Fix displaying git branch

autoload/justmyrc.vim

@@ -1,5 +1,7 @@
 " === Пользовательские функции ===
 "Функция получения текущего режима редактора
+let g:git_branch = ""
+
 function justmyrc#GetMode()
     let l:editor_mode = mode()
 
@@ -38,10 +40,9 @@ function justmyrc#GetMode()
     endif
 endfunction
 
-function justmyrc#GetBranchName()
-    let l:status = trim(system("git rev-parse --abbrev-ref HEAD 2> /dev/null | tr -d '\r\n'"))
-
-    return l:status
+function justmyrc#GetBranchName(filename)
+    let l:cur_dir = fnamemodify(system("readlink -f " . a:filename), ":h")
+    let g:git_branch = trim(system("git -C " . l:cur_dir . " rev-parse --abbrev-ref HEAD 2> /dev/null | tr -d '\r\n'"))
 endfunction
 
 function justmyrc#TabLine()

vimrc

@@ -34,7 +34,7 @@ set statusline+=%#StatusLineEmpty#%=
 set statusline+=%#StatusLineReadOnlyFlag#\ %r
 set statusline+=%#StatusLineEncoding#\ %{&fileencoding?&fileencoding:&encoding}\ 
 set statusline+=%#StatusLineRuler#\ %v:%l\ (%p%%)\ 
-set statusline+=%#StatusLineBranchName#\ %{justmyrc#GetBranchName()}\ 
+set statusline+=%#StatusLineBranchName#\ %{g:git_branch}\ 
 
 "Выключает перенос строк
 set nowrap
@@ -69,10 +69,18 @@ set guioptions-=r
 imap jk <ESC>
 
 "Автонастройка для определенных типов файлов
+augroup GitBranch
+    autocmd!
+    autocmd BufEnter,ShellCmdPost,FileChangedShellPost * call justmyrc#GetBranchName(expand("%"))
+    autocmd BufLeave * let g:git_branch = ""
+augroup END
+
+augroup Python
     autocmd BufEnter *.py set colorcolumn=80
     autocmd BufLeave *.py set colorcolumn=0
 
     autocmd BufEnter *.py compiler pycodestyle
+augroup END
 
 autocmd BufEnter *.md set wrap
 autocmd BufEnter *.md set colorcolumn=80