如何在一长行中每 3 个字符后创建一个换行符？

Question

我想将下面一行分成 1000 行，每行 3 个字母：

saahaalaasabaaboabsabyaceactaddadoadsadzaffaftagaageagoagsahaahiahsaidailaimainairaisaitalaalbaleallalpalsaltamaamiampamuanaandaneaniantanyapeapoappaptarbarcarearfarkarmarsartashaskaspassateattaukavaaveavoawaaweawlawnaxeayeaysazobaabadbagbahbalbambanbapbarbasbatbaybedbeebegbelbenbesbetbeybibbidbigbinbiobisbitbizboabobbodbogboobopbosbotbowboxboybrabrobrrbubbudbugbumbunburbusbutbuybyebyscabcadcamcancapcarcatcawcayceecelcepchicigciscobcodcogcolconcoocopcorcoscotcowcoxcoycozcrucrycubcudcuecumcupcurcutcwmdabdaddagdahdakdaldamdandapdawdaydebdeedefdeldendevdewdexdeydibdiddiedifdigdimdindipdisditdocdoedogdoldomdondordosdotdowdrydubdudduedugduhduidunduodupdyeeareateauebbecuedhedseekeeleffefsefteggegoekeeldelfelkellelmelsemeemsemuendengenseoneraereergernerrersessetaetheveeweeyefabfadfagfanfarfasfatfaxfayfedfeefehfemfenferfesfetfeufewfeyfezfibfidfiefigfilfinfirfitfixfizfluflyfobfoefogfohfonfopforfoufoxfoyfrofryfubfudfugfunfurgabgadgaegaggalgamgangapgargasgatgaygedgeegelgemgengetgeyghigibgidgiegig gingipgitgnugoagobgodgoogorgosgotgoxgoygulgumgungutguvguygymgyphadhaehaghahhajhamhaohaphashathawhayhehhemhenhepherheshethewhexheyhichidhiehimhinhiphishithmmhobhodhoehoghonhophoshothowhoyhubhuehughuhhumhunhuphuthypiceichickicyidsiffifsiggilkillimpinkinninsionireirkismitsivyjabjagjamjarjawjayjeejetjeujewjibjigjinjobjoejogjotjowjoyjugjunjusjutkabkaekafkaskatkaykeakefkegkenkepkexkeykhikidkifkinkipkirkiskitkoakobkoikopkorkoskuekyelablacladlaglamlaplarlaslatlavlawlaxlaylealedleelegleileklesletleulevlexleylezliblidlielinliplislitlobloglooloplotlowloxluglumluvluxlyemacmadmaemagmanmapmarmasmatmawmaxmaymedmegmelmemmenmetmewmhomibmicmidmigmilmimmirmismixmoamobmocmodmogmolmommonmoomopmormosmotmowmudmugmummunmusmutmycnabnaenagnahnamnannapnawnaynebneenegnetnewnibnilnimnipnitnixnobnodnognohnomnoonornosnotnownthnubnunnusnutoafoakoaroatobaobeobiocaodaoddodeodsoesoffoftohmohoohsoilokaokeoldoleomsoneonoonsoohootopeopsoptoraorborcoreorsortoseoudouroutovaoweowlownoxooxypacpadpahpalpampanpapparpaspatpawpaxp aypeapecpedpeepegpehpenpepperpespetpewphiphtpiapicpiepigpinpippispitpiupixplypodpohpoipolpompoopoppotpowpoxproprypsipstpubpudpugpulpunpuppurpusputpyapyepyxqatqisquaradragrahrairajramranraprasratrawraxrayrebrecredreerefregreiremrepresretrevrexrhoriaribridrifrigrimrinriprobrocrodroeromrotrowrubruerugrumrunrutryaryesabsacsadsaesagsalsapsatsausawsaxsayseasecseesegseiselsensersetsewsexshasheshhshysibsicsimsinsipsirsissitsixskaskiskyslysobsodsolsomsonsopsossotsousowsoxsoyspaspysristysubsuesuksumsunsupsuqsyntabtadtaetagtajtamtantaotaptartastattautavtawtaxteatedteetegteltentettewthethothytictietiltintiptistittodtoetogtomtontootoptortottowtoytrytsktubtugtuituntuptuttuxtwatwotyeudoughukeuluummumpunsupoupsurburdurnurpuseutauteutsvacvanvarvasvatvauvavvawveevegvetvexviavidvievigvimvisvoevowvoxvugvumwabwadwaewagwanwapwarwaswatwawwaxwaywebwedweewenwetwhawhowhywigwinwiswitwizwoewogwokwonwoowopwoswotwowwrywudwyewynxisyagyahyakyamyapyaryawyayyeayehyenyepyesyetyewyidyinyipyobyodyokyomyonyouyowyukyumyupza gzapzaszaxzedzeezekzepzigzinzipzitzoazoozuzzzz

请告诉我如何处理它。

Answer 1

这个正则表达式，

.{3}\K

替换为：

\n

可能只是这样做。

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如果您想探索/简化/修改它，this demo 的右上方面板上会解释该表达式。

Answer 2

在正则表达式模式下尝试以下查找和替换：

Find:    (...)(?=.)
Replace: $1\r\n

Demo

模式(...)(?=.) 一次匹配并捕获任意三个字母。然后，我们用这三个字母 ($1) 替换，然后是一个中断（我使用 \r\n，Windows 行结尾；如果你在 Linux 上使用 \n）。请注意，仅当找到的三个字母 不是 字符串中的最后三个字母时，该模式才会匹配。积极的前瞻 (?=.) 避免在末尾添加不需要的中断。