Backport fix for a parser error that affects bootstrap

rubygem-sass-3.4.25-interpolation-crash.patch

@@ -0,0 +1,27 @@
+From 139e86e32506dbd8c301b1241f9b79aeed9cb696 Mon Sep 17 00:00:00 2001
+From: Natalie Weizenbaum <nweiz@google.com>
+Date: Wed, 4 Oct 2017 15:20:18 -0700
+Subject: [PATCH] Fix custom property interpolation (#2384)
+
+Interpolation that included the full property name (such as --#{foo})
+was crashing the parser.
+
+Closes #2383
+---
+ lib/sass/scss/rx.rb       | 2 +-
+ 1 files changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/sass/scss/rx.rb b/lib/sass/scss/rx.rb
+index 2c48a77f..16963d1e 100644
+--- a/lib/sass/scss/rx.rb
++++ b/lib/sass/scss/rx.rb
+@@ -127,7 +127,7 @@
+       OPTIONAL = /!#{W}optional/i
+       IDENT_START = /-|#{NMSTART}/
+ 
+-      IDENT_HYPHEN_INTERP = /-(#\{)/
++      IDENT_HYPHEN_INTERP = /-+(#\{)/
+       STRING1_NOINTERP = /\"((?:[^\n\r\f\\"#]|#(?!\{)|#{ESCAPE})*)\"/
+       STRING2_NOINTERP = /\'((?:[^\n\r\f\\'#]|#(?!\{)|#{ESCAPE})*)\'/
+       STRING_NOINTERP = /#{STRING1_NOINTERP}|#{STRING2_NOINTERP}/
+

rubygem-sass.spec

@@ -3,12 +3,15 @@
 
 Name: rubygem-%{gem_name}
 Version: 3.4.25
-Release: 3%{?dist}
+Release: 4%{?dist}
 Summary: A powerful but elegant CSS compiler that makes CSS fun again
 Group: Development/Languages
 License: MIT
 URL: http://sass-lang.com/
 Source0: https://rubygems.org/gems/%{gem_name}-%{version}.gem
+# Backported fix for a bug that affects bootstrap
+# https://github.com/sass/ruby-sass/commit/139e86e32506dbd8c301b1241f9b79aeed9cb696
+Patch0: rubygem-sass-3.4.25-interpolation-crash.patch
 BuildRequires: ruby(release)
 BuildRequires: rubygems-devel
 BuildRequires: rubygem(minitest)
@@ -37,6 +40,7 @@ Documentation for %{name}.
 gem unpack %{SOURCE0}
 
 %setup -q -D -T -n  %{gem_name}-%{version}
+%patch0 -p1
 
 gem spec %{SOURCE0} -l --ruby > %{gem_name}.gemspec
 
@@ -107,6 +111,9 @@ popd
 %{gem_instdir}/test
 
 %changelog
+* Mon May 28 2018 Adam Williamson <awilliam@redhat.com> - 3.4.25-4
+- Backport fix for a parser error that affects bootstrap
+
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 3.4.25-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild