From 1fb184305bbd0da45fb87f8a690ac29599ce1a15 Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Mon, 25 Mar 2019 12:34:09 +0100
Subject: [PATCH] fugitiveline: simplify modify logic

The 'autochdir' option could be toggled on later in a session.
So do not set the has_autochdir flag once the file is read, but evaluate
it every time the corresponding function is called.

While at it, get rid of the s:fmod variable. Instead let a helper
function return the correct modifier flags depending on the value of the
'autochdir' option.
---
 autoload/airline/extensions/fugitiveline.vim | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/autoload/airline/extensions/fugitiveline.vim b/autoload/airline/extensions/fugitiveline.vim
index 7f39b5c4..1dfbb24d 100644
--- a/autoload/airline/extensions/fugitiveline.vim
+++ b/autoload/airline/extensions/fugitiveline.vim
@@ -7,13 +7,9 @@ if !airline#util#has_fugitive()
   finish
 endif
 
-
-let s:has_autochdir = exists("+autochdir") && &autochdir
-if s:has_autochdir
-  let s:fmod = ':p'
-else
-  let s:fmod = ':.'
-endif
+function! s:ModifierFlags()
+  return (exists("+autochdir") && &autochdir) ? ':p' : ':.'
+endfunction
 
 function! airline#extensions#fugitiveline#bufname()
   if !exists('b:fugitive_name')
@@ -31,15 +27,16 @@ function! airline#extensions#fugitiveline#bufname()
     endtry
   endif
 
+  let fmod = s:ModifierFlags()
   if empty(b:fugitive_name)
-    return fnamemodify(bufname('%'), s:fmod)
+    return fnamemodify(bufname('%'), fmod)
   else
-    return fnamemodify(b:fugitive_name, s:fmod). " [git]"
+    return fnamemodify(b:fugitive_name, fmod). " [git]"
   endif
 endfunction
 
 function! airline#extensions#fugitiveline#init(ext)
-  if s:has_autochdir
+  if exists("+autochdir") && &autochdir
     " if 'acd' is set, vim-airline uses the path section, so we need to redefine this here as well
     call airline#parts#define_raw('path', '%<%{airline#extensions#fugitiveline#bufname()}%m')
   else