patch 9.0.1234: the code style has to be checked manually

Problem:    The code style has to be checked manually.
Solution:   Add basic code style checks in a test.  Fix or avoid uncovered
            problems.
diff --git a/src/search.c b/src/search.c
index 219afd5..8809f5d 100644
--- a/src/search.c
+++ b/src/search.c
@@ -161,7 +161,7 @@
 	add_to_history(HIST_SEARCH, pat, TRUE, NUL);
 
     if (used_pat)
-            *used_pat = pat;
+	*used_pat = pat;
 
     vim_free(mr_pattern);
 #ifdef FEAT_RIGHTLEFT
@@ -2641,7 +2641,7 @@
 	     * (actually, we skip #\( et al)
 	     */
 	    if (curbuf->b_p_lisp
-		    && vim_strchr((char_u *)"(){}[]", c) != NULL
+		    && vim_strchr((char_u *)"{}()[]", c) != NULL
 		    && pos.col > 1
 		    && check_prevcol(linep, pos.col, '\\', NULL)
 		    && check_prevcol(linep, pos.col - 1, '#', NULL))