1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
|
" Vim syntax file
" Language: Ruby
" Maintainer: Doug Kearns <dougkearns@gmail.com>
" URL: https://github.com/vim-ruby/vim-ruby
" Release Coordinator: Doug Kearns <dougkearns@gmail.com>
" Last Change: 2019 Jul 13
" ----------------------------------------------------------------------------
"
" Previous Maintainer: Mirko Nasato
" Thanks to perl.vim authors, and to Reimer Behrends. :-) (MN)
" ----------------------------------------------------------------------------
" Prelude {{{1
if exists("b:current_syntax")
finish
endif
" this file uses line continuations
let s:cpo_sav = &cpo
set cpo&vim
" eRuby Config {{{1
if exists('main_syntax') && main_syntax == 'eruby'
let b:ruby_no_expensive = 1
endif
" Folding Config {{{1
if has("folding") && exists("ruby_fold")
setlocal foldmethod=syntax
endif
let s:foldable_groups = split(
\ get(
\ b:,
\ 'ruby_foldable_groups',
\ get(g:, 'ruby_foldable_groups', 'ALL')
\ )
\ )
function! s:foldable(...) abort
if index(s:foldable_groups, 'NONE') > -1
return 0
endif
if index(s:foldable_groups, 'ALL') > -1
return 1
endif
for l:i in a:000
if index(s:foldable_groups, l:i) > -1
return 1
endif
endfor
return 0
endfunction
function! s:run_syntax_fold(args) abort
let [_0, _1, groups, cmd; _] = matchlist(a:args, '\(["'']\)\(.\{-}\)\1\s\+\(.*\)')
if call('s:foldable', split(groups))
let cmd .= ' fold'
endif
exe cmd
endfunction
com! -nargs=* SynFold call s:run_syntax_fold(<q-args>)
" Not-Top Cluster {{{1
syn cluster rubyNotTop contains=@rubyCommentNotTop,@rubyStringNotTop,@rubyRegexpSpecial,@rubyDeclaration,@rubyExceptionHandler,@rubyClassOperator,rubyConditional,rubyModuleName,rubyClassName,rubySymbolDelimiter,rubyParentheses
" Whitespace Errors {{{1
if exists("ruby_space_errors")
if !exists("ruby_no_trail_space_error")
syn match rubySpaceError display excludenl "\s\+$"
endif
if !exists("ruby_no_tab_space_error")
syn match rubySpaceError display " \+\t"me=e-1
endif
endif
" Operators {{{1
syn match rubyEnglishBooleanOperator "\<\%(and\|or\|not\)\>"
if exists("ruby_operators") || exists("ruby_pseudo_operators")
syn match rubyDotOperator "\.\|&\."
syn match rubyTernaryOperator "\%(\w\|[^\x00-\x7F]\)\@1<!?\|:"
syn match rubyArithmeticOperator "\*\*\|[*/%+]\|->\@!"
syn match rubyComparisonOperator "<=>\|<=\|<\|>=\|[-=]\@1<!>"
syn match rubyBitwiseOperator "[~^|]\|&\.\@!\|<<\|>>"
syn match rubyBooleanOperator "\%(\w\|[^\x00-\x7F]\)\@1<!!\|&&\|||"
syn match rubyRangeOperator "\.\.\.\="
syn match rubyAssignmentOperator "=>\@!\|-=\|/=\|\*\*=\|\*=\|&&=\|&=\|||=\||=\|%=\|+=\|>>=\|<<=\|\^="
syn match rubyAssignmentOperator "=>\@!" containedin=rubyBlockParameterList " TODO: this is inelegant
syn match rubyEqualityOperator "===\|==\|!=\|!\~\|=\~"
syn region rubyBracketOperator matchgroup=rubyOperator start="\%(\%(\w\|[^\x00-\x7F]\)[?!]\=\|[]})]\)\@2<=\[" end="]" contains=ALLBUT,@rubyNotTop
syn match rubyScopeOperator "::"
syn match rubySuperClassOperator "<" contained
syn match rubyEigenClassOperator "<<" contained
syn match rubyLambdaOperator "->"
syn match rubySplatOperator "\%([[{(|,=]\_s*\)\@<=\*"
syn match rubySplatOperator "\%(^\|\s\)\@1<=\*\%(\h\|[^\x00-\x7F]\|[:$@[]\)\@="
syn match rubyDoubleSplatOperator "\%([{(|,]\_s*\)\@<=\*\*"
syn match rubyDoubleSplatOperator "\s\@1<=\*\*\%(\h\|[^\x00-\x7F]\|[:$@{]\)\@="
syn match rubyProcOperator "\%([[(|,]\_s*\)\@<=&"
syn match rubyProcOperator "\s\@1<=&\%(\h\|[^\x00-\x7F]\|[:$@]\|->\)\@="
syn cluster rubyProperOperator contains=rubyTernaryOperator,rubyArithmeticOperator,rubyComparisonOperator,rubyBitwiseOperator,rubyBooleanOperator,rubyRangeOperator,rubyAssignmentOperator,rubyEqualityOperator,rubyDefinedOperator,rubyEnglishBooleanOperator
syn cluster rubyClassOperator contains=rubyEigenClassOperator,rubySuperClassOperator
syn cluster rubyPseudoOperator contains=rubyDotOperator,rubyScopeOperator,rubyEigenClassOperator,rubySuperClassOperator,rubyLambdaOperator,rubySplatOperator,rubyDoubleSplatOperator,rubyProcOperator
syn cluster rubyOperator contains=ruby.*Operator
endif
" String Interpolation and Backslash Notation {{{1
syn region rubyInterpolation matchgroup=rubyInterpolationDelimiter start="#{" end="}" contained contains=ALLBUT,@rubyNotTop
syn match rubyInterpolation "#\$\%(-\w\|[!$&"'*+,./0:;<>?@\`~_]\|\w\+\)" display contained contains=rubyInterpolationDelimiter,@rubyGlobalVariable
syn match rubyInterpolation "#@@\=\w\+" display contained contains=rubyInterpolationDelimiter,rubyInstanceVariable,rubyClassVariable
syn match rubyInterpolationDelimiter "#\ze[$@]" display contained
syn match rubyStringEscape "\\\_." contained display
syn match rubyStringEscape "\\\o\{1,3}\|\\x\x\{1,2}" contained display
syn match rubyStringEscape "\\u\%(\x\{4}\|{\x\{1,6}\%(\s\+\x\{1,6}\)*}\)" contained display
syn match rubyStringEscape "\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\\=.\)" contained display
syn match rubyBackslashEscape "\\\\" contained display
syn match rubyQuoteEscape "\\'" contained display
syn match rubySpaceEscape "\\ " contained display
syn match rubyParenthesisEscape "\\[()]" contained display
syn match rubyCurlyBraceEscape "\\[{}]" contained display
syn match rubyAngleBracketEscape "\\[<>]" contained display
syn match rubySquareBracketEscape "\\[[\]]" contained display
syn region rubyNestedParentheses start="(" skip="\\\\\|\\)" matchgroup=rubyString end=")" transparent contained
syn region rubyNestedCurlyBraces start="{" skip="\\\\\|\\}" matchgroup=rubyString end="}" transparent contained
syn region rubyNestedAngleBrackets start="<" skip="\\\\\|\\>" matchgroup=rubyString end=">" transparent contained
syn region rubyNestedSquareBrackets start="\[" skip="\\\\\|\\\]" matchgroup=rubyString end="\]" transparent contained
syn cluster rubySingleCharEscape contains=rubyBackslashEscape,rubyQuoteEscape,rubySpaceEscape,rubyParenthesisEscape,rubyCurlyBraceEscape,rubyAngleBracketEscape,rubySquareBracketEscape
syn cluster rubyNestedBrackets contains=rubyNested.\+
syn cluster rubyStringSpecial contains=rubyInterpolation,rubyStringEscape
syn cluster rubyStringNotTop contains=@rubyStringSpecial,@rubyNestedBrackets,@rubySingleCharEscape
" Regular Expression Metacharacters {{{1
syn region rubyRegexpComment matchgroup=rubyRegexpSpecial start="(?#" skip="\\\\\|\\)" end=")" contained
syn region rubyRegexpParens matchgroup=rubyRegexpSpecial start="(\(?:\|?<\=[=!]\|?>\|?<[a-z_]\w*>\|?[imx]*-[imx]*:\=\|\%(?#\)\@!\)" skip="\\\\\|\\)" end=")" contained transparent contains=@rubyRegexpSpecial
syn region rubyRegexpBrackets matchgroup=rubyRegexpCharClass start="\[\^\=" skip="\\\\\|\\\]" end="\]" contained transparent contains=rubyRegexpBrackets,rubyStringEscape,rubyRegexpEscape,rubyRegexpCharClass,rubyRegexpIntersection oneline
syn match rubyRegexpCharClass "\\[DdHhRSsWw]" contained display
syn match rubyRegexpCharClass "\[:\^\=\%(alnum\|alpha\|ascii\|blank\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|word\|xdigit\):\]" contained
syn match rubyRegexpCharClass "\\[pP]{^\=.\{-}}" contained display
syn match rubyRegexpEscape "\\[].*?+^$|\\/(){}[]" contained " see commit e477f10
syn match rubyRegexpQuantifier "[*?+][?+]\=" contained display
syn match rubyRegexpQuantifier "{\d\+\%(,\d*\)\=}?\=" contained display
syn match rubyRegexpAnchor "[$^]\|\\[ABbGZz]" contained display
syn match rubyRegexpDot "\.\|\\X" contained display
syn match rubyRegexpIntersection "&&" contained display
syn match rubyRegexpSpecial "\\K" contained display
syn match rubyRegexpSpecial "|" contained display
syn match rubyRegexpSpecial "\\[1-9]\d\=\d\@!" contained display
syn match rubyRegexpSpecial "\\k<\%([a-z_]\w*\|-\=\d\+\)\%([+-]\d\+\)\=>" contained display
syn match rubyRegexpSpecial "\\k'\%([a-z_]\w*\|-\=\d\+\)\%([+-]\d\+\)\='" contained display
syn match rubyRegexpSpecial "\\g<\%([a-z_]\w*\|-\=\d\+\)>" contained display
syn match rubyRegexpSpecial "\\g'\%([a-z_]\w*\|-\=\d\+\)'" contained display
syn cluster rubyRegexpSpecial contains=@rubyStringSpecial,rubyRegexpSpecial,rubyRegexpEscape,rubyRegexpBrackets,rubyRegexpCharClass,rubyRegexpDot,rubyRegexpQuantifier,rubyRegexpAnchor,rubyRegexpParens,rubyRegexpComment,rubyRegexpIntersection
" Numbers {{{1
syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<0[xX]\x\+\%(_\x\+\)*r\=i\=\>" display
syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<\%(0[dD]\)\=\%(0\|[1-9]\d*\%(_\d\+\)*\)r\=i\=\>" display
syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<0[oO]\=\o\+\%(_\o\+\)*r\=i\=\>" display
syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<0[bB][01]\+\%(_[01]\+\)*r\=i\=\>" display
syn match rubyFloat "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\.\d\+\%(_\d\+\)*r\=i\=\>" display
syn match rubyFloat "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\%(\.\d\+\%(_\d\+\)*\)\=\%([eE][-+]\=\d\+\%(_\d\+\)*\)i\=\>" display
" Identifiers {{{1
syn match rubyClassName "\%(\%(^\|[^.]\)\.\s*\)\@<!\<[[:upper:]]\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@!" contained
syn match rubyModuleName "\%(\%(^\|[^.]\)\.\s*\)\@<!\<[[:upper:]]\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@!" contained
syn match rubyConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<[[:upper:]]\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@!"
syn match rubyClassVariable "@@\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" display
syn match rubyInstanceVariable "@\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" display
syn match rubyGlobalVariable "$\%(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\|-.\)"
syn match rubySymbolDelimiter ":" contained
syn match rubySymbol "[]})\"':]\@1<!:\%(\^\|\~@\|\~\|<<\|<=>\|<=\|<\|===\|[=!]=\|[=!]\~\|!@\|!\|>>\|>=\|>\||\|-@\|-\|/\|\[]=\|\[]\|\*\*\|\*\|&\|%\|+@\|+\|`\)" contains=rubySymbolDelimiter
syn match rubySymbol "[]})\"':]\@1<!:\$\%(-.\|[`~<=>_,;:!?/.'"@$*\&+0]\)" contains=rubySymbolDelimiter
syn match rubySymbol "[]})\"':]\@1<!:\%(\$\|@@\=\)\=\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" contains=rubySymbolDelimiter
syn match rubySymbol "[]})\"':]\@1<!:\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\%([?!=]>\@!\)\=" contains=rubySymbolDelimiter
SynFold ':' syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:'" end="'" skip="\\\\\|\\'" contains=rubyQuoteEscape,rubyBackslashEscape
SynFold ':' syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:\"" end="\"" skip="\\\\\|\\\"" contains=@rubyStringSpecial
syn match rubyCapitalizedMethod "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\u\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@="
syn region rubyParentheses start="(" end=")" contains=ALLBUT,@rubyNotTop containedin=rubyBlockParameterList
syn region rubyBlockParameterList start="\%(\%(\<do\>\|{\)\_s*\)\@32<=|" end="|" contains=ALLBUT,@rubyNotTop,@rubyProperOperator
if exists('ruby_global_variable_error')
syn match rubyGlobalVariableError "$[^A-Za-z_]" display
syn match rubyGlobalVariableError "$-[^0FIKWadilpvw]" display
endif
syn match rubyPredefinedVariable #$[!$&"'*+,./0:;<>?@\`~]#
syn match rubyPredefinedVariable "$\d\+" display
syn match rubyPredefinedVariable "$_\>" display
syn match rubyPredefinedVariable "$-[0FIWadilpvw]\>" display
syn match rubyPredefinedVariable "$\%(stderr\|stdin\|stdout\)\>" display
syn match rubyPredefinedVariable "$\%(DEBUG\|FILENAME\|LOADED_FEATURES\|LOAD_PATH\|PROGRAM_NAME\|SAFE\|VERBOSE\)\>" display
syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\%(ARGF\|ARGV\|ENV\|DATA\|STDERR\|STDIN\|STDOUT\|TOPLEVEL_BINDING\)\>\%(\s*(\)\@!"
syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\%(RUBY_\%(VERSION\|RELEASE_DATE\|PLATFORM\|PATCHLEVEL\|REVISION\|DESCRIPTION\|COPYRIGHT\|ENGINE\)\)\>\%(\s*(\)\@!"
" Deprecated/removed in 1.9
syn match rubyPredefinedVariable "$="
syn match rubyPredefinedVariable "$-K\>" display
syn match rubyPredefinedVariable "$\%(deferr\|defout\)\>" display
syn match rubyPredefinedVariable "$KCODE\>" display
" Deprecated/removed in 2.4
syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\%(FALSE\|NIL\|TRUE\)\>\%(\s*(\)\@!"
syn cluster rubyGlobalVariable contains=rubyGlobalVariable,rubyPredefinedVariable,rubyGlobalVariableError
" Normal Regular Expressions {{{1
SynFold '/' syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\%(^\|\<\%(and\|or\|while\|until\|unless\|if\|elsif\|when\|not\|then\|else\)\|[;\~=!|&(,{[<>?:*+-]\)\s*\)\@<=/" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial nextgroup=@rubyModifier skipwhite
SynFold '/' syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\%(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\s\+\)\@<=/\%(=\|\_s\)\@!" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial nextgroup=@rubyModifier skipwhite
" Generalized Regular Expressions {{{1
SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial nextgroup=@rubyModifier skipwhite
SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r{" end="}[iomxneus]*" skip="\\\\\|\\}" contains=@rubyRegexpSpecial
SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r<" end=">[iomxneus]*" skip="\\\\\|\\>" contains=@rubyRegexpSpecial,rubyNestedAngleBrackets
SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r\[" end="\][iomxneus]*" skip="\\\\\|\\\]" contains=@rubyRegexpSpecial
SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r(" end=")[iomxneus]*" skip="\\\\\|\\)" contains=@rubyRegexpSpecial
SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r\z(\s\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial
" Characters {{{1
syn match rubyCharacter "\%(\w\|[^\x00-\x7F]\|[]})\"'/]\)\@1<!\%(?\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|
|