variable name ":", "#" (disabled)

Author: ynkdir

autoload/vimlparser.vim

@@ -191,6 +191,7 @@ let s:TOKEN_OR = 60
 let s:TOKEN_SEMICOLON = 61
 let s:TOKEN_BACKTICK = 62
 let s:TOKEN_DOTDOTDOT = 63
+let s:TOKEN_SHARP = 64
 
 let s:MAX_FUNC_ARGS = 20
 
@@ -2486,6 +2487,9 @@ function! s:ExprTokenizer.get2()
   elseif c ==# ':'
     call r.seek_cur(1)
     return self.token(s:TOKEN_COLON, ':', pos)
+  elseif c ==# '#'
+    call r.seek_cur(1)
+    return self.token(s:TOKEN_SHARP, '#', pos)
   elseif c ==# '('
     call r.seek_cur(1)
     return self.token(s:TOKEN_POPEN, '(', pos)
@@ -3187,6 +3191,10 @@ function! s:ExprParser.parse_expr9()
   elseif token.type == s:TOKEN_IDENTIFIER
     call self.reader.seek_set(pos)
     let node = self.parse_identifier()
+  elseif 0 && (token.type == s:TOKEN_COLON || token.type == s:TOKEN_SHARP)
+    " XXX: no parse error but invalid expression
+    call self.reader.seek_set(pos)
+    let node = self.parse_identifier()
   elseif token.type == s:TOKEN_LT && self.reader.peekn(4) ==? 'SID>'
     call self.reader.seek_set(pos)
     let node = self.parse_identifier()

test/test_xxx_colonsharp.ok

@@ -0,0 +1,28 @@
+; XXX: no parse error but invalid expression
+(echo :)
+(echo #)
+(echo ::)
+(echo ##)
+(echo :#:#)
+(echo #:#:)
+(echo :foo)
+(echo #bar)
+(echo x:y:z)
+(echo x:y:1)
+(echo x:1:y)
+(echo 1 :x:y)
+(echo (slice x nil :))
+(echo (slice x nil :y))
+(echo (subscript x y:))
+(echo (subscript x y:z))
+(echo (subscript x #:#))
+(echo (subscript x y:#))
+(echo (dict ("x" :)))
+; NOTE: vim stop parse at first colon because ":" is undefined variable
+(echo (dict (: :)))
+; NOTE: curly name
+(echo {:})
+(echo {::})
+(echo {x:y})
+(echo (?: 0 1 :))
+(echo (?: 0 : 1))

test/test_xxx_colonsharp.vim

@@ -0,0 +1,28 @@
+" XXX: no parse error but invalid expression
+echo :
+echo #
+echo ::
+echo ##
+echo :#:#
+echo #:#:
+echo :foo
+echo #bar
+echo x:y:z
+echo x:y:1
+echo x:1:y
+echo 1:x:y
+echo x[::]
+echo x[::y]
+echo x[y:]
+echo x[y:z]
+echo x[#:#]
+echo x[y:#]
+echo {"x"::}
+" NOTE: vim stop parse at first colon because ":" is undefined variable
+echo {: : :}
+" NOTE: curly name
+echo {:}
+echo {::}
+echo {x:y}
+echo (0 ? 1 : :)
+echo (0 ? : : 1)