Make exclusion visible again

This reverts

dfee0f9 man: remove search.exclude_tags from notmuch-config.1 for 0.12
e83409d NEWS: revert NEWS item for exclude tags for 0.12
e77b031 config: disable addition of exclude tags for 0.12

NEWS

@@ -11,6 +11,24 @@ Reply to sender
   to all. The feature is available through the new command line option
   --reply-to=(all|sender).
 
+Tag exclusion
+
+  Tags can be automatically excluded from search results by adding them
+  to the new 'search.exclude_tags' option in the Notmuch config file.
+
+  This behaviour can be overridden by explicitly including an excluded
+  tag in your query, for example:
+
+    notmuch search $your_query and tag:$excluded_tag
+
+  Existing users will probably want to run "notmuch setup" again to add
+  the new well-commented [search] section to the configuration file.
+
+  For new configurations, accepting the default setting will cause the
+  tags "deleted" and "spam" to be excluded, equivalent to running:
+
+    notmuch config set search.exclude_tags deleted spam
+
 Mail store folder/file ignore
 
    A new configuration option, `new.ignore`, lets users specify a

man/man1/notmuch-config.1

@@ -83,6 +83,14 @@ will be ignored, regardless of the location in the mail store
 directory hierarchy.
 .RE
 
+.RS 4
+.TP 4
+.B search.exclude_tags
+A list of tags that will be excluded from search results by
+default. Using an excluded tag in a query will override that
+exclusion.
+.RE
+
 .RS 4
 .TP 4
 .B maildir.synchronize_flags

notmuch-config.c

@@ -377,7 +377,8 @@ notmuch_config_open (void *ctx,
 
     if (notmuch_config_get_search_exclude_tags (config, &tmp) == NULL) {
 	if (is_new) {
-	    /* We do not set default search_exclude_tags for 0.12 */
+	    const char *tags[] = { "deleted", "spam" };
+	    notmuch_config_set_search_exclude_tags (config, tags, 2);
 	} else {
 	    notmuch_config_set_search_exclude_tags (config, NULL, 0);
 	}

notmuch-setup.c

@@ -133,6 +133,8 @@ notmuch_setup_command (unused (void *ctx),
     int is_new;
     const char **new_tags;
     size_t new_tags_len;
+    const char **search_exclude_tags;
+    size_t search_exclude_tags_len;
 
 #define prompt(format, ...)					\
     do {							\
@@ -209,7 +211,22 @@ notmuch_setup_command (unused (void *ctx),
     }
 
 
-    /* Temporarily remove exclude tag support for 0.12 */
+    search_exclude_tags = notmuch_config_get_search_exclude_tags (config, &search_exclude_tags_len);
+
+    printf ("Tags to exclude when searching messages (separated by spaces) [");
+    print_tag_list (search_exclude_tags, search_exclude_tags_len);
+    prompt ("]: ");
+
+    if (strlen (response)) {
+	GPtrArray *tags = parse_tag_list (ctx, response);
+
+	notmuch_config_set_search_exclude_tags (config,
+						(const char **) tags->pdata,
+						tags->len);
+
+	g_ptr_array_free (tags, TRUE);
+    }
+
 
     if (! notmuch_config_save (config)) {
 	if (is_new)