fix finding begining of token

closes #428

autoload/emmet/lang/html.vim

@@ -1,6 +1,6 @@
 let s:bx = '{\%("[^"]*"\|''[^'']*''\|\$#\|\${\w\+}\|\$\+\|{[^{]\+\|[^{}]\)\{-}}'
-let s:mx = '\([+>]\|[<^]\+\)\{-}\s*'
-\     .'\((*\)\{-}\s*'
+let s:mx = '\([+>]\|[<^]\+\)\{-}'
+\     .'\((*\)\{-}'
 \       .'\([@#.]\{-}[a-zA-Z_\!][a-zA-Z0-9:_\!\-$]*\|' . s:bx . '\|\[[^\]]\+\]\)'
 \       .'\('
 \         .'\%('
@@ -32,14 +32,15 @@ function! emmet#lang#html#findTokens(str) abort
   endwhile
   let last_pos = pos
   while len(str) > 0
+    let white = matchstr(str, '^\s\+', pos)
+    if white != ''
+      let last_pos = pos + len(white)
+	  let pos = last_pos
+    endif
     let token = matchstr(str, s:mx, pos)
     if token ==# ''
       break
     endif
-    if token =~# '^\s'
-      let token = matchstr(token, '^\s*\zs.*')
-      let last_pos = stridx(str, token, pos)
-    endif
     let pos = stridx(str, token, pos) + len(token)
   endwhile
   let str = a:str[last_pos :-1]

unittest.vim

@@ -122,6 +122,7 @@ function! s:test(...)
         if stridx(query, '$$$$') != -1
           silent! 1new
           silent! exe 'setlocal ft='.testgroup.type
+          EmmetInstall
           silent! let key = matchstr(query, '.*\$\$\$\$\zs.*\ze\$\$\$\$')
           if len(key) > 0
             exe printf('let key = "%s"', key)
@@ -193,6 +194,9 @@ function! s:do_tests(bang, ...)
     if exists('s:old_user_emmet_settings')
       let g:user_emmet_settings = s:old_user_emmet_settings
     endif
+    if exists('s:old_user_emmet_install_global')
+      let g:user_emmet_install_global = s:old_user_emmet_install_global
+    endif
   endtry
 endfunction
 
@@ -841,7 +845,7 @@ finish
       ],
     },
     {
-      'name': 'expand abbreviation',
+      'name': 'split join',
       'tests': [
         {
           'query': "%a foo\n  bar$$$$\\<c-y>j$$$$",