looks like this:
```
let a=(condition ? s:var:'')
```
confuses older Vims and it complains about a missing colon. So make
parsing a bit easier and add a space in front of the second colon.
fixes#1629
commit ab49a1c7ae changed that no leading whitespace was added.
While this removed a double space in front of the current active
selected buffer, it removed one space too much for the non-current
buffers in the bufferline.
So partly reverse it and only add the space, if the highlighting groups
between each item did not change.
previously, when both tabs and buffers were displayed in the tabline, it
was not immediately obvious which side belongs to a buffer and which one
to a tab. Therefore, add [buffers]/[tabs] labels consistently.
under certains circumstances it could happen that for the vim-ctrlspace
tabline extension a tabline group was redefined which would cause a
separator having foreground and background color swapped. This was
caused by using the 'pos' parameter for the right side wrongly.
fixes#1559
rather let them be defined whenever they are needed. They were only used
inside a single function anyhow, so it does not make sense to cache
them. In addition, having the user later change the variable won't work
as expected.
The initial reason in #237 is not valid anymore, as vim-gitgutter
functions as expected for editing files that are not part of a repo,
whether they are:
- in a different repo
- in a parent repo (cwd being a submodule)
- outside of the repo
Furthermore, removing this check allows to show relevant info for
specific fugitive file names that are fugitive://..../sha1//...
which are hard to parse manually, especially in complicated situations
such as submodules.
The function shows the line number of the first error/warning that appears in the current buffer. If there are 20 warnings and the first warning exists on line 33, then vim-airline would show "W:20(L33)".
One can change how the line number is represented using: `g:airline#extensions#ale#open_lnum_symbol` and `airline#extensions#ale#close_lnum_symbol`
commit 7d082c03b2 added a workaround to skip
a few redraws on startup so that the intro message is not shown anymore.
However might cause problems, that some highlighting groups are not
correctly set. Also recent Vims (8.0.1290 and so on) do not seem to
suffer from the problem that an too early initializiation of airline
causes a redraw which skips the intro message.
Therefore, revert that commit.
Fixes#1585
