Fix multiline constant declaration in packages (rsim#207)

The regex in Variable.find required the semicolon to be on the same
line as the variable declaration. On Oracle 19c, sys.dbms_db_version
wraps the assignment to the next line:

  version constant pls_integer :=
          19;

Make the semicolon and trailing assignment optional in the regex
so the type name is matched regardless of line wrapping.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: yahonda

lib/plsql/variable.rb

@@ -9,7 +9,7 @@ def find(schema, variable, package, override_schema_name = nil)
           AND type = 'PACKAGE'
           AND UPPER(text) LIKE :variable_name",
             override_schema_name || schema.schema_name, package, "%#{variable_upcase}%").each do |row|
-        if row[0] =~ /^\s*#{variable_upcase}\s+(CONSTANT\s+)?([A-Z0-9_. %]+(\([\w\s,]+\))?)\s*(NOT\s+NULL)?\s*((:=|DEFAULT).*)?;\s*(--.*)?$/i
+        if row[0] =~ /^\s*#{variable_upcase}\s+(CONSTANT\s+)?([A-Z0-9_. %]+(\([\w\s,]+\))?)\s*(NOT\s+NULL)?\s*((:=|DEFAULT).*?)?;?\s*(--.*)?$/i
           return new(schema, variable, package, $2.strip, override_schema_name)
         end
       end

spec/plsql/variable_spec.rb

@@ -340,6 +340,32 @@
 
   end
 
+  describe "constants with multiline declaration" do
+    before(:all) do
+      plsql.connect! CONNECTION_PARAMS
+      plsql.execute "DROP PACKAGE test_multiline_pkg" rescue nil
+      plsql.execute <<-SQL
+        CREATE OR REPLACE PACKAGE test_multiline_pkg IS
+          multiline_constant CONSTANT PLS_INTEGER :=
+            42;
+        END;
+      SQL
+      plsql.execute <<-SQL
+        CREATE OR REPLACE PACKAGE BODY test_multiline_pkg IS
+        END;
+      SQL
+    end
+
+    after(:all) do
+      plsql.execute "DROP PACKAGE test_multiline_pkg" rescue nil
+      plsql.logoff
+    end
+
+    it "should get constant with multiline assignment" do
+      expect(plsql.test_multiline_pkg.multiline_constant).to eq(42)
+    end
+  end
+
   describe "object type" do
     before(:all) do
       plsql.connect! CONNECTION_PARAMS