make it possible to declare sections in the vimrc (#204).

autoload/airline/init.vim

@@ -7,11 +7,7 @@ function! s:check_defined(variable, default)
   endif
 endfunction
 
-let s:init_vars = 0
-function airline#init#vars()
-  if s:init_vars | return | endif
-  let s:init_vars = 1
-
+function! airline#init#bootstrap()
   call s:check_defined('g:airline_left_sep', get(g:, 'airline_powerline_fonts', 0)?"":">")
   call s:check_defined('g:airline_left_alt_sep', get(g:, 'airline_powerline_fonts', 0)?"":">")
   call s:check_defined('g:airline_right_sep', get(g:, 'airline_powerline_fonts', 0)?"":"<")
@@ -55,12 +51,11 @@ function airline#init#vars()
         \ 'linenr': get(g:, 'airline_linecolumn_prefix', get(g:, 'airline_powerline_fonts', 0) ? '' : ':' ),
         \ 'branch': get(g:, 'airline_branch_prefix', get(g:, 'airline_powerline_fonts', 0) ? '' : ''),
         \ }, 'keep')
+
+  call airline#extensions#load()
 endfunction
 
-function! airline#init#bootstrap()
-  call airline#init#vars()
-  call airline#extensions#load()
-
+function! airline#init#sections()
   if !exists('g:airline_section_a')
     let g:airline_section_a = airline#section#create_left(['mode', 'paste', 'iminsert'])
   endif

autoload/airline/section.vim

@@ -1,6 +1,8 @@
 " MIT License. Copyright (c) 2013 Bailey Ling.
 " vim: et ts=2 sts=2 sw=2
 
+call airline#init#bootstrap()
+
 function! s:get_val(key, append)
   let part = airline#parts#get(a:key)
 

autoload/airline/util.vim

@@ -1,7 +1,7 @@
 " MIT License. Copyright (c) 2013 Bailey Ling.
 " vim: et ts=2 sts=2 sw=2
 
-call airline#init#vars()
+call airline#init#bootstrap()
 
 function! airline#util#wrap(text, minwidth)
   if a:minwidth > 0 && winwidth(0) < a:minwidth

plugin/airline.vim

@@ -15,6 +15,7 @@ function! s:init()
     let s:airline_initialized = 1
 
     call airline#init#bootstrap()
+    call airline#init#sections()
 
     let s:airline_theme_defined = exists('g:airline_theme')
     if s:airline_theme_defined || !airline#switch_matching_theme()
@@ -69,7 +70,7 @@ function! s:airline_toggle()
       autocmd CmdwinLeave * call airline#remove_statusline_func('airline#cmdwinenter')
 
       autocmd ColorScheme * call <sid>on_colorscheme_changed()
-      autocmd WinEnter,BufWinEnter,FileType,BufUnload,ShellCmdPost,VimResized *
+      autocmd VimEnter,WinEnter,BufWinEnter,FileType,BufUnload,VimResized *
             \ call <sid>on_window_changed()
 
       autocmd BufWritePost */autoload/airline/themes/*.vim

t/airline.vim

@@ -1,4 +1,5 @@
 call airline#init#bootstrap()
+call airline#init#sections()
 
 function! MyFuncref(...)
   call a:1.add_raw('hello world')

t/commands.vim

@@ -1,4 +1,6 @@
 call airline#init#bootstrap()
+call airline#init#sections()
+
 source plugin/airline.vim
 
 describe 'commands'

t/extensions_default.vim

@@ -1,4 +1,5 @@
 call airline#init#bootstrap()
+call airline#init#sections()
 
 describe 'default'
   before

t/init.vim

@@ -10,6 +10,7 @@ describe 'init'
   before
     call s:clear()
     call airline#init#bootstrap()
+    call airline#init#sections()
   end
 
   after

t/section.vim

@@ -33,5 +33,10 @@ describe 'section'
     let s = airline#section#create(['hi'])
     Expect s == '%#hlgroup#hello'
   end
+
+  it 'should parse out a section from the vimrc'
+    let s = airline#section#create(['whitespace'])
+    Expect s =~ 'airline#extensions#whitespace#check'
+  end
 end