1 files changed, 15 insertions, 13 deletions

diff --git a/src/syntax.c b/src/syntax.c
index 3be4aab4c96..d2eddafa439 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -374,22 +374,24 @@ find_defun_start (pos, pos_byte)
      syntax-tables.  */
   gl_state.current_syntax_table = current_buffer->syntax_table;
   gl_state.use_global = 0;
-  while (PT > BEGV)
+  if (open_paren_in_column_0_is_defun_start)
     {
-      /* Open-paren at start of line means we may have found our
-         defun-start.  */
-      if (SYNTAX (FETCH_CHAR (PT_BYTE)) == Sopen)
+      while (PT > BEGV)
         {
-          SETUP_SYNTAX_TABLE (PT + 1, -1);      /* Try again... */
-          if (SYNTAX (FETCH_CHAR (PT_BYTE)) == Sopen
-              && open_paren_in_column_0_is_defun_start)
-            break;
-          /* Now fallback to the default value.  */
-          gl_state.current_syntax_table = current_buffer->syntax_table;
-          gl_state.use_global = 0;
+          /* Open-paren at start of line means we may have found our
+             defun-start.  */
+          if (SYNTAX (FETCH_CHAR (PT_BYTE)) == Sopen)
+            {
+              SETUP_SYNTAX_TABLE (PT + 1, -1);  /* Try again... */
+              if (SYNTAX (FETCH_CHAR (PT_BYTE)) == Sopen)
+                break;
+              /* Now fallback to the default value.  */
+              gl_state.current_syntax_table = current_buffer->syntax_table;
+              gl_state.use_global = 0;
+            }
+          /* Move to beg of previous line.  */
+          scan_newline (PT, PT_BYTE, BEGV, BEGV_BYTE, -2, 1);
         }
-      /* Move to beg of previous line.  */
-      scan_newline (PT, PT_BYTE, BEGV, BEGV_BYTE, -2, 1);
     }
 
   /* Record what we found, for the next try.  */