Special characters in Regular Expressions

[ForbesLindesay]

new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]')

Becomes:

RegExp("[ªµºÀ-ÖØ-öø-Ë�ˆ-Ë‘Ë -ˤˬˮͰ-ʹͶͷͺ-ͽΆΈ-ΊΌΎ-ΡΣ-ϵϷ-Ò�ÒŠ-Ô§Ô±-Õ–Õ™Õ¡-Ö‡×�-תװ-×²Ø -يٮٯٱ-Û“Û•Û¥Û¦Û®Û¯Ûº-Û¼Û¿Ü�Ü’-ܯÝ�-ޥޱߊ-ßªß´ßµßºà €-à •à šà ¤à ¨à¡€-ࡘࢠࢢ-ࢬऄ-हऽà¥�क़-ॡॱ-ॷॹ-ॿঅ-ঌà¦�à¦�ও-নপ-রলশ-হঽৎড়à§�য়-ৡৰৱਅ-ਊà¨�à¨�ਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹਖ਼-ੜਫ਼ੲ-ੴઅ-àª�àª�-ઑઓ-નપ-રલળવ-હઽà«�ૠૡଅ-ଌà¬�à¬�ଓ-ନପ-ରଲଳଵ-ହଽଡ଼à­�à­Ÿ-ୡୱஃஅ-ஊஎ-à®�à®’-கஙசஜஞடணதந-பம-ஹà¯�à°…-ఌఎ-à°�à°’-నప-ళవ-హఽౘౙౠౡಅ-ಌಎ-à²�ಒ-ನಪ-ಳವ-ಹಽೞೠೡೱೲഅ-ഌഎ-à´�à´’-ഺഽൎൠൡൺ-ൿඅ-ඖක-නඳ-රලව-à·†à¸�-ะาำเ-ๆàº�ຂຄງຈຊàº�ດ-ທນ-ຟມ-ຣລວສຫອ-ະາຳຽເ-ໄໆໜ-ໟༀཀ-ཇཉ-ཬྈ-ྌက-ဪဿá��-á�•á�š-á��á�¡á�¥á�¦á�®-á�°á�µ-á‚�á‚Žá‚ -ჅჇáƒ�áƒ�-ჺჼ-ቈቊ-á‰�á‰�-ቖቘቚ-á‰�በ-ኈኊ-áŠ�áŠ�-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-áŒ�ጒ-ጕጘ-á�šáŽ€-áŽ�Ꭰ-á�´á��-ᙬᙯ-ᙿáš�-áššáš -ᛪᛮ-ᛰᜀ-ᜌᜎ-ᜑᜠ-ᜱá�€-á�‘á� -á�¬á�®-á�°áž€-áž³áŸ—áŸœá  -ᡷᢀ-ᢨᢪᢰ-ᣵᤀ-ᤜá¥�-ᥭᥰ-ᥴᦀ-ᦫá§�-ᧇᨀ-ᨖᨠ-ᩔᪧᬅ-ᬳᭅ-ᭋᮃ-ᮠᮮᮯᮺ-ᯥᰀ-á°£á±�-á±�ᱚ-ᱽᳩ-ᳬᳮ-ᳱᳵᳶᴀ-ᶿḀ-ἕἘ-á¼�á¼ -ὅὈ-á½�á½�-ὗὙὛá½�Ὗ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-á¿Œá¿�-á¿“á¿–-Ίῠ-Ῥῲ-ῴῶ-ῼâ�±â�¿â‚�-ₜℂℇℊ-â„“â„•â„™-â„�ℤΩℨK-ℭℯ-ℹℼ-â„¿â……-â…‰â…Žâ… -ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳮⳲⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯⶀ-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-â·Žâ·�-â·–â·˜-ⷞⸯ々-〇〡-〩〱-〵〸-〼ã��-ã‚–ã‚�-ã‚Ÿã‚¡-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿã�€-䶵一-鿌ꀀ-ê’Œê“�-ꓽꔀ-ꘌê˜�-ꘟꘪꘫꙀ-ꙮꙿ-êš—êš -ꛯꜗ-ꜟꜢ-ꞈꞋ-ꞎêž�-êž“êž -Ɦꟸ-ê �ê ƒ-ê …ê ‡-ê Šê Œ-ê ¢ê¡€-ꡳꢂ-ꢳꣲ-ꣷꣻꤊ-ꤥꤰ-ê¥†ê¥ -ꥼꦄ-ꦲê§�ꨀ-ꨨꩀ-ê©‚ê©„-ê©‹ê© -ꩶꩺꪀ-ꪯꪱꪵꪶꪹ-ꪽꫀꫂꫛ-ê«�ê« -ꫪꫲ-ê«´ê¬�-ꬆꬉ-ꬎꬑ-ê¬–ê¬ -ꬦꬨ-ꬮꯀ-ꯢ가-힣ힰ-ퟆퟋ-ퟻ豈-ï©­ï©°-龎ff-stﬓ-ﬗï¬�ײַ-ﬨשׁ-זּטּ-לּמּנּï­�ףּפּצּ-ﮱﯓ-ï´½ïµ�-ï¶�ﶒ-ﷇﷰ-ﷻﹰ-ﹴﹶ-ﻼＡ-Ｚï½�-ｚｦ-ﾾￂ-ￇￊ-ï¿�ï¿’-ï¿—ï¿š-ï¿œ]"),NonAsciiIdentifierPart: RegExp("[ªµºÀ-ÖØ-öø-Ë�ˆ-Ë‘Ë -ˤˬˮ̀-ʹͶͷͺ-ͽΆΈ-ΊΌΎ-ΡΣ-ϵϷ-Ò�Òƒ-Ò‡ÒŠ-Ô§Ô±-Õ–Õ™Õ¡-Ö‡Ö‘-Ö½Ö¿×�ׇׂׅׄ×�-תװ-ײØ�-ØšØ -٩ٮ-Û“Û•-ۜ۟-Û¨Ûª-Û¼Û¿Ü�-ÝŠÝ�-ޱ߀-ßµßºà €-à ­à¡€-࡛ࢠࢢ-ࢬࣤ-ࣾऀ-ॣ०-९ॱ-ॷॹ-ॿà¦�-ঃঅ-ঌà¦�à¦�ও-নপ-রলশ-হ়-ৄেৈো-ৎৗড়à§�য়-ৣ০-ৱà¨�-ਃਅ-ਊà¨�à¨�ਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹ਼ਾ-ੂੇੈੋ-à©�à©‘à©™-ੜਫ਼੦-ੵàª�-ઃઅ-àª�àª�-ઑઓ-નપ-રલળવ-હ઼-ૅે-ૉો-à«�à«�à« -ૣ૦-૯à¬�-ଃଅ-ଌà¬�à¬�ଓ-ନପ-ରଲଳଵ-ହ଼-ୄେୈୋ-à­�à­–à­—à­œà­�à­Ÿ-ୣ୦-୯ୱஂஃஅ-ஊஎ-à®�à®’-கஙசஜஞடணதந-பம-ஹா-ூெ-ைொ-à¯�à¯�ௗ௦-௯à°�-ఃఅ-ఌఎ-à°�à°’-నప-ళవ-హఽ-ౄె-ైొ-à±�ౕౖౘౙౠ-ౣ౦-౯ಂಃಅ-ಌಎ-à²�ಒ-ನಪ-ಳವ-ಹ಼-ೄೆ-ೈೊ-à³�ೕೖೞೠ-ೣ೦-೯ೱೲംഃഅ-ഌഎ-à´�à´’-ഺഽ-ൄെ-ൈൊ-ൎൗൠ-ൣ൦-൯ൺ-ൿංඃඅ-ඖක-නඳ-රලව-ෆ්à·�-ුූෘ-ෟෲෳà¸�-ฺเ-๎à¹�-๙àº�ຂຄງຈຊàº�ດ-ທນ-ຟມ-ຣລວສຫອ-ູົ-ຽເ-ໄໆ່-à»�à»�-໙ໜ-ໟༀ༘༙༠-༩༹༵༷༾-ཇཉ-ཬཱ-྄྆-ྗྙ-ྼ࿆က-á�‰á��-á‚�á‚ -ჅჇáƒ�áƒ�-ჺჼ-ቈቊ-á‰�á‰�-ቖቘቚ-á‰�በ-ኈኊ-áŠ�áŠ�-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-áŒ�ጒ-ጕጘ-á�šá��-á�ŸáŽ€-áŽ�Ꭰ-á�´á��-ᙬᙯ-ᙿáš�-áššáš -ᛪᛮ-ᛰᜀ-ᜌᜎ-᜔ᜠ-᜴á�€-á�“á� -á�¬á�®-á�°á�²á�³áž€-៓ៗៜáŸ�០-áŸ©á ‹-á �á �-á ™á  -ᡷᢀ-ᢪᢰ-ᣵᤀ-ᤜᤠ-ᤫᤰ-᤻᥆-ᥭᥰ-ᥴᦀ-ᦫᦰ-ᧉá§�-᧙ᨀ-ᨛᨠ-á©žá© -᩿᩼-᪉áª�-᪙ᪧᬀ-á­‹á­�-᭙᭫-᭳ᮀ-᯳ᰀ-á°·á±€-᱉á±�-á±½á³�-á³’á³”-ᳶᴀ-ᷦ᷼-ἕἘ-á¼�á¼ -ὅὈ-á½�á½�-ὗὙὛá½�Ὗ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-á¿Œá¿�-á¿“á¿–-Ίῠ-Ῥῲ-ῴῶ-ῼ‌â€�‿â�€â�”â�±â�¿â‚�-â‚œâƒ�-⃥⃜⃡-⃰ℂℇℊ-â„“â„•â„™-â„�ℤΩℨK-ℭℯ-ℹℼ-â„¿â……-â…‰â…Žâ… -ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯ⵿-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-â·Žâ·�-â·–â·˜-â·žâ· -ⷿⸯ々-〇〡-〯〱-〵〸-〼ã��-ゖ゙゚ã‚�-ã‚Ÿã‚¡-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿã�€-䶵一-鿌ꀀ-ê’Œê“�-ꓽꔀ-ꘌê˜�-ꘫꙀ-꙯ꙴ-꙽ꙿ-ꚗꚟ-꛱ꜗ-ꜟꜢ-ꞈꞋ-ꞎêž�-êž“êž -Ɦꟸ-ê §ê¡€-ꡳꢀ-꣄ê£�-ê£™ê£ -ꣷꣻ꤀-꤭ꤰ-ê¥“ê¥ -ꥼꦀ-꧀ê§�-꧙ꨀ-ꨶꩀ-ê©�ê©�-ê©™ê© -ꩶꩺꩻꪀ-ê«‚ê«›-ê«�ê« -ꫯꫲ-꫶ê¬�-ꬆꬉ-ꬎꬑ-ê¬–ê¬ -ꬦꬨ-ꬮꯀ-ꯪ꯬꯭꯰-꯹가-힣ힰ-ퟆퟋ-ퟻ豈-ï©­ï©°-龎ff-stﬓ-ﬗï¬�-ﬨשׁ-זּטּ-לּמּנּï­�ףּפּצּ-ﮱﯓ-ï´½ïµ�-ï¶�ﶒ-ﷇﷰ-ﷻ︀-ï¸�ï¸ -︦︳︴ï¹�-ï¹�ï¹°-ﹴﹶ-ﻼï¼�-９Ａ-Ｚ＿ï½�-ｚｦ-ﾾￂ-ￇￊ-ï¿�ï¿’-ï¿—ï¿š-ï¿œ]")

This is breaking my application and resulting in a SyntaxError.

[papandreou]

UglifyJS is unescaping the chars, which is perfectly legal and takes up less space. I get this output:

new RegExp("[ªµºÀ-ÖØ-öø-ˁˆ-ˑˠ-ˤˬˮͰ-ʹͶͷͺ-ͽΆΈ-ΊΌΎ-ΡΣ-ϵϷ-ҁҊ-ԧԱ-Ֆՙա-ևא-תװ-ײؠ-يٮٯٱ-ۓەۥۦۮۯۺ-ۼۿܐܒ-ܯݍ-ޥޱߊ-ߪߴߵߺࠀ-ࠕࠚࠤࠨࡀ-ࡘࢠࢢ-ࢬऄ-हऽॐक़-ॡॱ-ॷॹ-ॿঅ-ঌএঐও-নপ-রলশ-হঽৎড়ঢ়য়-ৡৰৱਅ-ਊਏਐਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹਖ਼-ੜਫ਼ੲ-ੴઅ-ઍએ-ઑઓ-નપ-રલળવ-હઽૐૠૡଅ-ଌଏଐଓ-ନପ-ରଲଳଵ-ହଽଡ଼ଢ଼ୟ-ୡୱஃஅ-ஊஎ-ஐஒ-கஙசஜஞடணதந-பம-ஹௐఅ-ఌఎ-ఐఒ-నప-ళవ-హఽౘౙౠౡಅ-ಌಎ-ಐಒ-ನಪ-ಳವ-ಹಽೞೠೡೱೲഅ-ഌഎ-ഐഒ-ഺഽൎൠൡൺ-ൿඅ-ඖක-නඳ-රලව-ෆก-ะาำเ-ๆກຂຄງຈຊຍດ-ທນ-ຟມ-ຣລວສຫອ-ະາຳຽເ-ໄໆໜ-ໟༀཀ-ཇཉ-ཬྈ-ྌက-ဪဿၐ-ၕၚ-ၝၡၥၦၮ-ၰၵ-ႁႎႠ-ჅჇჍა-ჺჼ-ቈቊ-ቍቐ-ቖቘቚ-ቝበ-ኈኊ-ኍነ-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-ጐጒ-ጕጘ-ፚᎀ-ᎏᎠ-Ᏼᐁ-ᙬᙯ-ᙿᚁ-ᚚᚠ-ᛪᛮ-ᛰᜀ-ᜌᜎ-ᜑᜠ-ᜱᝀ-ᝑᝠ-ᝬᝮ-ᝰក-ឳៗៜᠠ-ᡷᢀ-ᢨᢪᢰ-ᣵᤀ-ᤜᥐ-ᥭᥰ-ᥴᦀ-ᦫᧁ-ᧇᨀ-ᨖᨠ-ᩔᪧᬅ-ᬳᭅ-ᭋᮃ-ᮠᮮᮯᮺ-ᯥᰀ-ᰣᱍ-ᱏᱚ-ᱽᳩ-ᳬᳮ-ᳱᳵᳶᴀ-ᶿḀ-ἕἘ-Ἕἠ-ὅὈ-Ὅὐ-ὗὙὛὝὟ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-ῌῐ-ΐῖ-Ίῠ-Ῥῲ-ῴῶ-ῼⁱⁿₐ-ₜℂℇℊ-ℓℕℙ-ℝℤΩℨK-ℭℯ-ℹℼ-ℿⅅ-ⅉⅎⅠ-ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳮⳲⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯⶀ-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖⷘ-ⷞⸯ々-〇〡-〩〱-〵〸-〼ぁ-ゖゝ-ゟァ-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿ㐀-䶵一-鿌ꀀ-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘟꘪꘫꙀ-ꙮꙿ-ꚗꚠ-ꛯꜗ-ꜟꜢ-ꞈꞋ-ꞎꞐ-ꞓꞠ-Ɦꟸ-ꠁꠃ-ꠅꠇ-ꠊꠌ-ꠢꡀ-ꡳꢂ-ꢳꣲ-ꣷꣻꤊ-ꤥꤰ-ꥆꥠ-ꥼꦄ-ꦲꧏꨀ-ꨨꩀ-ꩂꩄ-ꩋꩠ-ꩶꩺꪀ-ꪯꪱꪵꪶꪹ-ꪽꫀꫂꫛ-ꫝꫠ-ꫪꫲ-ꫴꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮꯀ-ꯢ가-힣ힰ-ퟆퟋ-ퟻ豈-舘並-龎ff-stﬓ-ﬗיִײַ-ﬨשׁ-זּטּ-לּמּנּסּףּפּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-ﷻﹰ-ﹴﹶ-ﻼＡ-Ｚａ-ｚｦ-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ]");

Note that the output of uglifyjs is UTF-8. The output you're quoting looks like UTF-8 interpreted as iso-8859-1. Are you maybe serving the compressed files with a non-UTF8 charset?

[papandreou]

There's also a --beautify ascii_only=true command line option that would keep those chars escaped in the output. I don't know whether it can be turned on without also turning on beautification.

[mishoo]

I don't know whether it can be turned on without also turning on beautification.

It can, pass -b ascii_only=true,beautify=false.

Indeed, looks like a server misconfiguration, so I'm closing this.

[ForbesLindesay]

Thanks for the advice, I had forgotten to add <meta charset="utf8"/> to my html pages header. Thanks @mishoo & @papandreou. As ever, UglifyJS is an indispensable part of my tool-set :)