Fix (un)sidebar_whitelist to expand paths.

Thanks to Arturo for reporting the issue.

init.c

@@ -941,6 +941,46 @@ static int parse_unlist (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err
   return 0;
 }
 
+static int parse_path_list (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
+{
+  char path[_POSIX_PATH_MAX];
+
+  do
+  {
+    mutt_extract_token (buf, s, 0);
+    strfcpy (path, buf->data, sizeof (path));
+    mutt_expand_path (path, sizeof (path));
+    add_to_list ((LIST **) data, path);
+  }
+  while (MoreArgs (s));
+
+  return 0;
+}
+
+static int parse_path_unlist (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
+{
+  char path[_POSIX_PATH_MAX];
+
+  do
+  {
+    mutt_extract_token (buf, s, 0);
+    /*
+     * Check for deletion of entire list
+     */
+    if (mutt_strcmp (buf->data, "*") == 0)
+    {
+      mutt_free_list ((LIST **) data);
+      break;
+    }
+    strfcpy (path, buf->data, sizeof (path));
+    mutt_expand_path (path, sizeof (path));
+    remove_from_list ((LIST **) data, path);
+  }
+  while (MoreArgs (s));
+
+  return 0;
+}
+
 static int parse_lists (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
 {
   group_context_t *gc = NULL;

init.h

@@ -3880,6 +3880,8 @@ const struct mapping_t SortSidebarMethods[] = {
 static int parse_list (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_spam_list (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 static int parse_unlist (BUFFER *, BUFFER *, unsigned long, BUFFER *);
+static int parse_path_list (BUFFER *, BUFFER *, unsigned long, BUFFER *);
+static int parse_path_unlist (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 
 static int parse_group (BUFFER *, BUFFER *, unsigned long, BUFFER *);
 
@@ -3975,8 +3977,8 @@ const struct command_t Commands[] = {
   { "set",		parse_set,		0 },
   { "setenv",		parse_setenv,		0 },
 #ifdef USE_SIDEBAR
-  { "sidebar_whitelist",parse_list,		UL &SidebarWhitelist },
-  { "unsidebar_whitelist",parse_unlist,		UL &SidebarWhitelist },
+  { "sidebar_whitelist",parse_path_list,	UL &SidebarWhitelist },
+  { "unsidebar_whitelist",parse_path_unlist,	UL &SidebarWhitelist },
 #endif
   { "source",		parse_source,		0 },
   { "spam",		parse_spam_list,	MUTT_SPAM },