diff src/tag.c @ 14232:4afe2386aae8 v8.1.0133

patch 8.1.0133: tagfiles() can have duplicate entries commit https://github.com/vim/vim/commit/46577b5e5445c4aaa1e7ae1764373d11dae71663 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 30 22:40:42 2018 +0200 patch 8.1.0133: tagfiles() can have duplicate entries Problem: tagfiles() can have duplicate entries. Solution: Simplify the filename to make checking for duplicates work better. Add a test. (Dominique Pelle, closes #2979)
author Christian Brabandt <cb@256bit.org>
date Sat, 30 Jun 2018 22:45:06 +0200
parents 0e9b2971d7c3
children 3c80092eb211
line wrap: on
line diff
--- a/src/tag.c
+++ b/src/tag.c
@@ -2595,7 +2595,6 @@ findtag_end:
 }
 
 static garray_T tag_fnames = GA_EMPTY;
-static void found_tagfile_cb(char_u *fname, void *cookie);
 
 /*
  * Callback function for finding all "tags" and "tags-??" files in
@@ -2605,8 +2604,15 @@ static void found_tagfile_cb(char_u *fna
 found_tagfile_cb(char_u *fname, void *cookie UNUSED)
 {
     if (ga_grow(&tag_fnames, 1) == OK)
-	((char_u **)(tag_fnames.ga_data))[tag_fnames.ga_len++] =
-							   vim_strsave(fname);
+    {
+	char_u	*tag_fname = vim_strsave(fname);
+
+#ifdef BACKSLASH_IN_FILENAME
+	slash_adjust(tag_fname);
+#endif
+	simplify_filename(tag_fname);
+	((char_u **)(tag_fnames.ga_data))[tag_fnames.ga_len++] = tag_fname;
+    }
 }
 
 #if defined(EXITFREE) || defined(PROTO)
@@ -2638,6 +2644,7 @@ get_tagfname(
 {
     char_u		*fname = NULL;
     char_u		*r_ptr;
+    int			i;
 
     if (first)
 	vim_memset(tnp, 0, sizeof(tagname_T));
@@ -2679,6 +2686,14 @@ get_tagfname(
 	    ++tnp->tn_hf_idx;
 	    STRCPY(buf, p_hf);
 	    STRCPY(gettail(buf), "tags");
+#ifdef BACKSLASH_IN_FILENAME
+	    slash_adjust(buf);
+#endif
+	    simplify_filename(buf);
+
+	    for (i = 0; i < tag_fnames.ga_len; ++i)
+		if (STRCMP(buf, ((char_u **)(tag_fnames.ga_data))[i]) == 0)
+		    return FAIL; // avoid duplicate file names
 	}
 	else
 	    vim_strncpy(buf, ((char_u **)(tag_fnames.ga_data))[