patch 8.1.1087: tag stack is incorrect after CTRL-T and then :tagv8.1.1087

Problem:    tag stack is incorrect after CTRL-T and then :tag
Solution:   Handle DT_TAG differently. (test by Andy Massimino, closes #3944,
            closes #4177)

1 files changed, 6 insertions, 3 deletions

diff --git a/src/tag.c b/src/tag.c
index 950ab8d95a..c5cec8bc09 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -504,13 +504,16 @@ do_tag(
 		tagmatchname = vim_strsave(name);
 	    }
 
-	    if (type == DT_TAG || type == DT_SELECT || type == DT_JUMP
+	    if (type == DT_SELECT || type == DT_JUMP
 #if defined(FEAT_QUICKFIX)
 		|| type == DT_LTAG
 #endif
 		)
 		cur_match = MAXCOL - 1;
-	    max_num_matches = cur_match + 1;
+	    if (type == DT_TAG)
+		max_num_matches = MAXCOL;
+	    else
+		max_num_matches = cur_match + 1;
 
 	    /* when the argument starts with '/', use it as a regexp */
 	    if (!no_regexp && *name == '/')
@@ -583,7 +586,7 @@ do_tag(
 	    }
 	    else
 #endif
-	    if (type == DT_TAG)
+	    if (type == DT_TAG && *tag != NUL)
 		/*
 		 * If a count is supplied to the ":tag <name>" command, then
 		 * jump to count'th matching tag.