vim-patch:7.4.1551

Problem:    Cannot generate help tags in all doc directories.
Solution:   Make ":helptags ALL" work.

6bef5306e4

src/nvim/vim.h

@@ -308,4 +308,9 @@ enum {
 # define SET_NO_HLSEARCH(flag) no_hlsearch = (flag); set_vim_var_nr( \
     VV_HLSEARCH, !no_hlsearch && p_hls)
 
+// Used for flags of do_in_path()
+#define DIP_ALL 1  // all matches, not just the first one
+#define DIP_DIR 2  // find directories instead of files
+#define DIP_ERR 4  // give an error message when none found
+
 #endif /* NVIM_VIM_H */