From f0cf354284f269bf0ac749cf6fc3c3f0073c2c59 Mon Sep 17 00:00:00 2001
From: Nathan Weizenbaum <nex342@gmail.com>
Date: Tue, 23 Mar 2010 18:54:37 -0700
Subject: [PATCH 1/2] [Sass] List load paths when a file isn't found.

Closes gh-108
---
 doc-src/SASS_CHANGELOG.md |  3 +++
 lib/sass/files.rb         | 10 +++++++++-
 test/sass/engine_test.rb  |  7 ++++++-
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/doc-src/SASS_CHANGELOG.md b/doc-src/SASS_CHANGELOG.md
index 35ef7dea..8a56ef4d 100644
--- a/doc-src/SASS_CHANGELOG.md
+++ b/doc-src/SASS_CHANGELOG.md
@@ -8,6 +8,9 @@
 * Don't crash when `rake gems` is run in Rails with Sass installed.
   Thanks to [Florian Frank](http://github.com/flori).
 
+* When raising a file-not-found error,
+  add a list of load paths that were checked.
+
 ## 2.2.22
 
 [Tagged on GitHub](http://github.com/nex3/haml/commit/2.2.22).
diff --git a/lib/sass/files.rb b/lib/sass/files.rb
index fde24dbd..0f3c508c 100644
--- a/lib/sass/files.rb
+++ b/lib/sass/files.rb
@@ -85,7 +85,15 @@ If you really need #{filename}.css, import it explicitly.
 END
         return filename + '.css'
       end
-      raise SyntaxError.new("File to import not found or unreadable: #{original_filename}.", @line)
+
+      message = "File to import not found or unreadable: #{original_filename}.\n"
+      if load_paths.size == 1
+        message << "Load path: #{load_paths.first}"
+      else
+        message << "Load paths:\n  " << load_paths.join("\n  ")
+      end
+
+      raise SyntaxError.new(message, @line)
     end
 
     private
diff --git a/test/sass/engine_test.rb b/test/sass/engine_test.rb
index 197289e4..cdebeeeb 100755
--- a/test/sass/engine_test.rb
+++ b/test/sass/engine_test.rb
@@ -55,7 +55,12 @@ MSG
     "a," => "Rules can\'t end in commas.",
     "a,\n!b = 1" => ["Rules can\'t end in commas.", 1],
     "!a = b\n  :c d\n" => "Illegal nesting: Nothing may be nested beneath variable declarations.",
-    "@import foo.sass" => "File to import not found or unreadable: foo.sass.",
+    "@import foo.sass" => <<MSG,
+File to import not found or unreadable: foo.sass.
+Load paths:
+  test/sass
+  .
+MSG
     "@import templates/basic\n  foo" => "Illegal nesting: Nothing may be nested beneath import directives.",
     "foo\n  @import templates/basic" => "Import directives may only be used at the root of a document.",
     "foo\n  @import #{File.dirname(__FILE__)}/templates/basic" => "Import directives may only be used at the root of a document.",

From 0a52f55d3e1396f2575b00643f6c5ca574543a58 Mon Sep 17 00:00:00 2001
From: Nathan Weizenbaum <nex342@gmail.com>
Date: Tue, 23 Mar 2010 20:06:28 -0700
Subject: [PATCH 2/2] [Sass] Print exceptions properly when they're raised in
 cached files.

---
 doc-src/SASS_CHANGELOG.md | 4 ++++
 lib/sass/plugin.rb        | 9 +++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/doc-src/SASS_CHANGELOG.md b/doc-src/SASS_CHANGELOG.md
index 8a56ef4d..175ffd92 100644
--- a/doc-src/SASS_CHANGELOG.md
+++ b/doc-src/SASS_CHANGELOG.md
@@ -11,6 +11,10 @@
 * When raising a file-not-found error,
   add a list of load paths that were checked.
 
+* If an import isn't found for a cached Sass file and the
+  {file:SASS_REFERENCE.md#full_exception `:full_exception option`} is enabled,
+  print the full exception rather than raising it.
+
 ## 2.2.22
 
 [Tagged on GitHub](http://github.com/nex3/haml/commit/2.2.22).
diff --git a/lib/sass/plugin.rb b/lib/sass/plugin.rb
index 947725ef..5cbcf2fd 100644
--- a/lib/sass/plugin.rb
+++ b/lib/sass/plugin.rb
@@ -204,8 +204,13 @@ END
 
     def dependency_updated?(css_mtime)
       lambda do |dep|
-        File.mtime(dep) > css_mtime ||
-          dependencies(dep).any?(&dependency_updated?(css_mtime))
+        begin
+          File.mtime(dep) > css_mtime ||
+            dependencies(dep).any?(&dependency_updated?(css_mtime))
+        rescue Sass::SyntaxError
+          # If there's an error finding depenencies, default to recompiling.
+          true
+        end
       end
     end