Join mutiple lines if it is more readable

Author: tesuji

src/libcore/panic.rs

@@ -39,8 +39,7 @@ pub struct PanicInfo<'a> {
 impl<'a> PanicInfo<'a> {
     #[unstable(
         feature = "panic_internals",
-        reason = "internal details of the implementation of the `panic!` \
-                         and related macros",
+        reason = "internal details of the implementation of the `panic!` and related macros",
         issue = "none"
     )]
     #[doc(hidden)]
@@ -55,8 +54,7 @@ impl<'a> PanicInfo<'a> {
 
     #[unstable(
         feature = "panic_internals",
-        reason = "internal details of the implementation of the `panic!` \
-                         and related macros",
+        reason = "internal details of the implementation of the `panic!` and related macros",
         issue = "none"
     )]
     #[doc(hidden)]
@@ -244,8 +242,7 @@ impl<'a> Location<'a> {
 impl<'a> Location<'a> {
     #![unstable(
         feature = "panic_internals",
-        reason = "internal details of the implementation of the `panic!` \
-                          and related macros",
+        reason = "internal details of the implementation of the `panic!` and related macros",
         issue = "none"
     )]
     #[doc(hidden)]

src/libcore/panicking.rs

@@ -22,8 +22,7 @@
 #![allow(dead_code, missing_docs)]
 #![unstable(
     feature = "core_panic",
-    reason = "internal details of the implementation of the `panic!` \
-              and related macros",
+    reason = "internal details of the implementation of the `panic!` and related macros",
     issue = "none"
 )]
 

src/librustc_middle/ty/context.rs

@@ -189,8 +189,7 @@ fn validate_hir_id_for_typeck_tables(
         if hir_id.owner != hir_owner {
             ty::tls::with(|tcx| {
                 bug!(
-                    "node {} with HirId::owner {:?} cannot be placed in \
-                     TypeckTables with hir_owner {:?}",
+                    "node {} with HirId::owner {:?} cannot be placed in TypeckTables with hir_owner {:?}",
                     tcx.hir().node_to_string(hir_id),
                     hir_id.owner,
                     hir_owner

src/libstd/panicking.rs

@@ -201,8 +201,7 @@ fn default_hook(info: &PanicInfo<'_>) {
                 if FIRST_PANIC.swap(false, Ordering::SeqCst) {
                     let _ = writeln!(
                         err,
-                        "note: run with `RUST_BACKTRACE=1` \
-                                           environment variable to display a backtrace"
+                        "note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace"
                     );
                 }
             }
@@ -454,10 +453,7 @@ fn rust_panic_with_hook(
     // process real quickly as we don't want to try calling it again as it'll
     // probably just panic again.
     if panics > 2 {
-        util::dumb_print(format_args!(
-            "thread panicked while processing \
-                                       panic. aborting.\n"
-        ));
+        util::dumb_print(format_args!("thread panicked while processing panic. aborting.\n"));
         intrinsics::abort()
     }
 
@@ -489,10 +485,7 @@ fn rust_panic_with_hook(
         // have limited options. Currently our preference is to
         // just abort. In the future we may consider resuming
         // unwinding or otherwise exiting the thread cleanly.
-        util::dumb_print(format_args!(
-            "thread panicked while panicking. \
-                                       aborting.\n"
-        ));
+        util::dumb_print(format_args!("thread panicked while panicking. aborting.\n"));
         intrinsics::abort()
     }