def get_valid_keywords():
    """
    Among other things, this list is used by the color highlighting in
    personal.ini editing in plugin.  Note that it's separate from
    value checking and most keywords need to be added to both.
    """
    return list(['(in|ex)clude_metadata_(pre|post)', 'add_chapter_numbers',
        'add_genre_when_multi_category', 'adult_ratings',
        'allow_unsafe_filename', 'always_overwrite', 'anthology_tags',
        'anthology_title_pattern', 'background_color', 'bulk_load',
        'chapter_end', 'chapter_start', 'chapter_title_strip_pattern',
        'chapter_title_def_pattern', 'chapter_title_add_pattern',
        'chapter_title_new_pattern', 'chapter_title_addnew_pattern',
        'title_chapter_range_pattern', 'mark_new_chapters',
        'check_next_chapter', 'skip_author_cover', 'collect_series',
        'comma_entries', 'connect_timeout', 'convert_images_to',
        'cover_content', 'cover_exclusion_regexp',
        'custom_columns_settings', 'dateCreated_format',
        'datePublished_format', 'dateUpdated_format', 'default_cover_image',
        'description_limit', 'do_update_hook', 'use_archived_author',
        'use_view_full_work', 'always_login', 'exclude_notes',
        'remove_authorfootnotes_on_update', 'exclude_editor_signature',
        'extra_logpage_entries', 'extra_subject_tags',
        'extra_titlepage_entries', 'extra_valid_entries', 'extratags',
        'extracategories', 'extragenres', 'extracharacters', 'extraships',
        'extrawarnings', 'fail_on_password', 'file_end', 'file_start',
        'fileformat', 'find_chapters', 'fix_fimf_blockquotes',
        'keep_prequel_in_description', 'include_author_notes',
        'force_login', 'generate_cover_settings', 'grayscale_images',
        'image_max_size', 'include_images', 'include_logpage',
        'logpage_at_end', 'calibre_series_meta', 'include_subject_tags',
        'include_titlepage', 'include_tocpage', 'chardet_confidence_limit',
        'is_adult', 'join_string_authorHTML', 'keep_style_attr',
        'keep_title_attr', 'keep_html_attrs', 'replace_tags_with_spans',
        'keep_empty_tags', 'keep_summary_html', 'logpage_end',
        'logpage_entries', 'logpage_entry', 'logpage_start',
        'logpage_update_end', 'logpage_update_start', 'make_directories',
        'make_firstimage_cover', 'make_linkhtml_entries', 'max_fg_sleep',
        'max_fg_sleep_at_downloads', 'min_fg_sleep', 'never_make_cover',
        'no_image_processing', 'non_breaking_spaces',
        'download_text_version', 'nook_img_fix', 'output_css',
        'output_filename', 'output_filename_safepattern', 'password',
        'post_process_cmd', 'rating_titles', 'remove_transparency',
        'replace_br_with_p', 'replace_hr', 'replace_xbr_with_hr',
        'replace_metadata', 'slow_down_sleep_time', 'sort_ships',
        'sort_ships_splits', 'strip_chapter_numbers',
        'strip_chapter_numeral', 'strip_text_links',
        'centeredcat_to_characters', 'pairingcat_to_characters_ships',
        'romancecat_to_characters_ships', 'use_meta_keywords',
        'chapter_categories_use_all', 'clean_chapter_titles',
        'conditionals_use_lists', 'description_in_chapter',
        'inject_chapter_title', 'auto_sub', 'titlepage_end',
        'titlepage_entries', 'titlepage_entry', 'titlepage_no_title_entry',
        'titlepage_start', 'titlepage_use_table', 'titlepage_wide_entry',
        'tocpage_end', 'tocpage_entry', 'tocpage_start', 'tweak_fg_sleep',
        'universe_as_series', 'use_ssl_unverified_context', 'user_agent',
        'username', 'website_encodings', 'wide_titlepage_entries',
        'windows_eol', 'wrap_width', 'zip_filename', 'zip_output',
        'capitalize_forumtags', 'continue_on_chapter_error',
        'chapter_title_error_mark', 'minimum_threadmarks',
        'first_post_title', 'always_include_first_post',
        'always_reload_first_chapter', 'always_use_forumtags',
        'use_reader_mode', 'author_avatar_cover', 'reader_posts_per_page',
        'remove_spoilers', 'legend_spoilers', 'apocrypha_to_omake',
        'skip_threadmarks_categories', 'normalize_text_links',
        'internalize_text_links', 'replace_failed_smilies_with_alt_text',
        'use_threadmark_wordcounts', 'always_include_first_post_chapters',
        'order_threadmarks_by_date', 'use_threadmarks_description',
        'use_threadmarks_status', 'use_threadmarks_cover',
        'skip_sticky_first_posts', 'datethreadmark_format',
        'fix_pseudo_html', 'fix_excess_space', 'ignore_chapter_url_list',
        'dedup_chapter_list', 'max_zalgo', 'epub_version'])
