Add some units behavior of css. Close #264

autoload/emmet/lang/css.vim

@@ -31,7 +31,7 @@ function! emmet#lang#css#parseIntoTree(abbr, type) abort
   else
     for n in range(len(tokens))
       let token = tokens[n]
-      let prop = matchlist(token, '^\(-\{0,1}[a-zA-Z]\+\|[a-zA-Z0-9]\++\{0,1}\|([a-zA-Z0-9]\++\{0,1})\)\(\%([0-9.-]\+[pe]\{0,1}-\{0,1}\|-auto\)*\)$')
+      let prop = matchlist(token, '^\(-\{0,1}[a-zA-Z]\+\|[a-zA-Z0-9]\++\{0,1}\|([a-zA-Z0-9]\++\{0,1})\)\(\%([0-9.-]\+\%(p\|e\|em\|re\|rem\|%\)\{0,1}-\{0,1}\|-auto\)*\)$')
       if len(prop)
         let token = substitute(prop[1], '^(\(.*\))', '\1', '')
         if token =~# '^-'
@@ -48,8 +48,16 @@ function! emmet#lang#css#parseIntoTree(abbr, type) abort
             let value .= substitute(v, '[^0-9.]*$', '', '')
           elseif v =~# 'p$'
             let value .= substitute(v, 'p$', '%', '')
+          elseif v =~# '%$'
+            let value .= v
           elseif v =~# 'e$'
             let value .= substitute(v, 'e$', 'em', '')
+          elseif v =~# 'em$'
+            let value .= v
+          elseif v =~# 're$'
+            let value .= substitute(v, 're$', 'rem', '')
+          elseif v =~# 'rem$'
+            let value .= v
           elseif v =~# '\.'
             let value .= v . 'em'
           elseif v ==# 'auto'

unittest.vim

@@ -734,6 +734,30 @@ finish
           'query': "{dn$$$$}",
           'result': "{display: none;}",
         },
+        {
+          'query': "{p10%$$$$}",
+          'result': "{padding: 10%;}",
+        },
+        {
+          'query': "{p10p$$$$}",
+          'result': "{padding: 10%;}",
+        },
+        {
+          'query': "{p10e$$$$}",
+          'result': "{padding: 10em;}",
+        },
+        {
+          'query': "{p10em$$$$}",
+          'result': "{padding: 10em;}",
+        },
+        {
+          'query': "{p10re$$$$}",
+          'result': "{padding: 10rem;}",
+        },
+        {
+          'query': "{p10rem$$$$}",
+          'result': "{padding: 10rem;}",
+        },
       ],
     },
   ],