Veja :h :ls
:
:ls[!] [flags]
Show all buffers. Example:
1 #h "/test/text" line 1
2u "asdf" line 0
3 %a + "version.c" line 1
[...]
Indicators (chars in the same column are mutually exclusive):
u an unlisted buffer (only displayed when [!] is used)
unlisted-buffer
% the buffer in the current window
# the alternate buffer for ":e #" and CTRL-^
a an active buffer: it is loaded and visible
h a hidden buffer: It is loaded, but currently not
displayed in a window hidden-buffer
- a buffer with 'modifiable' off
= a readonly buffer
R a terminal buffer with a running job
F a terminal buffer with a finished job
? a terminal buffer without a job: ':terminal NONE'
+ a modified buffer
x a buffer with read errors
Portanto, %a +
indica que esse buffer é:
- o buffer na janela ativa
- um buffer ativo
- um buffer modificado