Replace ugly attribute token #[] to other

I use @ instead of #[] as attribute token. attribute use whitespace marks are closed. Of course you can start with @@ or #, other. error control use @@ instead of @, add T_SILENCE token new syntax: one attribute: @attribute{WHITESPACE} @otherAttribute(12){WHITESPACE} group attribute: @attribute1(1, 2),attribute2(343, 43)@attibute3(33)[WHITESPACE] current syntax: one attribute: #[attribute()] #[otherAttribute()] group attribute: #[attribute1(1, 2),attribute2(343,),attibute3(33)] below is comparison new syntax: @AttrA@AttrB(112, 334),AttrC @AttrD class A {  @AttrE  @AttrF @AttrG  public $a;  @AttrM public function m1(@AttrParma(1) $c) {} } $ab = @fn(1) fn()=> 1+2; ----------- current syntax: #[AttrA,AttrB(112, 334),AttrC] #[AttrD] class A {  #[AttrE]  #[AttrF] #[AttrG]  public $a;  #[AttrM] public function m1(#[AttrParma(1)] $c) {} } $ab = #[fn(1)] fn()=>1+2; my implemented: https://github.com/chopins/php-src/tree/new-syntax/attribute Other new syntax implemented (Verification of feasibility) : https://github.com/chopins/php-src/blob/php-alternative-syntax/alternative-syntax.md Regards Chopin Xiao