From 723987eca9fde4e69548e2cdfd7f9299138ed02d Mon Sep 17 00:00:00 2001
From: Mo Hyun <mhyun@ver.com>
Date: Mon, 23 Jul 2018 13:05:34 -0700
Subject: [PATCH 1/2] Add vim-grepper extension

- Displays a segment when a grepper search is running
---
 autoload/airline/extensions.vim         |  5 +++++
 autoload/airline/extensions/grepper.vim | 19 +++++++++++++++++++
 autoload/airline/init.vim               |  3 ++-
 doc/airline.txt                         |  6 ++++++
 4 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 autoload/airline/extensions/grepper.vim

diff --git a/autoload/airline/extensions.vim b/autoload/airline/extensions.vim
index cb94604f..34ad3018 100644
--- a/autoload/airline/extensions.vim
+++ b/autoload/airline/extensions.vim
@@ -309,6 +309,11 @@ function! airline#extensions#load()
     call add(loaded_ext, 'gutentags')
   endif
 
+  if (get(g:, 'airline#extensions#grepper#enabled', 1) && get(g:, 'loaded_grepper', 0))
+    call airline#extensions#grepper#init(s:ext)
+    call add(loaded_ext, 'grepper')
+  endif
+
   if (get(g:, 'airline#extensions#xkblayout#enabled', 1) && exists('g:XkbSwitchLib'))
     call airline#extensions#xkblayout#init(s:ext)
     call add(loaded_ext, 'xkblayout')
diff --git a/autoload/airline/extensions/grepper.vim b/autoload/airline/extensions/grepper.vim
new file mode 100644
index 00000000..3e5debf3
--- /dev/null
+++ b/autoload/airline/extensions/grepper.vim
@@ -0,0 +1,19 @@
+" MIT License. Copyright (c) 2014-2018 Mathias Andersson et al.
+" vim: et ts=2 sts=2 sw=2
+
+" Heavily derived from the Gutentags extension
+
+scriptencoding utf-8
+
+if !get(g:, 'loaded_grepper', 0)
+  finish
+endif
+
+function! airline#extensions#grepper#status()
+  let msg = grepper#statusline()
+  return empty(msg) ? '' : 'grepper'
+endfunction
+
+function! airline#extensions#grepper#init(ext)
+  call airline#parts#define_function('grepper', 'airline#extensions#grepper#status')
+endfunction
diff --git a/autoload/airline/init.vim b/autoload/airline/init.vim
index 73b7f558..faa4c299 100644
--- a/autoload/airline/init.vim
+++ b/autoload/airline/init.vim
@@ -151,6 +151,7 @@ function! airline#init#bootstrap()
         \ 'neomake_warning_count', 'ale_error_count', 'ale_warning_count'])
   call airline#parts#define_text('capslock', '')
   call airline#parts#define_text('gutentags', '')
+  call airline#parts#define_text('grepper', '')
   call airline#parts#define_text('xkblayout', '')
   call airline#parts#define_text('keymap', '')
 
@@ -180,7 +181,7 @@ function! airline#init#sections()
     let g:airline_section_gutter = airline#section#create(['%='])
   endif
   if !exists('g:airline_section_x')
-    let g:airline_section_x = airline#section#create_right(['tagbar', 'gutentags', 'filetype'])
+    let g:airline_section_x = airline#section#create_right(['tagbar', 'gutentags', 'grepper', 'filetype'])
   endif
   if !exists('g:airline_section_y')
     let g:airline_section_y = airline#section#create_right(['ffenc'])
diff --git a/doc/airline.txt b/doc/airline.txt
index 0cdd7070..d01be986 100644
--- a/doc/airline.txt
+++ b/doc/airline.txt
@@ -1002,6 +1002,12 @@ vim-gutentags <https://github.com/ludovicchabant/vim-gutentags>
 * enable/disable vim-gutentags integration >
   let g:airline#extensions#gutentags#enabled = 1
 
+-------------------------------------                     *airline-grepper*
+vim-grepper <https://github.com/mhinz/vim-grepper>
+
+* enable/disable vim-grepper integration >
+  let g:airline#extensions#grepper#enabled = 1
+
 -------------------------------------                     *airline-capslock*
 vim-capslock <https://github.com/tpope/vim-capslock>
 

From 60eb44c94e539e86fdcd44e3814521de3b370092 Mon Sep 17 00:00:00 2001
From: Mo Hyun <mhyun@ver.com>
Date: Mon, 23 Jul 2018 14:27:59 -0700
Subject: [PATCH 2/2] Fix build error

---
 t/init.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/init.vim b/t/init.vim
index b75d1851..64b7c6ce 100644
--- a/t/init.vim
+++ b/t/init.vim
@@ -34,7 +34,7 @@ describe 'init sections'
   end
 
   it 'section x should be filetype'
-    Expect g:airline_section_x == '%{airline#util#prepend("",0)}%{airline#util#wrap(airline#parts#filetype(),0)}'
+    Expect g:airline_section_x == '%{airline#util#prepend("",0)}%{airline#util#prepend("",0)}%{airline#util#wrap(airline#parts#filetype(),0)}'
   end
 
   it 'section y should be fenc and ff'