From 8c4bf37588fb52f0aa3237d491d81f74061140c1 Mon Sep 17 00:00:00 2001
From: Cimbali <me@cimba.li>
Date: Wed, 22 Nov 2017 22:41:00 +0100
Subject: [PATCH] Configurability: parametrizable sha1 length

---
 autoload/airline/extensions/branch.vim | 5 +++--
 doc/airline.txt                        | 3 +++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/autoload/airline/extensions/branch.vim b/autoload/airline/extensions/branch.vim
index 7e9625bd..c46c3c51 100644
--- a/autoload/airline/extensions/branch.vim
+++ b/autoload/airline/extensions/branch.vim
@@ -84,6 +84,7 @@ endif
 
 " Fugitive special revisions. call '0' "staging" ?
 let s:names = {'0': 'index', '1': 'ancestor', '2':'target', '3':'merged'}
+let s:sha1size = get(g:, 'airline#extensions#branch#sha1_len', 7)
 
 function! s:update_git_branch()
   if !s:has_fugitive
@@ -91,7 +92,7 @@ function! s:update_git_branch()
     return
   endif
 
-  let name = fugitive#head(7)
+  let name = fugitive#head(s:sha1size)
 
   try
     let commit = fugitive#buffer().commit()
@@ -103,7 +104,7 @@ function! s:update_git_branch()
       if ref !~ "^fatal: no tag exactly matches"
         let name = s:format_name(substitute(ref, '\v\C^%(heads/|remotes/|tags/)=','',''))."(".name.")"
       else
-        let name = commit[:6]."(".name.")"
+        let name = commit[0:s:sha1size-1]."(".name.")"
       endif
     endif
   catch
diff --git a/doc/airline.txt b/doc/airline.txt
index 051b5d2f..c9c65785 100644
--- a/doc/airline.txt
+++ b/doc/airline.txt
@@ -453,6 +453,9 @@ notexists symbol will be displayed after the branch name.
     return '[' . a:name . ']'
   endfunction
 <
+* truncate sha1 commits at this number of characters  >
+  let g:airline#extensions#branch#sha1_len = 10
+<
 -------------------------------------                    *airline-syntastic*
 syntastic <https://github.com/vim-syntastic/syntastic>