[Bug #21784] Fix the Proc#source_location start_column for stabby lambdas

* Consistent with plain `blocks` and `for` blocks and methods
  where the source_location covers their entire definition.
* Matches the documentation which mentions
  "where the definition starts/ends".
* Partially reverts d357d50f0a74409446f4cccec78593373f5adf2f
  which was a workaround to be compatible with parse.y.

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/ruby/core/proc/source_location_spec.rb b/spec/ruby/core/proc/source_location_spec.rb
index 69b4e2fd82..18f1ca274c 100644
--- a/spec/ruby/core/proc/source_location_spec.rb
+++ b/spec/ruby/core/proc/source_location_spec.rb
@@ -61,7 +61,7 @@ describe "Proc#source_location" do
     ruby_version_is("4.0") do
       proc { true }.source_location.should == [__FILE__, __LINE__, 11, __LINE__, 19]
       Proc.new { true }.source_location.should == [__FILE__, __LINE__, 15, __LINE__, 23]
-      -> { true }.source_location.should == [__FILE__, __LINE__, 8, __LINE__, 17]
+      -> { true }.source_location.should == [__FILE__, __LINE__, 6, __LINE__, 17]
     end
   end
 
@@ -98,7 +98,7 @@ describe "Proc#source_location" do
       location.should == ["foo", 100]
     end
     ruby_version_is("4.0") do
-      location.should == ["foo", 100, 2, 100, 5]
+      location.should == ["foo", 100, 0, 100, 5]
     end
   end
 end