Add angle support

autoload/neosnippet/parser.vim

@@ -315,6 +315,26 @@ function! neosnippet#parser#_get_completed_snippet(completed_item) "{{{
   " Make snippet arguments
   let cnt = 1
   let snippet = ''
+
+  if abbr =~ '<.\+>'
+    " Add angle analysis
+    let snippet .= '<'
+
+    let args = ''
+    for arg in split(substitute(
+          \ neosnippet#parser#_get_in_paren('<', '>', abbr),
+          \ '<\zs.\{-}\ze>', '', 'g'), '[^[]\zs\s*,\s*')
+      if args != ''
+        let args .= ', '
+      endif
+      let args .= printf('${%d:#:%s}', cnt, escape(arg, '{}'))
+      let cnt += 1
+    endfor
+    let snippet .= args
+    let snippet .= '>'
+  endif
+
+  let args = ''
   for arg in split(substitute(
         \ neosnippet#parser#_get_in_paren(key, pair, abbr),
         \ key.'\zs.\{-}\ze'.pair, '', 'g'), '[^[]\zs\s*,\s*')
@@ -323,12 +343,13 @@ function! neosnippet#parser#_get_completed_snippet(completed_item) "{{{
       continue
     endif
 
-    if cnt != 1
+    if args != ''
-      let snippet .= ', '
+      let args .= ', '
     endif
-    let snippet .= printf('${%d:#:%s}', cnt, escape(arg, '{}'))
+    let args .= printf('${%d:#:%s}', cnt, escape(arg, '{}'))
     let cnt += 1
   endfor
+  let snippet .= args
 
   let snippet .= pair
 

test/functions.vim

@@ -67,5 +67,10 @@ function! s:suite.get_completed_snippet()
         \ 'word' : 'foo{', 'abbr' : 'foo{piyo}',
         \ 'menu' : '', 'info' : ''
         \ }), '${1:#:piyo}}${2}')
+
+  call s:assert.equals(neosnippet#parser#_get_completed_snippet({
+        \ 'word' : 'Dictionary(', 'abbr' : 'Dictionary<Key, Value>(foo)',
+        \ 'menu' : '', 'info' : ''
+        \ }), '<${1:#:Key}, ${2:#:Value}>${3:#:foo})${4}')
 endfunction