From 50d6d4de67d76f03f8a8b209881a924f2d69922f Mon Sep 17 00:00:00 2001
From: Josh Triplett <josh@joshtriplett.org>
Date: Sun, 14 Jun 2020 23:30:28 -0700
Subject: [PATCH] asm: When pretty-printing, don't escape characters twice

pprust uses `print_string` to write out the template string, and
`print_string` already calls `escape_debug`, so `impl fmt::Display for
InlineAsmTemplatePiece` shouldn't do an additional `escape_debug`.

This fixes a pretty-printing bug that translated
`asm!("...\n...")`
to
`asm!("...\\n...")`
---
 src/librustc_ast/ast.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc_ast/ast.rs b/src/librustc_ast/ast.rs
index d3e3546cf31..e68cd043a9a 100644
--- a/src/librustc_ast/ast.rs
+++ b/src/librustc_ast/ast.rs
@@ -1914,7 +1914,7 @@ impl fmt::Display for InlineAsmTemplatePiece {
                     match c {
                         '{' => f.write_str("{{")?,
                         '}' => f.write_str("}}")?,
-                        _ => write!(f, "{}", c.escape_debug())?,
+                        _ => c.fmt(f)?,
                     }
                 }
                 Ok(())