Tagbar window doesn't update after switching buffers

[mMontu]

Sometimes Tagbar window doesn't update after switching buffers. After entering this state, it behaves like each buffer is tied to a different instance of Tagbar, so executing :TagbarToggle in different buffers leads to multiple Tagbar windows on the same tab.

As mentioned on issue #153, it is not clear all the details needed to reproduce this problem. This is the procedure to reproduce it:

• Two files in a single tab using vertical split
• With cursor on file A, :TagbarToggle -> (opens Tagbar window)
• Move cursor to file B, :TagbarToggle -> (closes Tagbar window)
• :TagbarToggle -> (opens Tagbar window)
• Move cursor to file A, notice that Tagbar window do not update
• :TagbarToggle -> two Tagbar windows

It only works for some files, though. I didn't detect what is specific to the files that trigger the problem, other than being part of a large project (what causes longer executions of ctags).

[majutsushi]

I'm still not able to reproduce this. This is rather frustrating. Are the files that trigger the bug themselves large? The size of the project shouldn't matter, as Tagbar only generates tags for the current file. Do you have any publicly available example files that I could try? Also, do you have more than one tab open?

[mMontu]

Usually I have more than one tab page open, but I'm able to reproduce the bug on a new Vim instance without opening any tabs. The files are usually larges, but I believed that the problem was the project size, so I haven't focused too much on the files. I've just found an easy way to reproduce the problem:

• create file test/class1.cs with the following 3 lines:

class Class1
{
}

• create file test2/class2.cs with the following 3 lines:

class Class2
{
}

• follow the steps on my previous comment.

The same two files placed in the same folder doesn't triggers the bug.

Please let me know if you are still unable to reproduce the issue, then I can check if it is caused by some setting/plugin on my setup.

[majutsushi]

Still no go ... what version of Vim are you using? Maybe it is a Vim bug that got fixed recently.

[mMontu]

I'm using the version 7.3, downloaded from vim.org:

VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Oct 27 2010 17:59:02)
MS-Windows 32-bit GUI version with OLE support
Included patches: 1-46
Compiled by Bram@KIBAALE
Big version with GUI.

[majutsushi]

Oh, that's a pretty old version. If possible I would suggest downloading the new 7.4 release, not just because of this issue but also in general. If upgrading doesn't fix it I'll give it a try with Windows in a virtual machine.

[mMontu]

I'll update to new version soon, maybe it include the fix. But I found a setting in my .vimrc that is probably causing the problem. It is an autocmd used to change the working directory of current directory, from tip #64, with adaptation to work with fugitive.vim:

augroup pathBufEnter
   au!
   autocmd BufEnter * if expand('%:p') !~ ':\\\\' | lcd %:p:h:gs?\\?/? | endif
augroup END

When I remove it the issue disappears.

Maybe tagbar is relying the path being unchanged, but I didn't investigate this further.

[majutsushi]

Even with that autocommand it's working fine for me, even with a minimal configuration. Have you tried a current Vim version to see if that fixes it for you?

[mMontu]

The new version of Vim indeed solves the problem.

Thank you very much!

[majutsushi]

Great, thanks for checking! Good to know that I wasn't just doing something wrong ...