From c6b665792f80d697df8d59c7c75ee782655fa025 Mon Sep 17 00:00:00 2001
From: Manish Goregaokar <manishsmail@gmail.com>
Date: Sat, 21 Jun 2014 11:08:20 +0200
Subject: [PATCH] servo: Merge #2631 - Fix field-value checking to not throw
 for lone spaces; r=jdm (from Manishearth:xhr-spaces)

Source-Repo: https://github.com/servo/servo
Source-Revision: ab711fcf0cb0071a9df26af5aac4762a1281dc69
---
 servo/src/components/script/dom/bindings/str.rs | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/servo/src/components/script/dom/bindings/str.rs b/servo/src/components/script/dom/bindings/str.rs
index ae6c721abea9..6db3f6c1f975 100644
--- a/servo/src/components/script/dom/bindings/str.rs
+++ b/servo/src/components/script/dom/bindings/str.rs
@@ -94,7 +94,21 @@ impl ByteString {
                         false
                     }
                 },
-                32 | 9 => { // SP | HT
+                32 => { // SP
+                    if prev == LF || prev == SPHT {
+                        prev = SPHT;
+                        true
+                    } else if prev == Other {
+                        // Counts as an Other here, since it's not preceded by a CRLF
+                        // SP is not a CTL, so it can be used anywhere
+                        // though if used immediately after a CR the CR is invalid
+                        // We don't change prev since it's already Other
+                        true
+                    } else {
+                        false
+                    }
+                },
+                9 => { // HT
                     if prev == LF || prev == SPHT {
                         prev = SPHT;
                         true