Use custom git branch name for vim-airline

Airline relies on fugitive to get the branch name, but fugitive is
conditionally loaded. So the branch name is not shown. We need to
provide our own function to get the branch name.

1 files changed, 9 insertions, 0 deletions

diff --git a/autoload/utils.vim b/autoload/utils.vim
index 900069c..5bbc7e8 100644
--- a/autoload/utils.vim
+++ b/autoload/utils.vim
@@ -159,3 +159,12 @@ function! utils#Inside_git_repo() abort
     return v:true
   endif
 endfunction
+
+function! utils#GetGitBranch()
+  let l:res = systemlist('git rev-parse --abbrev-ref HEAD')[0]
+  if match(l:res, 'fatal') != -1
+    return ''
+  else
+    return l:res
+  endif
+endfunction