Solution: Use the current one from ctrlspace 5.0 + minor style fixes
Problem: CtrlSpace 5.0 does no longer work with airline
Solution: Modify the ctrlspace extension to call the new APIs
The statusline work fine but the custom ctrlspace function
somehow/somewhere gets overridden and I could not figure out where.
Therefore the user must add
let g:CtrlSpaceStatuslineFunction = "airline#extensions#ctrlspace#statusline()"
to its .vimrc.
Problem: Ctrlspace 5.0 does not integrate well into tabline
Solution: Write a tabline extensions for ctrlspace 5.0.
The extensions is capable of showing both tabs and buffers, but only the
buffers of a current tab are shown.
This commit resolves compatibility issue with fugitive plugin. When
using "Gdiff" command on some file, fugitive attempts to open the
current and the index version of the file. For example, if the file is
/home/taketwo/path/to/the/project/README.md
then fugitive will use the following path to open the index version:
fugitive:///home/taketwo/path/to/the/project/.git//0/README.md
Opening this file leads to a cascade of errors like this:
Error detected while processing function
airline#extensions#tabline#get..<SNR>162_get_buffers..<SNR>162_get_visible_buffers..airline#extensions#tabline#get_buffer_name..airline#extensions#tabline#unique_tail_improved#format:
line 20:
E713: Cannot use empty key for Dictionary
The problem is that when a filename like this is being tokenized, there
appear empty "" tokens, and an error occurs when using them as keys in
`path_tokens[token_index]` dictionary. This fix simply skips empty
tokens.
