rename window_override_funcrefs to statusline_funcrefs

autoload/airline.vim

@@ -117,7 +117,7 @@ function! airline#update_statusline()
   for section in s:sections
     unlet! w:airline_section_{section}
   endfor
-  for Fn in g:airline_window_override_funcrefs
+  for Fn in g:airline_statusline_funcrefs
     call Fn()
   endfor
 

autoload/airline/extensions.vim

@@ -111,7 +111,7 @@ function! airline#extensions#load()
   endif
 
   if get(g:, 'command_t_loaded', 0)
-    call add(g:airline_window_override_funcrefs, function('airline#extensions#commandt#apply_window_override'))
+    call add(g:airline_statusline_funcrefs, function('airline#extensions#commandt#apply_window_override'))
   endif
 
   if g:airline_enable_bufferline && get(g:, 'loaded_bufferline', 0)
@@ -124,8 +124,8 @@ function! airline#extensions#load()
     let g:bufferline_separator = ' '
   endif
 
-  call add(g:airline_window_override_funcrefs, function('airline#extensions#update_external_values'))
-  call add(g:airline_window_override_funcrefs, function('airline#extensions#apply_window_overrides'))
+  call add(g:airline_statusline_funcrefs, function('airline#extensions#update_external_values'))
+  call add(g:airline_statusline_funcrefs, function('airline#extensions#apply_window_overrides'))
   call add(g:airline_exclude_funcrefs, function('airline#extensions#is_excluded_window'))
 
   call airline#extensions#update_external_values()

doc/airline.txt

@@ -169,22 +169,31 @@ with the usual statusline syntax.
   let g:airline_section_c = '%t'
 <
 
-If there is a particular plugin or filetype that is not supported, you can
-extend it by adding a function reference to the global array.  Here is an
-example that you could add to your vimrc:
+==============================================================================
+FUNCREFS                                                  *airline-funcrefs*
+
+vim-airline internally uses funcrefs to integrate with third party plugins,
+and you can tap into this functionality to extend it for you needs.
+
+                                             *g:airline_statusline_funcrefs*
+The g:airline_statusline_funcrefs variable is an array of funcrefs that get
+invoked before the statusline gets overwritten for each window.  The following
+is an example of how you can extend vim-airline to support a new plugin.
 >
   function! MyPlugin()
     if &filetype == 'MyPluginFileType'
       let w:airline_section_a = 'MyPlugin'
       let w:airline_section_b = '%f'
       let w:airline_section_c = '%{MyPlugin#function()}'
+      let g:airline_variable_referenced_in_statusline = 'foo'
     endif
   endfunction
-  call add(g:airline_window_override_funcrefs, function('MyPlugin'))
+  call add(g:airline_statusline_funcrefs, function('MyPlugin'))
 <
-
-In a similar fashion, you can define a function to exclude a window from
-having its statusline modified.
+                                                *g:airline_exclude_funcrefs*
+The g:airline_exclude_funcrefs variable is an array that's returns 1 or 0 to
+determine whether that particular window should be excluded from having its
+statusline modified.  Here is an example:
 >
   function! ExcludeFoo()
     return &filetype == 'FooType'

plugin/airline.vim

@@ -13,6 +13,9 @@ endfunction
 if exists('g:airline_enable_fugitive') || exists('g:airline_fugitive_prefix')
   echom 'The g:airline_enable_fugitive and g:airline_fugitive_prefix variables have been deprecated and renamed to g:airline_enable_branch and g:airline_branch_prefix respectively. Please update your vimrc.'
 endif
+if exists('g:airline_window_override_funcrefs')
+  echom 'The g:airline_window_override_funcrefs variable has been deprecated.  Please use g:airline_statusline_funcrefs instead.'
+endif
 call s:check_defined('g:airline_left_sep', exists('g:airline_powerline_fonts')?"":">")
 call s:check_defined('g:airline_left_alt_sep', exists('g:airline_powerline_fonts')?"":">")
 call s:check_defined('g:airline_right_sep', exists('g:airline_powerline_fonts')?"":"<")
@@ -32,7 +35,7 @@ call s:check_defined('g:airline_theme', 'dark')
 call s:check_defined('g:airline_exclude_filenames', ['DebuggerWatch','DebuggerStack','DebuggerStatus'])
 call s:check_defined('g:airline_exclude_filetypes', [])
 call s:check_defined('g:airline_exclude_preview', 0)
-call s:check_defined('g:airline_window_override_funcrefs', [])
+call s:check_defined('g:airline_statusline_funcrefs', [])
 call s:check_defined('g:airline_exclude_funcrefs', [])
 
 call s:check_defined('g:airline_mode_map', {