From dcb71960975e388d6cce8f1b6d0ca4f3bbf06829 Mon Sep 17 00:00:00 2001
From: bootleq <bootleq@gmail.com>
Date: Sat, 3 Aug 2013 09:17:53 +0800
Subject: [PATCH 1/3] Add padding spaces for section in s:get_section.

When section text is non-empty, pad spaces before/after it.
---
 autoload/airline.vim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/autoload/airline.vim b/autoload/airline.vim
index 5f0e653..09e800a 100644
--- a/autoload/airline.vim
+++ b/autoload/airline.vim
@@ -94,7 +94,8 @@ function! s:getwinvar(winnr, key, ...)
 endfunction
 
 function! s:get_section(winnr, key)
-  return s:getwinvar(a:winnr, 'airline_section_'.a:key, g:airline_section_{a:key})
+  let text = s:getwinvar(a:winnr, 'airline_section_'.a:key, g:airline_section_{a:key})
+  return empty(text) ? '' : ' '.text.' '
 endfunction
 
 function! s:get_statusline(winnr, active)

From 5ebb0daf937d0617dbabaa0825ac3a29f17a824b Mon Sep 17 00:00:00 2001
From: bootleq <bootleq@gmail.com>
Date: Sat, 3 Aug 2013 09:42:18 +0800
Subject: [PATCH 2/3] Add prefix/suffix options for s:get_section.

For output format other than default 1 space padding.
Need this to keep original section_c style:

    let sl.=l:status_color.' %<'.s:get_section(a:winnr, 'c').' '
---
 autoload/airline.vim | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/autoload/airline.vim b/autoload/airline.vim
index 09e800a..7e60706 100644
--- a/autoload/airline.vim
+++ b/autoload/airline.vim
@@ -93,9 +93,10 @@ function! s:getwinvar(winnr, key, ...)
   return get(winvals, a:key, (a:0 ? a:1 : ''))
 endfunction
 
-function! s:get_section(winnr, key)
+function! s:get_section(winnr, key, ...)
   let text = s:getwinvar(a:winnr, 'airline_section_'.a:key, g:airline_section_{a:key})
-  return empty(text) ? '' : ' '.text.' '
+  let [prefix, suffix] = [get(a:000, 0, ' '), get(a:000, 1, ' ')]
+  return empty(text) ? '' : prefix.text.suffix
 endfunction
 
 function! s:get_statusline(winnr, active)

From 410792ed48d713f5361aa58960cd9efb0570874d Mon Sep 17 00:00:00 2001
From: bootleq <bootleq@gmail.com>
Date: Sat, 3 Aug 2013 10:00:56 +0800
Subject: [PATCH 3/3] Remove space-padding works outside of get_section.

---
 autoload/airline.vim | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/autoload/airline.vim b/autoload/airline.vim
index 7e60706..a991947 100644
--- a/autoload/airline.vim
+++ b/autoload/airline.vim
@@ -109,15 +109,15 @@ function! s:get_statusline(winnr, active)
 
   let sl = '%{airline#update_highlight()}'
   if a:active || s:getwinvar(a:winnr, 'airline_left_only', 0)
-    let sl.=l:mode_color.' '.s:get_section(a:winnr, 'a').' '
+    let sl.=l:mode_color.s:get_section(a:winnr, 'a')
     let sl.='%{g:airline_detect_paste && &paste ? g:airline_paste_symbol." " : ""}'
     let sl.=l:mode_sep_color
     let sl.=a:active ? g:airline_left_sep : g:airline_left_alt_sep
     let sl.=l:info_color
-    let sl.=' '.s:get_section(a:winnr, 'b').' '
+    let sl.=s:get_section(a:winnr, 'b')
     let sl.=l:info_sep_color
     let sl.=g:airline_left_sep
-    let sl.=l:status_color.' %<'.s:get_section(a:winnr, 'c').' '
+    let sl.=l:status_color.s:get_section(a:winnr, 'c', ' %<')
     let gutter = s:getwinvar(a:winnr, 'airline_section_gutter', get(g:, 'airline_section_gutter', ''))
     let sl.=gutter != ''
           \ ? gutter
@@ -127,15 +127,15 @@ function! s:get_statusline(winnr, active)
   endif
   if !s:getwinvar(a:winnr, 'airline_left_only', 0)
     let sl.='%='
-    let sl.=' '.s:get_section(a:winnr, 'x').' '
+    let sl.=s:get_section(a:winnr, 'x')
     let sl.=l:info_sep_color
     let sl.=a:active ? g:airline_right_sep : g:airline_right_alt_sep
     let sl.=l:info_color
-    let sl.=' '.s:get_section(a:winnr, 'y').' '
+    let sl.=s:get_section(a:winnr, 'y')
     let sl.=l:mode_sep_color
     let sl.=a:active ? g:airline_right_sep : g:airline_right_alt_sep
     let sl.=l:mode_color
-    let sl.=' '.s:get_section(a:winnr, 'z').' '
+    let sl.=s:get_section(a:winnr, 'z')
   endif
   return sl
 endfunction