/++
  regex: regular expressions used in sisu document parser
+/
template SiSUoutputRgxInit() {
  private import defaults;
  struct Rgx {
    static newline                                        = ctRegex!("\n", "mg");
    static strip_br                                       = ctRegex!("^<br>\n|<br>\n*$");
    static space                                          = ctRegex!(`[ ]`, "mg");
    static spaces_line_start                              = ctRegex!(`^(?P<opening_spaces>[ ]+)`, "mg");
    static spaces_multiple                                = ctRegex!(`(?P<multiple_spaces>[ ]{2,})`, "mg"); // could be issues for endnotes
    static two_spaces                                     = ctRegex!(`[ ]{2}`, "mg");
    static nbsp_char                                      = ctRegex!(`░`, "mg");
    static nbsp_chars_line_start                          = ctRegex!(`^░+`, "mg");
    static nbsp_and_space                                 = ctRegex!(`&nbsp;[ ]`, "mg");
    static nbsp_char_and_space                            = ctRegex!(`░[ ]`, "mg");
    static src_pth                                        = ctRegex!(`^(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[tm])$`);
    static src_fn                                         =
      ctRegex!(`^([a-zA-Z0-9._-]+/)*(?P<fn_src>(?P<fn_base>[a-zA-Z0-9._-]+)[.](?P<fn_src_suffix>ss[tm]))$`);
    static src_fn_master                                  = ctRegex!(`^(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ssm)$`);
    static src_fn_text                                    = ctRegex!(`^(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]sst)$`);
    static src_fn_insert                                  = ctRegex!(`^(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ssi)$`);
    static src_fn_find_inserts                            = ctRegex!(`^(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[im])$`);
    static insert_src_fn_ssi_or_sst                       = ctRegex!(`^<<\s*(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[ti])$`);
    /+ inline markup footnotes endnotes +/
    static inline_notes_al                                = ctRegex!(`【(?:[*+]\s+|\s*)(.+?)】`, "mg");
    static inline_notes_al_gen                            = ctRegex!(`【.+?】`, "m");
    static inline_al_delimiter_open_regular               = ctRegex!(`【\s`, "m");
    static inline_al_delimiter_open_symbol_star           = ctRegex!(`【[*]\s`, "m");
    static inline_al_delimiter_open_symbol_plus           = ctRegex!(`【[+]\s`, "m");
    static inline_al_delimiter_close_regular              = ctRegex!(`】`, "m");
    static inline_al_delimiter_open_and_close_regular     = ctRegex!(`【|】`, "m");
    static inline_notes_delimiter_al_regular              = ctRegex!(`【(.+?)】`, "mg");
    static inline_notes_delimiter_al_regular_number_note  = ctRegex!(`【(\d+)\s+(.+?)】`, "mg");
    static inline_al_delimiter_open_asterisk              = ctRegex!(`【\*`, "m");
    static inline_al_delimiter_open_plus                  = ctRegex!(`【\+`, "m");
    static inline_text_and_note_al                        = ctRegex!(`(?P<text>.+?)【(?:[*+ ]*)(?P<note>.+?)】`, "mg");
    static inline_text_and_note_al_                       = ctRegex!(`(.+?(?:【[*+]*\s+.+?】|$))`, "mg");
    /+ inline markup footnotes endnotes +/
    static inline_link                                    = ctRegex!(`┥(.+?)┝┤(.+?)├`, "mg");
    static inline_a_url                                   = ctRegex!(`(┤)(\S+?)(├)`, "mg");
    static fn_suffix                                      = ctRegex!(`\.fnSuffix`, "mg");
    static inline_link_fn_suffix                          = ctRegex!(`¤(.+?)(\.fnSuffix)`, "mg");
    static inline_seg_link                                = ctRegex!(`(¤)(?:.+?)\.fnSuffix`, "mg");
    static mark_internal_site_lnk                         = ctRegex!(`¤`, "mg");
    /+ inline markup font face mod +/
    static inline_faces                                   = ctRegex!(`(?P<markup>(?P<mod>[*!_^,+#-])\{(?P<text>.+?)\}[*!_^,+#-])`, "mg");
    static inline_emphasis                                = ctRegex!(`\*\{(?P<text>.+?)\}\*`, "mg");
    static inline_bold                                    = ctRegex!(`!\{(?P<text>.+?)\}!`, "mg");
    static inline_underscore                              = ctRegex!(`_\{(?P<text>.+?)\}_`, "mg");
    static inline_italics                                 = ctRegex!(`/\{(?P<text>.+?)\}/`, "mg");
    static inline_superscript                             = ctRegex!(`\^\{(?P<text>.+?)\}\^`, "mg");
    static inline_subscript                               = ctRegex!(`,\{(?P<text>.+?)\},`, "mg");
    static inline_strike                                  = ctRegex!(`-\{(?P<text>.+?)\}-`, "mg");
    static inline_insert                                  = ctRegex!(`\+\{(?P<text>.+?)\}\+`, "mg");
    static inline_mono                                    = ctRegex!(`#\{(?P<text>.+?)\}#`, "mg");
    static inline_cite                                    = ctRegex!(`"\{(?P<text>.+?)\}"`, "mg");
    static inline_faces_line                              = ctRegex!(`^[*!/_]_ (?P<text>.+?)((?: [\\]{2}|[~]#){0,2}$)`);
    static inline_emphasis_line                           = ctRegex!(`^\*_ (?P<text>.+?)((?: [\\]{2}|[~]#){0,2}$)`);
    static inline_bold_line                               = ctRegex!(`^!_ (?P<text>.+?)((?: [\\]{2}|[~]#){0,2}$)`);
    static inline_italics_line                            = ctRegex!(`^/_ (?P<text>.+?)((?: [\\]{2}|[~]#){0,2}$)`);
    static inline_underscore_line                         = ctRegex!(`^__ (?P<text>.+?)((?: [\\]{2}|[~]#){0,2}$)`);
    /+ table delimiters +/
    static table_delimiter_col                           = ctRegex!("[ ]*[┊][ ]*", "mg"); //
    static table_delimiter_row                           = ctRegex!("[ ]*\n", "mg"); //
    static xhtml_ampersand                            = ctRegex!(`[&]`);      // &amp;
    static xhtml_quotation                            = ctRegex!(`[&]`);      // &quot;
    static xhtml_less_than                            = ctRegex!(`[<]`);      // &lt;
    static xhtml_greater_than                         = ctRegex!(`[>]`);      // &gt;
    static xhtml_line_break                           = ctRegex!(` [\\]{2}`); // <br />
  }
}