would you settle for GNU awk supporting /[0-9A-Z_a-zªµ·ºÀ-ÖØ-ö ø-ˁˆ-ˑˠ-ˤˬˮ̀-ʹͶͷͺ-ͽͿΆ-Ί ΌΎ-ΡΣ-ϵϷ-ҁ҃-҇Ҋ-ԯԱ-Ֆՙՠ-ֈ֑-ׇֽֿׁׂׅׄ א-תׯ-ײؐ-ؚؠ-٩ٮ-ۓە-ۜ۟-۪ۨ-ۼ ۿܐ-݊ݍ-ޱ߀-ߵߺ߽ࠀ-࠭ࡀ-࡛ࡠ-ࡪ ࡰ-ࢇࢉ-ࢎ࢘-ࣣ࣡-ॣ०-९ॱ-ঃঅ-ঌ এঐও-নপ-রলশ-হ়-ৄেৈো-ৎৗ ড়ঢ়য়-ৣ০-ৱৼ৾ਁ-ਃਅ-ਊਏਐਓ-ਨ ਪ-ਰਲਲ਼ਵਸ਼ਸਹ਼ਾ-ੂੇੈੋ-੍ੑਖ਼-ੜ ਫ਼੦-ੵઁ-ઃઅ-ઍએ-ઑઓ-નપ-રલળ વ-હ઼-ૅે-ૉો-્ૐૠ-ૣ૦-૯ૹ-૿ଁ-ଃ ଅ-ଌଏଐଓ-ନପ-ରଲଳଵ-ହ଼-ୄେୈୋ-୍୕-ୗ ଡ଼ଢ଼ୟ-ୣ୦-୯ୱஂஃஅ-ஊஎ-ஐஒ-கங சஜஞடணதந-பம-ஹா-ூெ-ைொ-் ௐௗ௦-௯ఀ-ఌఎ-ఐఒ-నప-హ఼-ౄె-ైొ-్ౕౖ ౘ-ౚౝౠ-ౣ౦-౯ಀ-ಃಅ-ಌಎ-ಐಒ-ನ ಪ-ಳವ-ಹ಼-ೄೆ-ೈೊ-್ೕೖೝೞೠ-ೣ ೦-೯ೱೲഀ-ഌഎ-ഐഒ-ൄെ-ൈൊ-ൎൔ-ൗ ൟ-ൣ൦-൯ൺ-ൿඁ-ඃඅ-ඖක-නඳ-ර ලව-ෆ්ා-ුූෘ-ෟ෦-෯ෲෳก-ฺเ-๎ ๐-๙ກຂຄຆ-ຊຌ-ຣລວ-ຽເ-ໄໆ່-ໍ ໐-໙ໜ-ໟༀ༘༙༠-༩༹༵༷༾-ཇཉ-ཬཱ-྄྆-ྗྙ-ྼ࿆ က-၉ၐ-ႝႠ-ჅჇჍა-ჺჼ-ቈቊ-ቍቐ-ቖ ቘቚ-ቝበ-ኈኊ-ኍነ-ኰኲ-ኵኸ-ኾዀዂ-ዅ ወ-ዖዘ-ጐጒ-ጕጘ-ፚ፝-፟፩-፱ᎀ-ᎏ Ꭰ-Ᏽᏸ-ᏽᐁ-ᙬᙯ-ᙿᚁ-ᚚᚠ-ᛪᛮ-ᛸ ᜀ-᜕ᜟ-᜴ᝀ-ᝓᝠ-ᝬᝮ-ᝰᝲᝳក-៓ៗ ៜ៝០-៩᠐-᠙ᠠ-ᡸᢀ-ᢪᢰ-ᣵᤀ-ᤞᤠ-ᤫᤰ-᤻ ᥆-ᥭᥰ-ᥴᦀ-ᦫᦰ-ᧉ᧐-᧚ᨀ-ᨛᨠ-ᩞ᩠-᩿᩼-᪉ ᪐-᪙ᪧ᪰-᪽ᪿ-ᫎᬀ-ᭌ᭐-᭙᭫-᭳ᮀ-᯳ ᰀ-᰷᱀-᱉ᱍ-ᱽᲀ-ᲈᲐ-ᲺᲽ-Ჿ᳐-᳔᳒-ᳺ ᴀ-ἕἘ-Ἕἠ-ὅὈ-Ὅὐ-ὗὙὛὝὟ-ώ ᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-ῌῐ-ΐῖ-Ίῠ-Ῥ ῲ-ῴῶ-ῼ‿⁀⁔ⁱⁿₐ-ₜ⃐-⃥⃜⃡-⃰ ℂℇℊ-ℓℕ℘-ℝℤΩℨK-ℹℼ-ℿⅅ-ⅉ ⅎⅠ-ↈⰀ-ⳤⳫ-ⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯ⵿-ⶖ ⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖ ⷘ-ⷞⷠ-ⷿ々-〇〡-〯〱-〵〸-〼ぁ-ゖ゙-ゟ ァ-ヺー-ヿㄅ-ㄯㄱ-ㆎㆠ-ㆿㇰ-ㇿ㐀-䶿 一-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘫꙀ-꙯ꙴ-꙽ꙿ-꛱ ꜗ-ꜟꜢ-ꞈꞋ-ꟊꟐꟑꟓꟕ-ꟙꟲ-ꠧ꠬ꡀ-ꡳꢀ-ꣅ ꣐-꣙꣠-ꣷꣻꣽ-꤭ꤰ-꥓ꥠ-ꥼꦀ-꧀ꧏ-꧙ ꧠ-ꧾꨀ-ꨶꩀ-ꩍ꩐-꩙ꩠ-ꩶꩺ-ꫂꫛ-ꫝ ꫠ-ꫯꫲ-꫶ꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮ ꬰ-ꭚꭜ-ꭩꭰ-ꯪ꯬꯭꯰-꯹가-힣ힰ-ퟆퟋ-ퟻ 豈-舘並-龎ff-stﬓ-ﬗיִ-ﬨשׁ-זּטּ-לּ מּנּסּףּפּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-ﷻ︠-︯ ︳︴﹍-﹏ﹰ-ﹴﹶ-ﻼ０-９Ａ-Ｚ＿ａ-ｚ ｦ-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ𐀀-𐀋𐀍-𐀦 𐀨-𐀺𐀼𐀽𐀿-𐁍𐁐-𐁝𐂀-𐃺𐅀-𐅴𐇽𐊀-𐊜 𐊠-𐋐𐋠𐌀-𐌟𐌭-𐍊𐍐-𐍺𐎀-𐎝𐎠-𐏃𐏈-𐏏 𐏑-𐏕𐐀-𐒝𐒠-𐒩𐒰-𐓓𐓘-𐓻𐔀-𐔧𐔰-𐕣 𐕰-𐕺𐕼-𐖊𐖌-𐖒𐖔𐖕𐖗-𐖡𐖣-𐖱𐖳-𐖹𐖻 𐖼𐘀-𐜶𐝀-𐝕𐝠-𐝧𐞀-𐞅𐞇-𐞰𐞲-𐞺𐠀-𐠅 𐠈𐠊-𐠵𐠷𐠸𐠼𐠿-𐡕𐡠-𐡶𐢀-𐢞𐣠-𐣲𐣴𐣵 𐤀-𐤕𐤠-𐤹𐦀-𐦷𐦾𐦿𐨀-𐨃𐨅𐨆𐨌-𐨓𐨕-𐨗 𐨙-𐨵𐨸-𐨿𐨺𐩠-𐩼𐪀-𐪜𐫀-𐫇𐫉-𐫦𐬀-𐬵 𐭀-𐭕𐭠-𐭲𐮀-𐮑𐰀-𐱈𐲀-𐲲𐳀-𐳲𐴀-𐴧 𐴰-𐴹𐺀-𐺩𐺫𐺬𐺰𐺱𐼀-𐼜𐼧𐼰-𐽐𐽰-𐾅𐾰-𐿄 𐿠-𐿶𑀀-𑁆𑁦-𑁵𑁿-𑂺𑃂𑃐-𑃨𑃰-𑃹𑄀-𑄴 𑄶-𑄿𑅄-𑅇𑅐-𑅳𑅶𑆀-𑇄𑇉-𑇌𑇎-𑇚𑇜𑈀-𑈑 𑈓-𑈷𑈾𑊀-𑊆𑊈𑊊-𑊍𑊏-𑊝𑊟-𑊨𑊰-𑋪𑋰-𑋹𑌀-𑌃 𑌅-𑌌𑌏𑌐𑌓-𑌨𑌪-𑌰𑌲𑌳𑌵-𑌹𑌻-𑍄𑍇𑍈𑍋-𑍍 𑍐𑍗𑍝-𑍣𑍦-𑍬𑍰-𑍴𑐀-𑑊𑑐-𑑙𑑞-𑑡𑒀-𑓅 𑓇𑓐-𑓙𑖀-𑖵𑖸-𑗀𑗘-𑗝𑘀-𑙀𑙄𑙐-𑙙𑚀-𑚸 𑛀-𑛉𑜀-𑜚𑜝-𑜫𑜰-𑜹𑝀-𑝆𑠀-𑠺𑢠-𑣩 𑣿-𑤆𑤉𑤌-𑤓𑤕𑤖𑤘-𑤵𑤷𑤸𑤻-𑥃𑥐-𑥙𑦠-𑦧 𑦪-𑧗𑧚-𑧡𑧣𑧤𑨀-𑨾𑩇𑩐-𑪙𑪝𑪰-𑫸𑰀-𑰈 𑰊-𑰶𑰸-𑱀𑱐-𑱙𑱲-𑲏𑲒-𑲧𑲩-𑲶𑴀-𑴆 𑴈𑴉𑴋-𑴶𑴺𑴼𑴽𑴿-𑵇𑵐-𑵙𑵠-𑵥𑵧𑵨𑵪-𑶎𑶐𑶑𑶓-𑶘 𑶠-𑶩𑻠-𑻶𑾰𒀀-𒎙𒐀-𒑮𒒀-𒕃𒾐-𒿰𓀀-𓐮 𔐀-𔙆𖠀-𖨸𖩀-𖩞𖩠-𖩩𖩰-𖪾𖫀-𖫉𖫐-𖫭𖫰-𖫴 𖬀-𖬶𖭀-𖭃𖭐-𖭙𖭣-𖭷𖭽-𖮏𖹀-𖹿𖼀-𖽊𖽏-𖾇𖾏-𖾟 𖿠𖿡𖿣𖿤𖿰𖿱𗀀-𘟷𘠀-𘳕𘴀-𘴈𚿰-𚿳𚿵-𚿻 𚿽𚿾𛀀-𛄢𛅐-𛅒𛅤-𛅧𛅰-𛋻𛰀-𛱪𛱰-𛱼𛲀-𛲈 𛲐-𛲙𛲝𛲞𜼀-𜼭𜼰-𜽆𝅥-𝅩𝅭-𝅲𝅻-𝆂𝆅-𝆋𝆪-𝆭𝉂-𝉄 𝐀-𝑔𝑖-𝒜𝒞𝒟𝒢𝒥𝒦𝒩-𝒬𝒮-𝒹𝒻𝒽-𝓃 𝓅-𝔅𝔇-𝔊𝔍-𝔔𝔖-𝔜𝔞-𝔹𝔻-𝔾𝕀-𝕄 𝕆𝕊-𝕐𝕒-𝚥𝚨-𝛀𝛂-𝛚𝛜-𝛺𝛼-𝜔𝜖-𝜴 𝜶-𝝎𝝐-𝝮𝝰-𝞈𝞊-𝞨𝞪-𝟂𝟄-𝟋𝟎-𝟿𝨀-𝨶𝨻-𝩬𝩵𝪄𝪛-𝪟𝪡-𝪯 𝼀-𝼞𞀀-𞀆𞀈-𞀘𞀛-𞀡𞀣𞀤𞀦-𞀪𞄀-𞄬𞄰-𞄽 𞅀-𞅉𞅎𞊐-𞊮𞋀-𞋹𞟠-𞟦𞟨-𞟫𞟭𞟮𞟰-𞟾 𞠀-𞣄𞣐-𞣖𞤀-𞥋𞥐-𞥙𞸀-𞸃𞸅-𞸟𞸡𞸢𞸤 𞸧𞸩-𞸲𞸴-𞸷𞸹𞸻𞹂𞹇𞹉𞹋𞹍-𞹏𞹑𞹒𞹔𞹗𞹙 𞹛𞹝𞹟𞹡𞹢𞹤𞹧-𞹪𞹬-𞹲𞹴-𞹷𞹹-𞹼𞹾𞺀-𞺉 𞺋-𞺛𞺡-𞺣𞺥-𞺩𞺫-𞺻🯰-🯹𠀀-𪛟𪜀-𫜸 𫝀-𫠝𫠠-𬺡𬺰-𮯠丽-𪘀𰀀-𱍊]/?

(pattern extracted from https://util.unicode.org/UnicodeJsps/list-unicodeset.jsp?a=%5B%5B%3AID_Continue%3A%5D%26%5B%3AVariation_Selector%3DNo%3A%5D%5D&g=&i= , which is technically incorrect because it excludes variation selectors but is otherwise good)