̈ (Basic Text must not start with a non-starter

This file contains invalid Basic Text.

Ill-formed encodings are replaced by U+FFFD.
 - 
 - 
 - 
 - 
 - 
 - 
 - 
 - 
 - 
 - 

Many scalar values are simply replaced by U+FFFD, such as ৤৤৥੤੥૤૥୤୥௤௥౤౥೤೥൤൥⁲⁳.
And 〈〉𝑕𝒝𝒠𝒡𝒣𝒤𝒧𝒨𝒭𝒺𝒼𝓄𝔆𝔋𝔌𝔕𝔝𝔺𝔿𝕅𝕇𝕈𝕉𝕑.

Some characters have specific replacements such as Ω, K, Å, ﬀ, ﬁ, ﬂ, ﬃ, ﬄ, ﬅ, and ﬆ.

CJK Compatibility Ideographs are canonicalized using Variation Sequences:

嬈嬨嬾嬾宅寃寘寧寧寧寮寳寿将尢尿屠屢層履屮屮岍峀崙嵃嵐嵫嵮嵼嶲嶺巡巢巽帨帽幩年度
庰庳庶廉廊廊廒廓廙廬廾弄弢弢当形彩彫律徚復徭忍志念忹怒怜恵悁悔悔惇惘惡愈慄慈慌慌
慎慎慠慨慺憎憎憎憐憤憯憲懞懲懲懲懶懶戀成戛戮戴扝抱拉拏拓拔拼拾挽捐捨捻掃掠掩揄揅
揤搜搢摒摩摷摾撚撝擄敏敏敖敬數料旅既旣易晉晴晴暈暑暑暜暴曆更書最朗朗朗望望朡李杓
杖杞杻枅林柳柺栗栟桒梁梅梅梎梨椔楂榣槪樂樂樂樓檨櫓櫛欄次歔歲歷歹殟殮殺殺殺殻汎汧
沈沿泌泍泥洖洛洞洴派流流流浩浪海海浸涅淋淚淪淹渚港湮溜溺滇滋滋滑滛漏漢漢漣潮濆濫
濾瀛瀞瀞瀹灊灰灷災炙炭烈烙煅煉煮煮熜燎燐爐爛爨爫爵爵牐牢犀犕犯狀狼猪猪獵獺率率王
玥玲珞理琉琢瑇瑜瑩瑱瑱璅璉璘瓊甆甤画甾留略異異痢瘐瘝瘟療癩益益盛盧直直省眞真真着
睊睊瞋瞧硎硫碌碌碑磊磌磌磻礪礼社祈祉祐祖祖祝神祥祿禍禎福福禮秊秫稜穀穀穊穏突窱立
竮笠節節篆築簾籠类粒精糒糖糣糧糨紀紐索累絛絣綠綾緇練練練縂縉縷繁繅缾署罹罺羅羕羚
羽翺老者者者聆聠聯聰聾肋肭育脃脾臘臨臭舁舁舄舘良艹艹芋芑芝花芳芽若若苦茝茣茶荒荓
荣莭莽菉菊菌菜菧華菱落葉著著蓮蓱蓳蓼蔖蕤藍藺蘆蘒蘭蘿虐虜虜虧虩蚈蚩蛢蜎蜨蝫蝹蝹螆
螺蟡蠁蠟行衠衣裂裏裗裞裡裸裺褐襁襤覆見視視誠說說調請諒論諭諭諸諸諾諾謁謁謹謹識讀
變變豈豕貫賁賂賈賓贈贈贛起趼跋路跰車軔輦輪輸輸輻轢辞辰辶連逸逸遲遼邏邔郎郞郱都鄑
鄛酪醙醴里量金鈴鈸鉶鉼鋗鋘錄鍊鏹鐕開閭閷阮陋降陵陸陼隆隣隷隸雃離難難零雷霣露靈靖
靖韛韠響響頋頋頋領頩頻頻類飢飯飼館餩馧駂駱駾驪鬒鬒魯鱀鱗鳽鵧鶴鷺鸞鹿麗麟麻黎黹黾
鼅鼏鼖鼻齃龍龎龜龜龜𠄢𠔜𠔥𠕋𠘺𠠄𠣞𠨬𠭣𡓤𡚨𡛪𡧈𡬘𡴋𡷤𡷦𢆃𢆟𢌱𢌱𢛔𢡄𢡊𢬌𢯱𣀊𣊸𣍟𣎓
𣎜𣏃𣏕𣑭𣚣𣢧𣪍𣫺𣲼𣴞𣻑𣽞𣾎𤉣𤋮𤎫𤘈𤜵𤠔𤰶𤲒𤾡𤾸𥁄𥃲𥃳𥄙𥄳𥉉𥐝𥘦𥚚𥛅𥥼𥪧𥪧𥮫𥲀𥳐𥾆
𦇚𦈨𦉇𦋙𦌾𦓚𦔣𦖨𦞧𦞵𦬼𦰶𦳕𦵫𦼬𦾱𧃒𧏊𧙧𧢮𧥦𧲨𧻓𧼯𨗒𨗭𨜮𨯺𨵷𩅅𩇟𩈚𩐊𩒖𩖶𩬰𪃎𪄅𪈎𪊑
𪎒𪘀

For the rest, NFC normalization is applied:
 - Å
 - Å̈̇
 - ·

Z̛̖̗̘̙̜̝̞̀́̂̃̄̅̆̇̉̈̊̋̌̍̎̏̐̑̒̓̔̕̚a̴̵̶̷̸̡̢̧̨̟̠̣̤̥̦̩̪̫̬̭̮̯̰̱̲̳̹̺̻̼̽l͇͈͉͍͎͓͔͕͖͙͚̾̿͂͆͊͋͌͐͑͒͗͛͘͜͟͝͞͠͡ͅg𞀀𞀁𞀂𞀄𞀃𞀅𞀆𞀈𞀉𞀊𞀋𞀌𞀍𞀎𞀏𞀐𞀑𞀒𞀓𞀔𞀕𞀖𞀗𞀘𞀛𞀜𞀝𞀞𞀟𞀠𞀡oࣔࣕࣖࣗࣘࣙࣚࣛࣜࣝࣞࣟ࣠࣡ࣤࣥࣧࣨ࣪࣫࣬ࣳࣴࣵࣷࣸࣻࣼࣽࣾࣿ beyond Stream-Safe limits is broken up with CGJ.

Stream-Safe is applied before NFC:
 - A뮤$꣤<꣄꣄꣄꣄꣄꣄꣄꣄꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤꣤Z

Most control codes are replaced:
 -  

 - 
 - 
 - 

Formfeed is replaced by whitespace.

Newlines are canonicalized:
 - NEL isreplaced
 - Plain CR is translated to NL
 - CRLF is translated to NL
 - LS and PS  are replaced by whitespace.

Bare escape codes are replaced:
 - 
 - 

While escape sequences are removed:
 - [m
 - [[A
 - ]hello world

Noncharacters are replaced:
 - ﷐﷑﷒﷓﷔﷕﷖﷗﷘﷙﷚﷛﷜﷝﷞﷟﷠﷡﷢﷣﷤﷥﷦﷧﷨﷩﷪﷫﷬﷭﷮﷯￹￺￻￼￾￿
 - 🿾🿿𯿾𯿿𿿾𿿿񏿾񏿿񟿾񟿿񯿾񯿿񿿾񿿿򏿾򏿿򟿾򟿿򯿾򯿿򿿾򿿿󏿾󏿿󟿾󟿿󯿾󯿿󿿾󿿿􏿾􏿿

Deprecated and discouraged values are replaced:
 - ŉٳAཷAཹឣឤ  Aⷵ𑇄

And BOM﻿s are replaced with plain non-breaking whitespace.

(Basic Text must not end with a ZWJ, and must have a trailing newline).‍