[ruby/strscan] Fix a bug that scan_integer doesn't update matched

data
(ruby/strscan#133)

Fix ruby/strscan#130

Reported by Andrii Konchyn. Thanks!!!

ruby/strscan@4e5f17f87a

Author: byroot

ext/strscan/strscan.c

@@ -1292,6 +1292,10 @@ strscan_parse_integer(struct strscanner *p, int base, long len)
     integer = rb_cstr2inum(buffer, base);
     RB_ALLOCV_END(buffer_v);
     p->curr += len;
+
+    MATCHED(p);
+    adjust_registers_to_matched(p);
+    
     return integer;
 }
 
@@ -1341,7 +1345,6 @@ strscan_scan_base10_integer(VALUE self)
         return Qnil;
     }
 
-    MATCHED(p);
     p->prev = p->curr;
 
     while (len < remaining_len && rb_isdigit(ptr[len])) {
@@ -1383,7 +1386,6 @@ strscan_scan_base16_integer(VALUE self)
         return Qnil;
     }
 
-    MATCHED(p);
     p->prev = p->curr;
 
     while (len < remaining_len && rb_isxdigit(ptr[len])) {

test/strscan/test_stringscanner.rb

@@ -946,6 +946,18 @@ def test_scan_integer_encoding
     end
   end
 
+  def test_scan_integer_matched
+    omit("not implemented on TruffleRuby") if RUBY_ENGINE == "truffleruby"
+
+    s = create_string_scanner("42abc")
+    assert_equal(42, s.scan_integer)
+    assert_equal("42", s.matched)
+
+    s = create_string_scanner("42abc")
+    assert_equal(0x42abc, s.scan_integer(base: 16))
+    assert_equal("42abc", s.matched)
+  end
+
   def test_scan_integer_base_16
     omit("scan_integer isn't implemented on TruffleRuby yet") if RUBY_ENGINE == "truffleruby"