gist.

[mattn]

Could you please let me known how to produce it.

[lazywei]

1. Create a gist that contains two files
2. In Vim (actually, I'm using NeoVim), :Gist -l to list gists
3. Select the gist just created, which will result in two split windows contain each file respectively.
4. Move the cursor into one of the split windows
5. :w gives the error