Specifically mentioning that it's a list separated by ';' and use
"will" instead of "should".
static const char messages_config_comment[] =
" Messages configuration\n"
"\n"
- " The only value supported here is 'new_tags' which lists the tags that\n"
- " should be applied to new messages.\n";
+ " The following options are supported here:\n"
+ "\n"
+ "\tnew_tags A list (separated by ';') of the tags that will be\n"
+ "\t added to all messages incorporated by \"notmuch new\".\n";
static const char user_config_comment[] =
" User configuration\n"