config anomalies in tin:

different variable names in tinrc file and struct tinrc:
post_process_type	tinrc.post_process
show_only_unread	tinrc.show_only_unread_arts
default_maildir		tinrc.maildir
default_savedir		tinrc.savedir
default_printer		tinrc.printer
default_editor_format	tinrc.editor_format
default_mailer_format	tinrc.mailer_format
default_sigfile		tinrc.sigfile
default_filter_days	tinrc.filter_days

changing the struct tinrc names can help cleaning up read/write_config_file()
a lot if variable name is saved in option_table (t_option should hold the
variable name).

not in struct option_table, but different variable names in tinrc
file and struct tinrc:
default_author_search	tinrc.default_search_author
default_config_search	tinrc.default_search_config
default_group_search	tinrc.default_search_group
default_subject_search	tinrc.default_search_subject
default_art_search	tinrc.default_search_art
default_repost_group	tinrc.default_repost_group

integrate txt_tinrc_colors in txt_col_normal.tinrc

Values of post_mime_encoding and mail_mime_encoding are generated from a
list.

news_headers_to_display, news_headers_to_not_display must be converted to a
string before writing to tinrc file.

quote_chars must be converted by quote_space_to_dash() before writing to
tinrc file.

art_marked_deleted, art_marked_inrange, art_marked_return,
art_marked_selected, art_marked_recent, art_marked_unread, art_marked_read,
art_marked_killed and art_marked_read_selected must be converted by
SPACE_TO_DASH() before writing to tinrc file.

default_filter_kill_case and default_filter_select_case write inverted values
to tinrc file (not really a problem -- these are not in option_table and must
be handled explicitly anyway)

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tinrc variables that should be removed because they can be used in the
attributes file with scope=*:

default_savedir                savedir in attributes
auto_save
mark_saved_read              *
post_process_type              post_proc_type in attributes
post_process_view            *
process_only_unread          *
prompt_followupto            *
pos_first_unread             *
show_only_unread             *
kill_level                   *
tab_goto_next_unread         *
space_goto_next_unread       *
pgdn_goto_next               *
full_page_scroll             *
show_last_line_prev_page     *
group_catchup_on_exit        *
thread_catchup_on_exit       *
thread_articles                thread_arts in attributes
show_author
news_headers_to_display      *
news_headers_to_not_display  *
sort_article_type              sort_art_type in attributes
sort_threads_type
default_maildir                maildir in attributes
print_header                 *
batch_save
start_editor_offset          * allows for different editors in different
default_editor_format        * hierarchies (e.g. a special one for asian
                               newsgroups)
show_info                    *
posted_articles_file         *
add_posted_to_filter         *
default_sigfile                sigfile in attributes
sigdashes                    * it doesn't make sense to set that globally if
                               you can have different sigfiles in different
                               groups
signature_repost             *
advertising                  *
quote_chars
quote_regex                  *
quote_regex2                 *
quote_regex3                 *
strip_re_regex               *
strip_was_regex              *
show_signatures              *
hide_uue                     *
news_quote_format
mail_quote_format            *
xpost_quote_format           *
auto_cc                      *
auto_bcc                     *
default_filter_days          *
getart_limit                 *
recent_time                  *
mail_address                   from in attributes; should be splitted into
                               username and addresse
mm_charset                     mm_network_charset
                               (if charset conversion is available)
post_mime_encoding           *
mail_mime_encoding           *
post_8bit_header             *
mail_8bit_header             *
default_filter_kill_header     quick_kill_header in attributes
default_filter_kill_global     quick_kill_scope=* in attributes
default_filter_kill_case       quick_kill_case in attributes
default_filter_kill_expire     quick_kill_expire in attributes
default_filter_select_header   quick_select_header in attributes
default_filter_select_global   quick_select_scope=* in attributes
default_filter_select_case     quick_select_case in attributes
default_filter_select_expire   quick_select_expire in attributes
default_save_file              savefile in attributes

*) These variables are not available in attributes yet.

variables with different types in tinrc and attributes:
default_filter_kill_header (int)     quick_kill_header (unsigned int)
default_filter_select_header (int)   quick_select_header (unsigned int)
thread_articles (int)                thread_arts (unsigned int)
sort_article_type (int)              sort_art_type (unsigned int)
sort_threads_type (int)              sort_threads_type (unsigned int)
show_author (int)                    show_author (unsigned int)
post_process (int)                   post_proc_type (unsigned int)
