From b48e2390cbfad9a46e2c78c7214713fc3b3290ab Mon Sep 17 00:00:00 2001
From: Tobias Witt <tobias.witt@hhu.de>
Date: Thu, 19 Nov 2015 11:03:54 +0100
Subject: [PATCH] Add `pathshorten` as a built-in format for long branch names

---
 autoload/airline/extensions/branch.vim | 4 ++++
 doc/airline.txt                        | 6 +++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/autoload/airline/extensions/branch.vim b/autoload/airline/extensions/branch.vim
index 7ad4650..01e2320 100644
--- a/autoload/airline/extensions/branch.vim
+++ b/autoload/airline/extensions/branch.vim
@@ -14,6 +14,10 @@ if s:head_format == 1
   function! s:format_name(name)
     return fnamemodify(a:name, ':t')
   endfunction
+elseif s:head_format == 2
+  function! s:format_name(name)
+    return pathshorten(a:name)
+  endfunction
 elseif type(s:head_format) == type('')
   function! s:format_name(name)
     return call(s:head_format, [a:name])
diff --git a/doc/airline.txt b/doc/airline.txt
index 9b5f00f..7911a69 100644
--- a/doc/airline.txt
+++ b/doc/airline.txt
@@ -320,9 +320,13 @@ vcscommand   <http://www.vim.org/scripts/script.php?script_id=90>
   " default value leaves the name unmodifed
   let g:airline#extensions#branch#format = 0
 
-  " to only show the tail, e.g. a branch 'feature/foo' show 'foo'
+  " to only show the tail, e.g. a branch 'feature/foo' becomes 'foo', use
   let g:airline#extensions#branch#format = 1
 
+  " to truncate all path sections but the last one, e.g. a branch
+  " 'foo/bar/baz' becomes 'f/b/baz', use
+  let g:airline#extensions#branch#format = 2
+
   " if a string is provided, it should be the name of a function that
   " takes a string and returns the desired value
   let g:airline#extensions#branch#format = 'CustomBranchName'