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magic-comment-magic.pdf
Koichi ITO
July 18, 2019
Programming
1
310
magic-comment-magic.pdf
平成.rb #6 (
https://heiseirb.connpass.com/event/138210/
)
Koichi ITO
July 18, 2019
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Transcript
-PT"OHFMFT
-PT"OHFMFT
-PT"OHFMFT ⏰⚡ 5JNFPVU
*GJUEPFTOPUUJNFEPVU
8FE Magic comment magic ,PJDIJ*50&4. JOD 3VCZ$POG 5IF.JMMFOOJVN#JMUNPSF-PT"OHFMFT My
memorial RuboCop’s issue 2018
5IV Magic comment magic ,PJDIJ*50&4. JOD )FJTFJSC 4IJCVZB +BQBO
My memorial RuboCop’s issue 2018 Reiwa edition
!LPJD w *DPNFGSPN5PLZP +BQBO w *`NXPSLJOHJO&4. JOD w 3VCP$PQDPNNJUUFS w
"30SBDMFFOIBODFE BEBQUFSDPNNJUUFS w 3VCZ,BJHJTQFBLFS w 3VCZ,BJHJ-5FS
"TJNJMBSOPUBUJPOT Ӭ &JXB4ZTUFN.BOBHFNFOU *OD ྩ 3FJXB
"TJNJMBSOPUBUJPOT Ӭ &JXB4ZTUFN.BOBHFNFOU *OD /eiwa/i.match?('Eiwa') #=> true ྩ 3FJXB
"TJNJMBSOPUBUJPOT Ӭ &JXB4ZTUFN.BOBHFNFOU *OD /eiwa/i.match?('Eiwa') #=> true ྩ 3FJXB /eiwa/i.match?('Reiwa')
#=> true
*DPNFGSPNFJXB
044
Support coexistence with OSS community
None
5IJTJTUIF3VCP$PQDPOUSJCVUPSTSBOLJOHUIJTZFBS
5IJTJTUIF3VCP$PQDPOUSJCVUPSTSBOLJOHUIJTZFBS *U`TNF
*XJMMUBMLBCPVU lNBHJDDPNNFOUz XJUI3VCP$PQ UIJTQSFTFOUBUJPO
3VCZIBTUXPNBKPS NBHJDDPNNFOUGFBUVSFT
3VCZIBTUXPNBKPS NBHJDDPNNFOUGFBUVSFT w&ODPEJOHNBHJD DPNNFOU
3VCZIBTUXPNBKPS NBHJDDPNNFOUGFBUVSFT w&ODPEJOHNBHJD DPNNFOU w'SP[FOTUSJOHMJUFSBM NBHJDDPNNFOU
&ODPEJOHNBHJDDPNNFOU # encoding: 'utf-8' # encoding: 'ascii'
&ODPEJOHNBHJDDPNNFOU w5IJTNBHJDDPNNFOUNBLFTpMF FODPEJOHTQFDJpFECZFODPEJOH w*OUSPEVDFEGSPN3VCZ w4DSJQUFODPEJOHJT65'CZ EFGBVMUGSPN3VCZ w5IVTUIJTNBHJDDPNNFOUJT VOOFFEFEBMNPTUDBTFTDVSSFOUMZ
# frozen_string_literal: true # frozen_string_literal: false 'SP[FOTUSJOHNBHJDDPNNFOU
'SP[FOTUSJOHNBHJDDPNNFOU w5IJTNBHJDDPNNFOUNBLFTGSP[FO TUSJOHMJUFSBMXIFUIFSPSOPU w*OUSPEVDFEGSPN3VCZ w3VCZPO3BJMTGSBNFXPSLDPEFT JOUSPEVDFEJUGSPN3BJMT w0OUIFPUIFSIBOE3BJMT HFOFSBUPSTEPFTOPUJODMVEFEJU
5IFSFJTBDPQ SFMBUFEUPUIFTF NBHJDDPNNFOUT
SVCPDPQIRSVCPDPQ 'FBUVSF3FRVFTU8BSOJOWBMJEMPDBUJPOPG DPEJOHQSBHNB
5IJTJTBGFBUVSFSFRVFTUUP3VCP$PQ
SVCPDPQIRSVCPDPQ <'JY>"EEOFXA-JOU0SEFSFE.BHJD$PNNFOUTADPQ
5IJTQVMMSFRVFTUIBTJNQMFNFOUFEUIFGFBUVSF
"CPVUGFBUVSF w5IJTDPQDIFDLTDPEJOH NBHJDDPNNFOUTIPVMECF pSTUMJOF PSOFYUPGTIFCBOH
"CPVUGFBUVSF w5IJTDPQDIFDLTDPEJOH NBHJDDPNNFOUTIPVMECF pSTUMJOF PSOFYUPGTIFCBOH w5IFOFYUTMJEFFYBNQMF FYQFDUFEUPGSP[FOTUSJOH BOE65'FODPEJOH
#BEPSEFS # frozen_string_literal: true # encoding: ascii p [''.frozen?, ''.encoding]
#=> [true, #<Encoding:UTF-8>] *UFYQFDUFE"4$**FODPEJOHCVUBDUVBMMZ65'FODPEJOH
(PPEPSEFS # encoding: ascii # frozen_string_literal: true p [''.frozen?, ''.encoding]
#=> [true, #<Encoding:US-ASCII>]
(PPEPSEFS #!/usr/bin/env ruby # encoding: ascii # frozen_string_literal: true p
[''.frozen?, ''.encoding] #=> [true, #<Encoding:US-ASCII>]
1SFWJPVTMZ UIJTDPQIBE BQSPCMFN
SVCPDPQIRSVCPDPQ -JOU0SEFSFE.BHJD$PNNFOUTSFQPSUTBUMJOFJTOPU BNBHJDDPNNFOU
*UXBTBCVHSFQPSUGSPNNZ3VCZGSJFOE
5IJTJTBWBMJEDPEF # frozen_string_literal: true x = { encoding: Encoding::SJIS }
puts x
"OPGGFOTFPG 3VCP$PQPDDVST # frozen_string_literal: true x = { encoding: Encoding::SJIS
} puts x test.rb:3:1: W: Lint/ OrderedMagicComments: The encoding magic comment should precede all other magic comments.
SVCPDPQIRSVCPDPQ <'JY>'JYBGBMTFQPTJUJWFGPS A-JOU0SEFSFE.BHJD$PNNFOUTA
*PQFOFEBQVMMSFRVFTUUPpYJU
5IJTJTUIFDPSFPGUIF QBUDI
5IFSFXBTBGBMTFQPTJUJWF UPNJTVOEFSTUBOEJOHUIF )BTIOPUBUJPOBTBO FODPEJOHNBHJDDPNNFOU
"TJNJMBSOPUBUJPOT
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii )BTI x = { encoding:
Encoding::SJIS }
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii )BTI x = { encoding:
Encoding::SJIS } ^^^^^^^^^^^^^^^^^^^^^^^^
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii ^^^^^^^^^^^^^^^ )BTI x = {
encoding: Encoding::SJIS } ^^^^^^^^^^^^^^^^^^^^^^^^
"TJNJMBSOPUBUJPOT # encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
"TJNJMBSOPUBUJPOT encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
)PXEPZPVMPPLTUIJT encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
5IJTQBUDIDIBOHFTUIF QBUUFSONBUDIPGUIF FODPEJOHNBHJDDPNNFOU UIBUCFHJOOJOHPGMJOF BMXBZTTUBSUTXJUIAA
5IFNBHJDDPNNFOUMJOF BMXBZTTUBSUTXJUIAA encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
5IFNBHJDDPNNFOUMJOF BMXBZTTUBSUTXJUIAA # encoding: ascii ^^^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
5IJTXBTBGVOOZCVH
4P ZPVDBOPQFO BOJTTVFPSB13 BMXBZT JGZPVpOEBCVHPS BOJTTVF
:PVSJTTVFNBZCF BOZPOFTJTTVF
4FFZPVTPDJBMDPEJOH DPNNVOJUZXPSME XJUI3VCZ
l /PXBZUPMJNJUPVS HPBMT8FMMpOEB SFBTPOUPCFMJFWF 'BDJOH/PWB&SB /PWB&SB
koic
iwatatomoya
takahirom
bkuhlmann
n_makoto
afilina
kentatada
makicamel
guikingone
po3rin
rivuchk
peacock0803sz
lauravandoore
jonrohan
afnizarnur
philhawksworth
eitanlees
brianwarren
erikaheidi
chriscoyier
pedronauck
skipperchong
michaelherold
samanthasiow
![#BEPSEFS # frozen_string_literal: true # encoding: ascii p [''.frozen?, ''.encoding]](https://files.speakerdeck.com/presentations/c245edd4944940df9ee7cc9f46d954b9/slide_31.jpg){kind=link}
![(PPEPSEFS # encoding: ascii # frozen_string_literal: true p [''.frozen?, ''.encoding]](https://files.speakerdeck.com/presentations/c245edd4944940df9ee7cc9f46d954b9/slide_32.jpg){kind=link}
