rustc_ast_pretty: Don't print space after `$`

For example, this code:

    $arg:expr

used to be pretty-printed as:

    $ arg : expr

but is now pretty-printed as:

    $arg : expr

4 files changed, 6 insertions, 6 deletions

diff --git a/src/test/pretty/cast-lt.pp b/src/test/pretty/cast-lt.pp
index 4f6a9249090..e6c4d195691 100644
--- a/src/test/pretty/cast-lt.pp
+++ b/src/test/pretty/cast-lt.pp
@@ -8,6 +8,6 @@ extern crate std;
 // pretty-mode:expanded
 // pp-exact:cast-lt.pp
 
-macro_rules! negative { ($ e : expr) => { $ e < 0 } }
+macro_rules! negative { ($e : expr) => { $e < 0 } }
 
 fn main() { (1 as i32) < 0; }
diff --git a/src/test/pretty/delimited-token-groups.rs b/src/test/pretty/delimited-token-groups.rs
index 125f2b0fa16..257c032b536 100644
--- a/src/test/pretty/delimited-token-groups.rs
+++ b/src/test/pretty/delimited-token-groups.rs
@@ -2,7 +2,7 @@
 
 #![feature(rustc_attrs)]
 
-macro_rules! mac { ($ ($ tt : tt) *) => () }
+macro_rules! mac { ($($tt : tt) *) => () }
 
 mac! {
     struct S { field1 : u8, field2 : u16, } impl Clone for S
diff --git a/src/test/pretty/macro.rs b/src/test/pretty/macro.rs
index 1e1e1dbfb3e..d3865d93a30 100644
--- a/src/test/pretty/macro.rs
+++ b/src/test/pretty/macro.rs
@@ -2,6 +2,6 @@
 
 #![feature(decl_macro)]
 
-pub(crate) macro mac { ($ arg : expr) => { $ arg + $ arg } }
+pub(crate) macro mac { ($arg : expr) => { $arg + $arg } }
 
 fn main() { }
diff --git a/src/test/pretty/macro_rules.rs b/src/test/pretty/macro_rules.rs
index da223d164f9..3b13f2530dd 100644
--- a/src/test/pretty/macro_rules.rs
+++ b/src/test/pretty/macro_rules.rs
@@ -11,9 +11,9 @@ macro_rules! matcher_brackets {
 }
 
 macro_rules! all_fragments {
-    ($ b : block, $ e : expr, $ i : ident, $ it : item, $ l : lifetime, $ lit
-     : literal, $ m : meta, $ p : pat, $ pth : path, $ s : stmt, $ tt : tt, $
-     ty : ty, $ vis : vis) => { } ;
+    ($b : block, $e : expr, $i : ident, $it : item, $l : lifetime, $lit :
+     literal, $m : meta, $p : pat, $pth : path, $s : stmt, $tt : tt, $ty : ty,
+     $vis : vis) => { } ;
 }
 
 fn main() { }