When checking the defined foreground color in the function that checks
whether a highlighting group exists, it should follow the syntax group
links and check the final color.
Add a new condition that will contain the new vim9script implementation
of the highlighter logic. Not done yet.
To test it out, you need a recent Vim 8.2 and in addition set the
configuration variable
:let g:airline_experimental=1
Implementation for all the functions will follow.
This is needed for Neovim, because an external UI could be attached to
the same neovim server, so it does not make sense to define highlighting
groups with either only the cterm or the guifg attribute set.
So refactor the code slightly got get rid of this variable (and since
this variable is not needed anymore, we can also get rid of the guienter
and OptionSet autocommand).
fixes: #2261
This is actually a work around for a broken installation. the dict p
should always contain the accents key (see `airline#themes#patch()`
function, that adds missing accents). So even if the theme does not
define the accents key, it should always exist.
However, an error while evaluating the statusline is extremely annoying,
so add some safeguards here and skip the following for loop.
related #2043
Groupnames like 'airline_c1_to_airline_x_inactive' still have to be
processed, so do not skip them.
Also for the tabline, '_inactive' groups are not used, so skip them
Replace by a function that retuns the to be executed highlighting string
Should in theory be a bit faster, since the same function does not have
to be called 5 times per highlighting group.
It probably is not much better, but here are some random numbers:
Profiling:
Previously:
count total (s) self (s)
199 0.022973 0.009909 let cmd = printf('hi %s %s %s %s %s %s %s %s', a:group, s:Get(colors, 0, 'guifg=')…
New:
count total (s) self (s)
79 0.010166 0.000862 let cmd = printf('hi %s%s', a:group, s:GetHiCmd(colors))
Make sure, to also check, if the separator groups have already been
defined. Once they are defined initially, they are usually available in
the palette group. So do not redefine them once they have been created
initially.
references #1779
Previously, we only checked for if the name starts with 'airline_c'
But there could as well be highlighting groups starting being called
'airline_b_to_airline_c5', but if buffer 5 is no longer visible in the
current viewport, then we do not need to recreate those groups.
currently, if the matchstr() evaluates to '', it would skip the required
section, because bnr would be evaluated to zero and since there is no
buffer zero, skip that highlighting group.
Make sure, to only skip the highlighting group if the buffer number is
actually > 0
In a long editing session, there could happen to accumulate several
highlighting groups for buffers that might no longer be visible.
Therefore, only re-create the highlighting group for buffers that are
actually displayed in the current tabpage. If not, skip them.
references #1779
previously, it could happen that the same highlighting group was defined
several times, because it was available in several modes within
g:airline#theme[mode]. So the second one would always win.
Therefore, loop through all modes in reverse order and define the group
and remember what group has already been defined. If we happen to have
to re-define the same group, skip it. Since we are traversing the list
in reverse order, this should make sure the last definition wins.
This has the benefit of being more performant and hopefully helps with
e.g. #1779 and similar issues.
This will make sure that the current window will be highlighted as
expected, even if there are no other windows and all highlighting groups
will be correctly re-created as 'inactive'
references #1807
This enables the highlighting caching only when the variable
g:airline_highlighting_cache is set to 1
Should make airline faster and more performant, because we can save a
lot of expensive C core calls. However, when redefining highlighting
groups, it might not correctly reset the cache.
do not access get() function twice. We can assign the result to a
variable and use it a second time. Should speed up the highligther part
of the code by a bit.
Since I was already touching s:Get(), also get rid of the default
parameter, as it always has been the empty string.
