vim-patch:8.0.1488: emacs tags no longer work

Problem:    Emacs tags no longer work. (zdohnal)
Solution:   Do not skip over end of line.
0d20737732

src/nvim/tag.c

@@ -2223,7 +2223,7 @@ static size_t matching_line_len(const char_u *const lbuf)
   const char_u *p = lbuf + 1;
 
   // does the same thing as parse_match()
-  p += STRLEN(p) + 2;
+  p += STRLEN(p) + 1;
   return (p - lbuf) + STRLEN(p);
 }
 

src/nvim/testdir/test_tagjump.vim

@@ -230,4 +230,32 @@ func Test_tag_file_encoding()
   call delete('Xtags1')
 endfunc
 
+func Test_tagjump_etags()
+  if !has('emacs_tags')
+    return
+  endif
+  call writefile([
+        \ "void foo() {}",
+        \ "int main(int argc, char **argv)",
+        \ "{",
+        \ "\tfoo();",
+        \ "\treturn 0;",
+        \ "}",
+        \ ], 'Xmain.c')
+
+  call writefile([
+	\ "\x0c",
+        \ "Xmain.c,64",
+        \ "void foo() {}\x7ffoo\x011,0",
+        \ "int main(int argc, char **argv)\x7fmain\x012,14",
+	\ ], 'Xtags')
+  set tags=Xtags
+  ta foo
+  call assert_equal('void foo() {}', getline('.'))
+
+  call delete('Xtags')
+  call delete('Xmain.c')
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab