patch 8.0.0081
Problem:    Inconsistent function names.
Solution:   Rename do_cscope to ex_cscope.  Clean up comments.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 6b4e5fb..34c21e1 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -243,9 +243,9 @@
 # define ex_helpfind		ex_ni
 #endif
 #ifndef FEAT_CSCOPE
-# define do_cscope		ex_ni
-# define do_scscope		ex_ni
-# define do_cstag		ex_ni
+# define ex_cscope		ex_ni
+# define ex_scscope		ex_ni
+# define ex_cstag		ex_ni
 #endif
 #ifndef FEAT_SYN_HL
 # define ex_syntax		ex_ni
@@ -10427,7 +10427,7 @@
 #ifdef FEAT_CSCOPE
 		  if (p_cst && *eap->arg != NUL)
 		  {
-		      do_cstag(eap);
+		      ex_cstag(eap);
 		      return;
 		  }
 #endif