From eb2e38131754a655b6ee5d2c6f81ef6ded4dc3bf Mon Sep 17 00:00:00 2001
From: robyngit <thiessenbock@nceas.ucsb.edu>
Date: Thu, 19 Sep 2024 14:32:29 -0400
Subject: [PATCH 1/3] Update showdown from v 1.9.0 to v 2.1.0

Markdown renderer: 10-11-2018 version to 21-04-2022 version

Issue #1383
---
 src/components/showdown/showdown.min.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/components/showdown/showdown.min.js b/src/components/showdown/showdown.min.js
index 2e2adadb1..cf721d9f0 100644
--- a/src/components/showdown/showdown.min.js
+++ b/src/components/showdown/showdown.min.js
@@ -1,3 +1,3 @@
-/*! showdown v 1.9.0 - 10-11-2018 */
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",dolls:"🎎",dolphin:"🐬",door:"🚪",doughnut:"🍩",dove:"🕊",dragon:"🐉",dragon_face:"🐲",dress:"👗",dromedary_camel:"🐪",drooling_face:"🤤",droplet:"💧",drum:"🥁",duck:"🦆",dvd:"📀","e-mail":"📧",eagle:"🦅",ear:"👂",ear_of_rice:"🌾",earth_africa:"🌍",earth_americas:"🌎",earth_asia:"🌏",egg:"🥚",eggplant:"🍆",eight_pointed_black_star:"✴️",eight_spoked_asterisk:"✳️",electric_plug:"🔌",elephant:"🐘",email:"✉️",end:"🔚",envelope_with_arrow:"📩",euro:"💶",european_castle:"🏰",european_post_office:"🏤",evergreen_tree:"🌲",exclamation:"❗️",expressionless:"😑",eye:"👁",eye_speech_bubble:"👁&zwj;🗨",eyeglasses:"👓",eyes:"👀",face_with_head_bandage:"🤕",face_with_thermometer:"🤒",fist_oncoming:"👊",factory:"🏭",fallen_leaf:"🍂",family_man_woman_boy:"👪",family_man_boy:"👨&zwj;👦",family_man_boy_boy:"👨&zwj;👦&zwj;👦",family_man_girl:"👨&zwj;👧",family_man_girl_boy:"👨&zwj;👧&zwj;👦",family_man_girl_girl:"👨&zwj;👧&zwj;👧",family_man_man_boy:"👨&zwj;👨&zwj;👦",family_man_man_boy_boy:"👨&zwj;👨&zwj;👦&zwj;👦",family_man_man_girl:"👨&zwj;👨&zwj;👧",family_man_man_girl_boy:"👨&zwj;👨&zwj;👧&zwj;👦",family_man_man_girl_girl:"👨&zwj;👨&zwj;👧&zwj;👧",family_man_woman_boy_boy:"👨&zwj;👩&zwj;👦&zwj;👦",family_man_woman_girl:"👨&zwj;👩&zwj;👧",family_man_woman_girl_boy:"👨&zwj;👩&zwj;👧&zwj;👦",family_man_woman_girl_girl:"👨&zwj;👩&zwj;👧&zwj;👧",family_woman_boy:"👩&zwj;👦",family_woman_boy_boy:"👩&zwj;👦&zwj;👦",family_woman_girl:"👩&zwj;👧",family_woman_girl_boy:"👩&zwj;👧&zwj;👦",family_woman_girl_girl:"👩&zwj;👧&zwj;👧",family_woman_woman_boy:"👩&zwj;👩&zwj;👦",family_woman_woman_boy_boy:"👩&zwj;👩&zwj;👦&zwj;👦",family_woman_woman_girl:"👩&zwj;👩&zwj;👧",family_woman_woman_girl_boy:"👩&zwj;👩&zwj;👧&zwj;👦",family_woman_woman_girl_girl:"👩&zwj;👩&zwj;👧&zwj;👧",fast_forward:"⏩",fax:"📠",fearful:"😨",feet:"🐾",female_detective:"🕵️&zwj;♀️",ferris_wheel:"🎡",ferry:"⛴",field_hockey:"🏑",file_cabinet:"🗄",file_folder:"📁",film_projector:"📽",film_strip:"🎞",fire:"🔥",fire_engine:"🚒",fireworks:"🎆",first_quarter_moon:"🌓",first_quarter_moon_with_face:"🌛",fish:"🐟",fish_cake:"🍥",fishing_pole_and_fish:"🎣",fist_raised:"✊",fist_left:"🤛",fist_right:"🤜",flags:"🎏",flashlight:"🔦",fleur_de_lis:"⚜️",flight_arrival:"🛬",flight_departure:"🛫",floppy_disk:"💾",flower_playing_cards:"🎴",flushed:"😳",fog:"🌫",foggy:"🌁",football:"🏈",footprints:"👣",fork_and_knife:"🍴",fountain:"⛲️",fountain_pen:"🖋",four_leaf_clover:"🍀",fox_face:"🦊",framed_picture:"🖼",free:"🆓",fried_egg:"🍳",fried_shrimp:"🍤",fries:"🍟",frog:"🐸",frowning:"😦",frowning_face:"☹️",frowning_man:"🙍&zwj;♂️",frowning_woman:"🙍",middle_finger:"🖕",fuelpump:"⛽️",full_moon:"🌕",full_moon_with_face:"🌝",funeral_urn:"⚱️",game_die:"🎲",gear:"⚙️",gem:"💎",gemini:"♊️",ghost:"👻",gift:"🎁",gift_heart:"💝",girl:"👧",globe_with_meridians:"🌐",goal_net:"🥅",goat:"🐐",golf:"⛳️",golfing_man:"🏌️",golfing_woman:"🏌️&zwj;♀️",gorilla:"🦍",grapes:"🍇",green_apple:"🍏",green_book:"📗",green_heart:"💚",green_salad:"🥗",grey_exclamation:"❕",grey_question:"❔",grimacing:"😬",grin:"😁",grinning:"😀",guardsman:"💂",guardswoman:"💂&zwj;♀️",guitar:"🎸",gun:"🔫",haircut_woman:"💇",haircut_man:"💇&zwj;♂️",hamburger:"🍔",hammer:"🔨",hammer_and_pick:"⚒",hammer_and_wrench:"🛠",hamster:"🐹",hand:"✋",handbag:"👜",handshake:"🤝",hankey:"💩",hatched_chick:"🐥",hatching_chick:"🐣",headphones:"🎧",hear_no_evil:"🙉",heart:"❤️",heart_decoration:"💟",heart_eyes:"😍",heart_eyes_cat:"😻",heartbeat:"💓",heartpulse:"💗",hearts:"♥️",heavy_check_mark:"✔️",heavy_division_sign:"➗",heavy_dollar_sign:"💲",heavy_heart_exclamation:"❣️",heavy_minus_sign:"➖",heavy_multiplication_x:"✖️",heavy_plus_sign:"➕",helicopter:"🚁",herb:"🌿",hibiscus:"🌺",high_brightness:"🔆",high_heel:"👠",hocho:"🔪",hole:"🕳",honey_pot:"🍯",horse:"🐴",horse_racing:"🏇",hospital:"🏥",hot_pepper:"🌶",hotdog:"🌭",hotel:"🏨",hotsprings:"♨️",hourglass:"⌛️",hourglass_flowing_sand:"⏳",house:"🏠",house_with_garden:"🏡",houses:"🏘",hugs:"🤗",hushed:"😯",ice_cream:"🍨",ice_hockey:"🏒",ice_skate:"⛸",icecream:"🍦",id:"🆔",ideograph_advantage:"🉐",imp:"👿",inbox_tray:"📥",incoming_envelope:"📨",tipping_hand_woman:"💁",information_source:"ℹ️",innocent:"😇",interrobang:"⁉️",iphone:"📱",izakaya_lantern:"🏮",jack_o_lantern:"🎃",japan:"🗾",japanese_castle:"🏯",japanese_goblin:"👺",japanese_ogre:"👹",jeans:"👖",joy:"😂",joy_cat:"😹",joystick:"🕹",kaaba:"🕋",key:"🔑",keyboard:"⌨️",keycap_ten:"🔟",kick_scooter:"🛴",kimono:"👘",kiss:"💋",kissing:"😗",kissing_cat:"😽",kissing_closed_eyes:"😚",kissing_heart:"😘",kissing_smiling_eyes:"😙",kiwi_fruit:"🥝",koala:"🐨",koko:"🈁",label:"🏷",large_blue_circle:"🔵",large_blue_diamond:"🔷",large_orange_diamond:"🔶",last_quarter_moon:"🌗",last_quarter_moon_with_face:"🌜",latin_cross:"✝️",laughing:"😆",leaves:"🍃",ledger:"📒",left_luggage:"🛅",left_right_arrow:"↔️",leftwards_arrow_with_hook:"↩️",lemon:"🍋",leo:"♌️",leopard:"🐆",level_slider:"🎚",libra:"♎️",light_rail:"🚈",link:"🔗",lion:"🦁",lips:"👄",lipstick:"💄",lizard:"🦎",lock:"🔒",lock_with_ink_pen:"🔏",lollipop:"🍭",loop:"➿",loud_sound:"🔊",loudspeaker:"📢",love_hotel:"🏩",love_letter:"💌",low_brightness:"🔅",lying_face:"🤥",m:"Ⓜ️",mag:"🔍",mag_right:"🔎",mahjong:"🀄️",mailbox:"📫",mailbox_closed:"📪",mailbox_with_mail:"📬",mailbox_with_no_mail:"📭",man:"👨",man_art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e}}),x.helper.regexes={asteriskDashAndColon:/([*_:~])/g},x.helper.emojis={"+1":"👍","-1":"👎",100:"💯",1234:"🔢","1st_place_medal":"🥇","2nd_place_medal":"🥈","3rd_place_medal":"🥉","8ball":"🎱",a:"🅰️",ab:"🆎",abc:"🔤",abcd:"🔡",accept:"🉑",aerial_tramway:"🚡",airplane:"✈️",alarm_clock:"⏰",alembic:"⚗️",alien:"👽",ambulance:"🚑",amphora:"🏺",anchor:"⚓️",angel:"👼",anger:"💢",angry:"😠",anguished:"😧",ant:"🐜",apple:"🍎",aquarius:"♒️",aries:"♈️",arrow_backward:"◀️",arrow_double_down:"⏬",arrow_double_up:"⏫",arrow_down:"⬇️",arrow_down_small:"🔽",arrow_forward:"▶️",arrow_heading_down:"⤵️",arrow_heading_up:"⤴️",arrow_left:"⬅️",arrow_lower_left:"↙️",arrow_lower_right:"↘️",arrow_right:"➡️",arrow_right_hook:"↪️",arrow_up:"⬆️",arrow_up_down:"↕️",arrow_up_small:"🔼",arrow_upper_left:"↖️",arrow_upper_right:"↗️",arrows_clockwise:"🔃",arrows_counterclockwise:"🔄",art:"🎨",articulated_lorry:"🚛",artificial_satellite:"🛰",astonished:"😲",athletic_shoe:"👟",atm:"🏧",atom_symbol:"⚛️",avocado:"🥑",b:"🅱️",baby:"👶",baby_bottle:"🍼",baby_chick:"🐤",baby_symbol:"🚼",back:"🔙",bacon:"🥓",badminton:"🏸",baggage_claim:"🛄",baguette_bread:"🥖",balance_scale:"⚖️",balloon:"🎈",ballot_box:"🗳",ballot_box_with_check:"☑️",bamboo:"🎍",banana:"🍌",bangbang:"‼️",bank:"🏦",bar_chart:"📊",barber:"💈",baseball:"⚾️",basketball:"🏀",basketball_man:"⛹️",basketball_woman:"⛹️&zwj;♀️",bat:"🦇",bath:"🛀",bathtub:"🛁",battery:"🔋",beach_umbrella:"🏖",bear:"🐻",bed:"🛏",bee:"🐝",beer:"🍺",beers:"🍻",beetle:"🐞",beginner:"🔰",bell:"🔔",bellhop_bell:"🛎",bento:"🍱",biking_man:"🚴",bike:"🚲",biking_woman:"🚴&zwj;♀️",bikini:"👙",biohazard:"☣️",bird:"🐦",birthday:"🎂",black_circle:"⚫️",black_flag:"🏴",black_heart:"🖤",black_joker:"🃏",black_large_square:"⬛️",black_medium_small_square:"◾️",black_medium_square:"◼️",black_nib:"✒️",black_small_square:"▪️",black_square_button:"🔲",blonde_man:"👱",blonde_woman:"👱&zwj;♀️",blossom:"🌼",blowfish:"🐡",blue_book:"📘",blue_car:"🚙",blue_heart:"💙",blush:"😊",boar:"🐗",boat:"⛵️",bomb:"💣",book:"📖",bookmark:"🔖",bookmark_tabs:"📑",books:"📚",boom:"💥",boot:"👢",bouquet:"💐",bowing_man:"🙇",bow_and_arrow:"🏹",bowing_woman:"🙇&zwj;♀️",bowling:"🎳",boxing_glove:"🥊",boy:"👦",bread:"🍞",bride_with_veil:"👰",bridge_at_night:"🌉",briefcase:"💼",broken_heart:"💔",bug:"🐛",building_construction:"🏗",bulb:"💡",bullettrain_front:"🚅",bullettrain_side:"🚄",burrito:"🌯",bus:"🚌",business_suit_levitating:"🕴",busstop:"🚏",bust_in_silhouette:"👤",busts_in_silhouette:"👥",butterfly:"🦋",cactus:"🌵",cake:"🍰",calendar:"📆",call_me_hand:"🤙",calling:"📲",camel:"🐫",camera:"📷",camera_flash:"📸",camping:"🏕",cancer:"♋️",candle:"🕯",candy:"🍬",canoe:"🛶",capital_abcd:"🔠",capricorn:"♑️",car:"🚗",card_file_box:"🗃",card_index:"📇",card_index_dividers:"🗂",carousel_horse:"🎠",carrot:"🥕",cat:"🐱",cat2:"🐈",cd:"💿",chains:"⛓",champagne:"🍾",chart:"💹",chart_with_downwards_trend:"📉",chart_with_upwards_trend:"📈",checkered_flag:"🏁",cheese:"🧀",cherries:"🍒",cherry_blossom:"🌸",chestnut:"🌰",chicken:"🐔",children_crossing:"🚸",chipmunk:"🐿",chocolate_bar:"🍫",christmas_tree:"🎄",church:"⛪️",cinema:"🎦",circus_tent:"🎪",city_sunrise:"🌇",city_sunset:"🌆",cityscape:"🏙",cl:"🆑",clamp:"🗜",clap:"👏",clapper:"🎬",classical_building:"🏛",clinking_glasses:"🥂",clipboard:"📋",clock1:"🕐",clock10:"🕙",clock1030:"🕥",clock11:"🕚",clock1130:"🕦",clock12:"🕛",clock1230:"🕧",clock130:"🕜",clock2:"🕑",clock230:"🕝",clock3:"🕒",clock330:"🕞",clock4:"🕓",clock430:"🕟",clock5:"🕔",clock530:"🕠",clock6:"🕕",clock630:"🕡",clock7:"🕖",clock730:"🕢",clock8:"🕗",clock830:"🕣",clock9:"🕘",clock930:"🕤",closed_book:"📕",closed_lock_with_key:"🔐",closed_umbrella:"🌂",cloud:"☁️",cloud_with_lightning:"🌩",cloud_with_lightning_and_rain:"⛈",cloud_with_rain:"🌧",cloud_with_snow:"🌨",clown_face:"🤡",clubs:"♣️",cocktail:"🍸",coffee:"☕️",coffin:"⚰️",cold_sweat:"😰",comet:"☄️",computer:"💻",computer_mouse:"🖱",confetti_ball:"🎊",confounded:"😖",confused:"😕",congratulations:"㊗️",construction:"🚧",construction_worker_man:"👷",construction_worker_woman:"👷&zwj;♀️",control_knobs:"🎛",convenience_store:"🏪",cookie:"🍪",cool:"🆒",policeman:"👮",copyright:"©️",corn:"🌽",couch_and_lamp:"🛋",couple:"👫",couple_with_heart_woman_man:"💑",couple_with_heart_man_man:"👨&zwj;❤️&zwj;👨",couple_with_heart_woman_woman:"👩&zwj;❤️&zwj;👩",couplekiss_man_man:"👨&zwj;❤️&zwj;💋&zwj;👨",couplekiss_man_woman:"💏",couplekiss_woman_woman:"👩&zwj;❤️&zwj;💋&zwj;👩",cow:"🐮",cow2:"🐄",cowboy_hat_face:"🤠",crab:"🦀",crayon:"🖍",credit_card:"💳",crescent_moon:"🌙",cricket:"🏏",crocodile:"🐊",croissant:"🥐",crossed_fingers:"🤞",crossed_flags:"🎌",crossed_swords:"⚔️",crown:"👑",cry:"😢",crying_cat_face:"😿",crystal_ball:"🔮",cucumber:"🥒",cupid:"💘",curly_loop:"➰",currency_exchange:"💱",curry:"🍛",custard:"🍮",customs:"🛃",cyclone:"🌀",dagger:"🗡",dancer:"💃",dancing_women:"👯",dancing_men:"👯&zwj;♂️",dango:"🍡",dark_sunglasses:"🕶",dart:"🎯",dash:"💨",date:"📅",deciduous_tree:"🌳",deer:"🦌",department_store:"🏬",derelict_house:"🏚",desert:"🏜",desert_island:"🏝",desktop_computer:"🖥",male_detective:"🕵️",diamond_shape_with_a_dot_inside:"💠",diamonds:"♦️",disappointed:"😞",disappointed_relieved:"😥",dizzy:"💫",dizzy_face:"😵",do_not_litter:"🚯",dog:"🐶",dog2:"🐕",dollar:"💵",dolls:"🎎",dolphin:"🐬",door:"🚪",doughnut:"🍩",dove:"🕊",dragon:"🐉",dragon_face:"🐲",dress:"👗",dromedary_camel:"🐪",drooling_face:"🤤",droplet:"💧",drum:"🥁",duck:"🦆",dvd:"📀","e-mail":"📧",eagle:"🦅",ear:"👂",ear_of_rice:"🌾",earth_africa:"🌍",earth_americas:"🌎",earth_asia:"🌏",egg:"🥚",eggplant:"🍆",eight_pointed_black_star:"✴️",eight_spoked_asterisk:"✳️",electric_plug:"🔌",elephant:"🐘",email:"✉️",end:"🔚",envelope_with_arrow:"📩",euro:"💶",european_castle:"🏰",european_post_office:"🏤",evergreen_tree:"🌲",exclamation:"❗️",expressionless:"😑",eye:"👁",eye_speech_bubble:"👁&zwj;🗨",eyeglasses:"👓",eyes:"👀",face_with_head_bandage:"🤕",face_with_thermometer:"🤒",fist_oncoming:"👊",factory:"🏭",fallen_leaf:"🍂",family_man_woman_boy:"👪",family_man_boy:"👨&zwj;👦",family_man_boy_boy:"👨&zwj;👦&zwj;👦",family_man_girl:"👨&zwj;👧",family_man_girl_boy:"👨&zwj;👧&zwj;👦",family_man_girl_girl:"👨&zwj;👧&zwj;👧",family_man_man_boy:"👨&zwj;👨&zwj;👦",family_man_man_boy_boy:"👨&zwj;👨&zwj;👦&zwj;👦",family_man_man_girl:"👨&zwj;👨&zwj;👧",family_man_man_girl_boy:"👨&zwj;👨&zwj;👧&zwj;👦",family_man_man_girl_girl:"👨&zwj;👨&zwj;👧&zwj;👧",family_man_woman_boy_boy:"👨&zwj;👩&zwj;👦&zwj;👦",family_man_woman_girl:"👨&zwj;👩&zwj;👧",family_man_woman_girl_boy:"👨&zwj;👩&zwj;👧&zwj;👦",family_man_woman_girl_girl:"👨&zwj;👩&zwj;👧&zwj;👧",family_woman_boy:"👩&zwj;👦",family_woman_boy_boy:"👩&zwj;👦&zwj;👦",family_woman_girl:"👩&zwj;👧",family_woman_girl_boy:"👩&zwj;👧&zwj;👦",family_woman_girl_girl:"👩&zwj;👧&zwj;👧",family_woman_woman_boy:"👩&zwj;👩&zwj;👦",family_woman_woman_boy_boy:"👩&zwj;👩&zwj;👦&zwj;👦",family_woman_woman_girl:"👩&zwj;👩&zwj;👧",family_woman_woman_girl_boy:"👩&zwj;👩&zwj;👧&zwj;👦",family_woman_woman_girl_girl:"👩&zwj;👩&zwj;👧&zwj;👧",fast_forward:"⏩",fax:"📠",fearful:"😨",feet:"🐾",female_detective:"🕵️&zwj;♀️",ferris_wheel:"🎡",ferry:"⛴",field_hockey:"🏑",file_cabinet:"🗄",file_folder:"📁",film_projector:"📽",film_strip:"🎞",fire:"🔥",fire_engine:"🚒",fireworks:"🎆",first_quarter_moon:"🌓",first_quarter_moon_with_face:"🌛",fish:"🐟",fish_cake:"🍥",fishing_pole_and_fish:"🎣",fist_raised:"✊",fist_left:"🤛",fist_right:"🤜",flags:"🎏",flashlight:"🔦",fleur_de_lis:"⚜️",flight_arrival:"🛬",flight_departure:"🛫",floppy_disk:"💾",flower_playing_cards:"🎴",flushed:"😳",fog:"🌫",foggy:"🌁",football:"🏈",footprints:"👣",fork_and_knife:"🍴",fountain:"⛲️",fountain_pen:"🖋",four_leaf_clover:"🍀",fox_face:"🦊",framed_picture:"🖼",free:"🆓",fried_egg:"🍳",fried_shrimp:"🍤",fries:"🍟",frog:"🐸",frowning:"😦",frowning_face:"☹️",frowning_man:"🙍&zwj;♂️",frowning_woman:"🙍",middle_finger:"🖕",fuelpump:"⛽️",full_moon:"🌕",full_moon_with_face:"🌝",funeral_urn:"⚱️",game_die:"🎲",gear:"⚙️",gem:"💎",gemini:"♊️",ghost:"👻",gift:"🎁",gift_heart:"💝",girl:"👧",globe_with_meridians:"🌐",goal_net:"🥅",goat:"🐐",golf:"⛳️",golfing_man:"🏌️",golfing_woman:"🏌️&zwj;♀️",gorilla:"🦍",grapes:"🍇",green_apple:"🍏",green_book:"📗",green_heart:"💚",green_salad:"🥗",grey_exclamation:"❕",grey_question:"❔",grimacing:"😬",grin:"😁",grinning:"😀",guardsman:"💂",guardswoman:"💂&zwj;♀️",guitar:"🎸",gun:"🔫",haircut_woman:"💇",haircut_man:"💇&zwj;♂️",hamburger:"🍔",hammer:"🔨",hammer_and_pick:"⚒",hammer_and_wrench:"🛠",hamster:"🐹",hand:"✋",handbag:"👜",handshake:"🤝",hankey:"💩",hatched_chick:"🐥",hatching_chick:"🐣",headphones:"🎧",hear_no_evil:"🙉",heart:"❤️",heart_decoration:"💟",heart_eyes:"😍",heart_eyes_cat:"😻",heartbeat:"💓",heartpulse:"💗",hearts:"♥️",heavy_check_mark:"✔️",heavy_division_sign:"➗",heavy_dollar_sign:"💲",heavy_heart_exclamation:"❣️",heavy_minus_sign:"➖",heavy_multiplication_x:"✖️",heavy_plus_sign:"➕",helicopter:"🚁",herb:"🌿",hibiscus:"🌺",high_brightness:"🔆",high_heel:"👠",hocho:"🔪",hole:"🕳",honey_pot:"🍯",horse:"🐴",horse_racing:"🏇",hospital:"🏥",hot_pepper:"🌶",hotdog:"🌭",hotel:"🏨",hotsprings:"♨️",hourglass:"⌛️",hourglass_flowing_sand:"⏳",house:"🏠",house_with_garden:"🏡",houses:"🏘",hugs:"🤗",hushed:"😯",ice_cream:"🍨",ice_hockey:"🏒",ice_skate:"⛸",icecream:"🍦",id:"🆔",ideograph_advantage:"🉐",imp:"👿",inbox_tray:"📥",incoming_envelope:"📨",tipping_hand_woman:"💁",information_source:"ℹ️",innocent:"😇",interrobang:"⁉️",iphone:"📱",izakaya_lantern:"🏮",jack_o_lantern:"🎃",japan:"🗾",japanese_castle:"🏯",japanese_goblin:"👺",japanese_ogre:"👹",jeans:"👖",joy:"😂",joy_cat:"😹",joystick:"🕹",kaaba:"🕋",key:"🔑",keyboard:"⌨️",keycap_ten:"🔟",kick_scooter:"🛴",kimono:"👘",kiss:"💋",kissing:"😗",kissing_cat:"😽",kissing_closed_eyes:"😚",kissing_heart:"😘",kissing_smiling_eyes:"😙",kiwi_fruit:"🥝",koala:"🐨",koko:"🈁",label:"🏷",large_blue_circle:"🔵",large_blue_diamond:"🔷",large_orange_diamond:"🔶",last_quarter_moon:"🌗",last_quarter_moon_with_face:"🌜",latin_cross:"✝️",laughing:"😆",leaves:"🍃",ledger:"📒",left_luggage:"🛅",left_right_arrow:"↔️",leftwards_arrow_with_hook:"↩️",lemon:"🍋",leo:"♌️",leopard:"🐆",level_slider:"🎚",libra:"♎️",light_rail:"🚈",link:"🔗",lion:"🦁",lips:"👄",lipstick:"💄",lizard:"🦎",lock:"🔒",lock_with_ink_pen:"🔏",lollipop:"🍭",loop:"➿",loud_sound:"🔊",loudspeaker:"📢",love_hotel:"🏩",love_letter:"💌",low_brightness:"🔅",lying_face:"🤥",m:"Ⓜ️",mag:"🔍",mag_right:"🔎",mahjong:"🀄️",mailbox:"📫",mailbox_closed:"📪",mailbox_with_mail:"📬",mailbox_with_no_mail:"📭",man:"👨",man_art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":"- ")+x.subParser("makeMarkdown.listItem")(n[i],r),++o);return(a+="\n\x3c!-- --\x3e\n").trim()}),x.subParser("makeMarkdown.listItem",function(e,r){"use strict";for(var t="",a=e.childNodes,n=a.length,s=0;s<n;++s)t+=x.subParser("makeMarkdown.node")(a[s],r);return/\n$/.test(t)?t=t.split("\n").join("\n    ").replace(/^ {4}$/gm,"").replace(/\n\n+/g,"\n\n"):t+="\n",t}),x.subParser("makeMarkdown.node",function(e,r,t){"use strict";t=t||!1;var a="";if(3===e.nodeType)return x.subParser("makeMarkdown.txt")(e,r);if(8===e.nodeType)return"\x3c!--"+e.data+"--\x3e\n\n";if(1!==e.nodeType)return"";switch(e.tagName.toLowerCase()){case"h1":t||(a=x.subParser("makeMarkdown.header")(e,r,1)+"\n\n");break;case"h2":t||(a=x.subParser("makeMarkdown.header")(e,r,2)+"\n\n");break;case"h3":t||(a=x.subParser("makeMarkdown.header")(e,r,3)+"\n\n");break;case"h4":t||(a=x.subParser("makeMarkdown.header")(e,r,4)+"\n\n");break;case"h5":t||(a=x.subParser("makeMarkdown.header")(e,r,5)+"\n\n");break;case"h6":t||(a=x.subParser("makeMarkdown.header")(e,r,6)+"\n\n");break;case"p":t||(a=x.subParser("makeMarkdown.paragraph")(e,r)+"\n\n");break;case"blockquote":t||(a=x.subParser("makeMarkdown.blockquote")(e,r)+"\n\n");break;case"hr":t||(a=x.subParser("makeMarkdown.hr")(e,r)+"\n\n");break;case"ol":t||(a=x.subParser("makeMarkdown.list")(e,r,"ol")+"\n\n");break;case"ul":t||(a=x.subParser("makeMarkdown.list")(e,r,"ul")+"\n\n");break;case"precode":t||(a=x.subParser("makeMarkdown.codeBlock")(e,r)+"\n\n");break;case"pre":t||(a=x.subParser("makeMarkdown.pre")(e,r)+"\n\n");break;case"table":t||(a=x.subParser("makeMarkdown.table")(e,r)+"\n\n");break;case"code":a=x.subParser("makeMarkdown.codeSpan")(e,r);break;case"em":case"i":a=x.subParser("makeMarkdown.emphasis")(e,r);break;case"strong":case"b":a=x.subParser("makeMarkdown.strong")(e,r);break;case"del":a=x.subParser("makeMarkdown.strikethrough")(e,r);break;case"a":a=x.subParser("makeMarkdown.links")(e,r);break;case"img":a=x.subParser("makeMarkdown.image")(e,r);break;default:a=e.outerHTML+"\n\n"}return a}),x.subParser("makeMarkdown.paragraph",function(e,r){"use strict";var t="";if(e.hasChildNodes())for(var a=e.childNodes,n=a.length,s=0;s<n;++s)t+=x.subParser("makeMarkdown.node")(a[s],r);return t=t.trim()}),x.subParser("makeMarkdown.pre",function(e,r){"use strict";e=e.getAttribute("prenum");return"<pre>"+r.preList[e]+"</pre>"}),x.subParser("makeMarkdown.strikethrough",function(e,r){"use strict";var t="";if(e.hasChildNodes()){t+="~~";for(var a=e.childNodes,n=a.length,s=0;s<n;++s)t+=x.subParser("makeMarkdown.node")(a[s],r);t+="~~"}return t}),x.subParser("makeMarkdown.strong",function(e,r){"use strict";var t="";if(e.hasChildNodes()){t+="**";for(var a=e.childNodes,n=a.length,s=0;s<n;++s)t+=x.subParser("makeMarkdown.node")(a[s],r);t+="**"}return t}),x.subParser("makeMarkdown.table",function(e,r){"use strict";for(var t="",a=[[],[]],n=e.querySelectorAll("thead>tr>th"),s=e.querySelectorAll("tbody>tr"),o=0;o<n.length;++o){var i=x.subParser("makeMarkdown.tableCell")(n[o],r),l="---";if(n[o].hasAttribute("style"))switch(n[o].getAttribute("style").toLowerCase().replace(/\s/g,"")){case"text-align:left;":l=":---";break;case"text-align:right;":l="---:";break;case"text-align:center;":l=":---:"}a[0][o]=i.trim(),a[1][o]=l}for(o=0;o<s.length;++o)for(var c=a.push([])-1,u=s[o].getElementsByTagName("td"),d=0;d<n.length;++d){var p=" ";void 0!==u[d]&&(p=x.subParser("makeMarkdown.tableCell")(u[d],r)),a[c].push(p)}var h=3;for(o=0;o<a.length;++o)for(d=0;d<a[o].length;++d){var _=a[o][d].length;h<_&&(h=_)}for(o=0;o<a.length;++o){for(d=0;d<a[o].length;++d)1===o?":"===a[o][d].slice(-1)?a[o][d]=x.helper.padEnd(a[o][d].slice(-1),h-1,"-")+":":a[o][d]=x.helper.padEnd(a[o][d],h,"-"):a[o][d]=x.helper.padEnd(a[o][d],h);t+="| "+a[o].join(" | ")+" |\n"}return t.trim()}),x.subParser("makeMarkdown.tableCell",function(e,r){"use strict";var t="";if(!e.hasChildNodes())return"";for(var a=e.childNodes,n=a.length,s=0;s<n;++s)t+=x.subParser("makeMarkdown.node")(a[s],r,!0);return t.trim()}),x.subParser("makeMarkdown.txt",function(e){"use strict";e=e.nodeValue;return e=(e=e.replace(/ +/g," ")).replace(/¨NBSP;/g," "),e=(e=(e=(e=(e=(e=(e=(e=(e=x.helper.unescapeHTMLEntities(e)).replace(/([*_~|`])/g,"\\$1")).replace(/^(\s*)>/g,"\\$1>")).replace(/^#/gm,"\\#")).replace(/^(\s*)([-=]{3,})(\s*)$/,"$1\\$2$3")).replace(/^( {0,3}\d+)\./gm,"$1\\.")).replace(/^( {0,3})([+-])/gm,"$1\\$2")).replace(/]([\s]*)\(/g,"\\]$1\\(")).replace(/^ {0,3}\[([\S \t]*?)]:/gm,"\\[$1]:")});"function"==typeof define&&define.amd?define(function(){"use strict";return x}):"undefined"!=typeof module&&module.exports?module.exports=x:this.showdown=x}.call(this);
+//# sourceMappingURL=showdown.min.js.map

From 27bf4c5534aea824eb72b036847127345cdb7643 Mon Sep 17 00:00:00 2001
From: robyngit <thiessenbock@nceas.ucsb.edu>
Date: Thu, 19 Sep 2024 21:47:02 -0400
Subject: [PATCH 2/3] Allow iFrames from trusted sources in MarkdownView

- Add a new Showdown extension to allow iFrames from trusted sources
- Add a property in the AppModel to store the list of trusted sources
- Allow iFrames through the xss filter with limited attributes so that they can be processed by the new Showdown extension
- Add the new Showdown extension to the MarkdownView

Issue #1383
---
 .../showdown/extensions/showdown-iframes.js   | 159 ++++++++++++++++++
 .../showdown-xss-filter.js                    |   1 +
 src/js/app.js                                 |   2 +
 src/js/models/AppModel.js                     |  21 +++
 src/js/views/MarkdownView.js                  |  12 ++
 5 files changed, 195 insertions(+)
 create mode 100644 src/components/showdown/extensions/showdown-iframes.js

diff --git a/src/components/showdown/extensions/showdown-iframes.js b/src/components/showdown/extensions/showdown-iframes.js
new file mode 100644
index 000000000..4afadff09
--- /dev/null
+++ b/src/components/showdown/extensions/showdown-iframes.js
@@ -0,0 +1,159 @@
+/**
+ * SHOWDOWN IFRAMES
+ *
+ * This extension filters out iframes with src attributes that
+ * are not from a trusted source
+ */
+
+/** List of trusted URL patterns */
+const TRUSTED_SOURCES = MetacatUI.appModel.get("trustedContentSources") || [];
+
+/**
+ * The sandbox to add to iframes from trusted sources. This allows the iframe
+ * some capabilities, such as running scripts and accessing it's own origin.
+ */
+const SANDBOX = `sandbox="allow-scripts allow-same-origin"`;
+
+/**
+ * Regular expression that finds all iframes in the markdown content. The regex
+ * captures the full iframe tag, the src attribute, the inner content, and the
+ * closing tag, if it exists.
+ * @type {RegExp}
+ */
+const IFRAME_REGEX =
+  /<iframe[^>]*?\bsrc="([^"]*)"[^>]*?>([\s\S]*?)(<\/iframe>)?/g;
+
+/**
+ * Function to convert URL patterns with wildcards to regex patterns.
+ * @param {string} wildcardPattern - The URL pattern with wildcards
+ * @returns {RegExp} - The regex pattern
+ */
+function patternToRegex(wildcardPattern) {
+  // Extract protocol if specified
+  let protocol = "";
+  let pattern = wildcardPattern;
+  const protocolMatch = pattern.match(/^(https?:\/\/)/);
+  if (protocolMatch) {
+    [, protocol] = protocolMatch;
+    pattern = wildcardPattern.slice(protocol.length);
+  }
+
+  // Escape special regex characters except for '*'
+  let escapedPattern = pattern.replace(/[-/\\^$+?.()|[\]{}]/g, "\\$&");
+  // Replace '*' with '.*'
+  escapedPattern = escapedPattern.replace(/\*/g, ".*");
+  // Escape the protocol
+  const escapedProtocol = protocol.replace(/[-/\\^$+?.()|[\]{}]/g, "\\$&");
+  // Build the full regex pattern
+  const regexString = `^${escapedProtocol}${escapedPattern}$`;
+
+  return new RegExp(regexString, "i"); // Case-insensitive matching
+}
+
+/**
+ * Check if a URL is valid according to the trusted sources. Trusted sources may
+ * use wildcards (*) to match multiple URLs. For example, the trusted source
+ * "https://*dataone.org/*" will match any URL that starts with "https://",
+ * contains "dataone.org", and ends with a path. The trusted source
+ * "*arcticdata.io*" will match any URL that contains "arcticdata.io". It could
+ * also include wildcards at any position, such as
+ * "*arcticdata.io/*\/something".
+ * @param {string} url - The URL to check
+ * @returns {boolean} - True if the URL is trusted, false otherwise
+ */
+function isTrustedUrl(url) {
+  if (!TRUSTED_SOURCES?.length) return false;
+
+  try {
+    const urlObj = new URL(url);
+    if (!urlObj.protocol.startsWith("http")) {
+      return false;
+    }
+  } catch (e) {
+    return false;
+  }
+
+  // Check if the URL matches any of the trusted sources
+  for (let i = 0; i < TRUSTED_SOURCES.length; i += 1) {
+    const pattern = TRUSTED_SOURCES[i];
+    const regex = patternToRegex(pattern);
+
+    if (regex.test(url)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+/**
+ * Replace iFrames that are NOT from trusted sources with a link to the source
+ * URL. Make the iFrames from trusted sources secure by adding the 'sandbox'
+ * attribute, which restricts the iframe's capabilities. Remove any inner
+ * content from the iframe.
+ * @param {string} iframe - The full iframe tag
+ * @param {string} src - The src attribute of the iframe
+ * @param {string} _innerContent - The inner content of the iframe tag
+ * @param {string} closingTag - The closing iframe tag
+ * @param {number} _index - The index of the match
+ * @param {string} _markdown - The full markdown content
+ * @returns {string} - The secure iframe tag
+ */
+const secureIFrame = (
+  iframe,
+  src,
+  _innerContent,
+  closingTag,
+  _index,
+  _markdown,
+) => {
+  // Return as a link instead of an iframe if the source is not trusted
+  if (!isTrustedUrl(src)) {
+    return `<a href="${src}" target="_blank" rel="noopener noreferrer"><b>External Content</b>: ${src}</a>`;
+  }
+
+  // Find the position of the first '>' that ends the opening iframe tag
+  const openingTagEndIndex = iframe.indexOf(">");
+
+  // Add the 'sandbox' attr and strip out any inner content
+  if (openingTagEndIndex !== -1) {
+    // Extract the opening tag
+    let openingTag = iframe.slice(0, openingTagEndIndex);
+
+    // Ensure 'sandbox' attribute exists with the correct value
+    if (!/\bsandbox=/.test(openingTag)) {
+      // Add the 'sandbox' attribute
+      openingTag += ` ${SANDBOX}`;
+    } else {
+      // Update the existing 'sandbox' attribute to have the correct value
+      openingTag = openingTag.replace(/\bsandbox="[^"]*"/, SANDBOX);
+    }
+
+    // Close the opening tag
+    openingTag += ">";
+
+    let newIframe;
+    if (closingTag) {
+      // Reconstruct the iframe without inner content and include the closing tag
+      newIframe = `${openingTag}${closingTag}`;
+    } else {
+      // If there is no closing tag, self-close the iframe
+      newIframe = openingTag.replace(">", " />");
+    }
+
+    return newIframe;
+  }
+
+  // If the iframe tag is malformed and doesn't contain '>', return it as is
+  return iframe;
+};
+
+const extension = {
+  type: "output",
+  regex: IFRAME_REGEX,
+  replace: secureIFrame,
+};
+
+define(["showdown"], (showdown) => {
+  showdown.extension("showdown-iframes", () => [extension]);
+});
diff --git a/src/components/showdown/extensions/showdown-xss-filter/showdown-xss-filter.js b/src/components/showdown/extensions/showdown-xss-filter/showdown-xss-filter.js
index 548c2153f..e0bd30aec 100644
--- a/src/components/showdown/extensions/showdown-xss-filter/showdown-xss-filter.js
+++ b/src/components/showdown/extensions/showdown-xss-filter/showdown-xss-filter.js
@@ -12,6 +12,7 @@ define(['showdown', 'xss'], function (showdown, xss) {
     var options = {
       css: false,
       allowList: {
+        iframe: ["src", "width", "height", "frameborder", "allowfullscreen"],
         a: ["target", "href", "title", "class", "target"],
         abbr: ["title"],
         address: [],
diff --git a/src/js/app.js b/src/js/app.js
index e460fda2a..b4f75146c 100644
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -80,6 +80,8 @@ require.config({
       "/components/showdown/extensions/showdown-xss-filter/xss.min",
     showdownHtags:
       MetacatUI.root + "/components/showdown/extensions/showdown-htags",
+    showdownIframes:
+      MetacatUI.root + "/components/showdown/extensions/showdown-iframes",
     // woofmark - markdown editor
     woofmark: MetacatUI.root + "/components/woofmark.min",
     // drop zone creates drag and drop areas
diff --git a/src/js/models/AppModel.js b/src/js/models/AppModel.js
index d5af3c6c3..261d4d96c 100644
--- a/src/js/models/AppModel.js
+++ b/src/js/models/AppModel.js
@@ -1731,6 +1731,27 @@ define(["jquery", "underscore", "backbone"], function ($, _, Backbone) {
            */
           feverUrl: "",
 
+          /**
+           * A list of trusted content sources from which MetacatUI can safely
+           * embed external content. This property is used to define URLs or URL
+           * patterns that are considered secure for embedding content in
+           * iframes, especially when rendering user-generated Markdown content.
+           *
+           * Each source in the list can include wildcards (`*`) to match any
+           * subdomain or path. For example, `"https://*.dataone.org/*"` matches
+           * any subdomain of `dataone.org` over HTTPS, and `"*arcticdata.io*"`
+           * matches any URL containing `arcticdata.io`.
+           *
+           * Set to an empty array or a falsy value to disable all embedded content.
+           *
+           * @type {string[]}
+           * @since 0.0.0
+           */
+          trustedContentSources: [
+            "https://www.youtube.com/embed/*",
+            "https://player.vimeo.com/video/*",
+          ],
+
           /** If true, then archived content is available in the search index.
            * Set to false if this MetacatUI is using a Metacat version before 2.10.0
            * @type {boolean}
diff --git a/src/js/views/MarkdownView.js b/src/js/views/MarkdownView.js
index 46860bb2b..8e24b5863 100644
--- a/src/js/views/MarkdownView.js
+++ b/src/js/views/MarkdownView.js
@@ -179,6 +179,7 @@ define([
           "footnotes",
           "showdown-citation",
           "showdown-images",
+          "showdown-iframes",
         ];
 
         var numTestsTodo = SDextensions.length;
@@ -219,6 +220,8 @@ define([
           regexCitation = /\[@.+\]/;
         // test for any <h.> tags
         (regexHtags = new RegExp("#\\s")), (regexImages = /!\[.*\]\(\S+\)/);
+        // test for anything that looks like an iframe. Keep it very general.
+        const regexIframes = /<iframe.*?src="(.*?)"(.*?)><\/iframe>/g;
 
         // ================================================================
         // Test for and load each as required each showdown extension
@@ -342,6 +345,15 @@ define([
         } else {
           updateExtensionList("showdown-images", (required = false));
         }
+
+        // --- Test for iframes --- //
+        if (regexIframes.test(markdown)) {
+          require(["showdownIframes"], function (showdownIframes) {
+            updateExtensionList("showdown-iframes", (required = true));
+          });
+        } else {
+          updateExtensionList("showdown-iframes", (required = false));
+        }
       },
 
       /**

From 4fd47d500f278c2ff173881b20fe43f3dc75d537 Mon Sep 17 00:00:00 2001
From: robyngit <thiessenbock@nceas.ucsb.edu>
Date: Mon, 30 Sep 2024 16:29:10 -0400
Subject: [PATCH 3/3] Update default & theme trustedContentSources

Issue #1383
---
 src/js/models/AppModel.js       | 5 +----
 src/js/themes/arctic/config.js  | 6 ++++++
 src/js/themes/dataone/config.js | 8 ++++++++
 src/js/themes/knb/config.js     | 7 +++++++
 4 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/src/js/models/AppModel.js b/src/js/models/AppModel.js
index 261d4d96c..77e9c108c 100644
--- a/src/js/models/AppModel.js
+++ b/src/js/models/AppModel.js
@@ -1747,10 +1747,7 @@ define(["jquery", "underscore", "backbone"], function ($, _, Backbone) {
            * @type {string[]}
            * @since 0.0.0
            */
-          trustedContentSources: [
-            "https://www.youtube.com/embed/*",
-            "https://player.vimeo.com/video/*",
-          ],
+          trustedContentSources: [],
 
           /** If true, then archived content is available in the search index.
            * Set to false if this MetacatUI is using a Metacat version before 2.10.0
diff --git a/src/js/themes/arctic/config.js b/src/js/themes/arctic/config.js
index 481c88b26..7b8b231fb 100644
--- a/src/js/themes/arctic/config.js
+++ b/src/js/themes/arctic/config.js
@@ -260,6 +260,12 @@ MetacatUI.AppConfig = Object.assign(
 
     //Google Analytics
     googleAnalyticsKey: "G-12EKQM14SH",
+
+    // iFrames in portals
+    trustedContentSources: [
+      "https://*arcticdata.io",
+      "https://cosima.nceas.ucsb.edu*",
+    ],
   },
   MetacatUI.AppConfig || {},
 );
diff --git a/src/js/themes/dataone/config.js b/src/js/themes/dataone/config.js
index 6ad97caab..3d1a8c24a 100644
--- a/src/js/themes/dataone/config.js
+++ b/src/js/themes/dataone/config.js
@@ -155,6 +155,14 @@ MetacatUI.AppConfig = Object.assign(
     displayDatasetEditButton: false,
     displayDatasetControls: false,
     displayDatasetQualityMetric: true,
+
+    // iFrames in portals
+    trustedContentSources: [
+      "https://*ecoinformatics.org*",
+      "https://*arcticdata.io",
+      "https://cosima.nceas.ucsb.edu*",
+      "https://sasap-data.shinyapps.io/board_of_fisheries/",
+    ],
   },
   MetacatUI.AppConfig || {},
 );
diff --git a/src/js/themes/knb/config.js b/src/js/themes/knb/config.js
index 241f0cc6f..bf4b72767 100644
--- a/src/js/themes/knb/config.js
+++ b/src/js/themes/knb/config.js
@@ -89,6 +89,13 @@ MetacatUI.AppConfig = Object.assign(
     limitPortalsToSubjects: ["CN=knb-data-admins,DC=dataone,DC=org"],
     portalEditNotAuthCreateMessage:
       "Creating new portals is a feature currently only available to a select group of Beta testers. You should still be able to access your existing portals. Please contact us with any questions at the email address below.",
+
+    // iFrames in portals
+    trustedContentSources: [
+      "https://*ecoinformatics.org*",
+      "https://cosima.nceas.ucsb.edu*",
+      "https://sasap-data.shinyapps.io/board_of_fisheries/",
+    ],
   },
   MetacatUI.AppConfig,
 );