patch 7.4.941
Problem:    There is no way to ignore case only for tag searches.
Solution:   Add the 'tagcase' option. (Gary Johnson)
diff --git a/src/structs.h b/src/structs.h
index addc212..0c06401 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1674,6 +1674,8 @@
     char_u	*b_p_path;	/* 'path' local value */
     int		b_p_ar;		/* 'autoread' local value */
     char_u	*b_p_tags;	/* 'tags' local value */
+    char_u	*b_p_tc;	/* 'tagcase' local value */
+    unsigned	b_tc_flags;     /* flags for 'tagcase' */
 #ifdef FEAT_INS_EXPAND
     char_u	*b_p_dict;	/* 'dictionary' local value */
     char_u	*b_p_tsr;	/* 'thesaurus' local value */
@@ -2063,7 +2065,7 @@
 				       current virtual column */
 
     /*
-     * the next six are used to update the visual part
+     * the next seven are used to update the visual part
      */
     char	w_old_visual_mode;  /* last known VIsual_mode */
     linenr_T	w_old_cursor_lnum;  /* last known end of visual part */