OILS / spec / brace-expansion.test.sh View on Github | oils.pub

501 lines, 182 significant
1## compare_shells: bash mksh zsh
2## oils_failures_allowed: 0
3
4#### no expansion
5echo {foo}
6## stdout: {foo}
7
8#### incomplete trailing expansion
9echo {a,b}_{
10## stdout: a_{ b_{
11## OK osh stdout: {a,b}_{
12
13#### partial leading expansion
14echo }_{a,b}
15## stdout: }_a }_b
16## OK osh stdout: }_{a,b}
17
18#### partial leading expansion 2
19echo {x}_{a,b}
20## stdout: {x}_a {x}_b
21
22#### } in expansion
23# hm they treat this the SAME. Leftmost { is matched by first }, and then
24# there is another } as the postfix.
25echo {a,b}}
26## stdout: a} b}
27## status: 0
28## OK osh stdout: {a,b}}
29## OK zsh stdout-json: ""
30## OK zsh status: 1
31
32#### single expansion
33echo {foo,bar}
34## stdout: foo bar
35
36#### double expansion
37echo {a,b}_{c,d}
38## stdout: a_c a_d b_c b_d
39
40#### triple expansion
41echo {0,1}{0,1}{0,1}
42## stdout: 000 001 010 011 100 101 110 111
43
44#### double expansion with single and double quotes
45echo {'a',b}_{c,"d"}
46## stdout: a_c a_d b_c b_d
47
48#### expansion with mixed quotes
49echo -{\X"b",'cd'}-
50## stdout: -Xb- -cd-
51
52#### expansion with simple var
53a=A
54echo -{$a,b}-
55## stdout: -A- -b-
56
57#### double expansion with simple var -- bash bug
58# bash is inconsistent with the above
59a=A
60echo {$a,b}_{c,d}
61## stdout: A_c A_d b_c b_d
62## BUG bash stdout: b_c b_d
63
64#### double expansion with braced variable
65# This fixes it
66a=A
67echo {${a},b}_{c,d}
68## stdout: A_c A_d b_c b_d
69
70#### double expansion with literal and simple var
71a=A
72echo {_$a,b}_{c,d}
73## stdout: _A_c _A_d b_c b_d
74## BUG bash stdout: _ _ b_c b_d
75
76#### expansion with command sub
77a=A
78echo -{$(echo a),b}-
79## stdout: -a- -b-
80
81#### expansion with arith sub
82a=A
83echo -{$((1 + 2)),b}-
84## stdout: -3- -b-
85
86#### double expansion with escaped literals
87a=A
88echo -{\$,\[,\]}-
89## stdout: -$- -[- -]-
90
91#### { in expansion
92# bash and mksh treat this differently. bash treats the
93# first { is a prefix. I think it's harder to read, and \{{a,b} should be
94# required.
95echo {{a,b}
96## stdout: {{a,b}
97## BUG bash/zsh stdout: {a {b
98
99#### quoted { in expansion
100echo \{{a,b}
101## stdout: {a {b
102
103#### Empty expansion
104echo a{X,,Y}b
105## stdout: aXb ab aYb
106
107#### Empty alternative
108# zsh and mksh don't do word elision, probably because they do brace expansion
109# AFTER variable substitution.
110argv.py {X,,Y,}
111## stdout: ['X', 'Y']
112## OK mksh/zsh stdout: ['X', '', 'Y', '']
113## status: 0
114
115#### Empty alternative with empty string suffix
116# zsh and mksh don't do word elision, probably because they do brace expansion
117# AFTER variable substitution.
118argv.py {X,,Y,}''
119## stdout: ['X', '', 'Y', '']
120## status: 0
121
122#### nested brace expansion
123echo -{A,={a,b}=,B}-
124## stdout: -A- -=a=- -=b=- -B-
125
126#### triple nested brace expansion
127echo -{A,={a,.{x,y}.,b}=,B}-
128## stdout: -A- -=a=- -=.x.=- -=.y.=- -=b=- -B-
129
130#### nested and double brace expansion
131echo -{A,={a,b}{c,d}=,B}-
132## stdout: -A- -=ac=- -=ad=- -=bc=- -=bd=- -B-
133
134#### expansion on RHS of assignment
135# I think bash's behavior is more consistent. No splitting either.
136v={X,Y}
137echo $v
138## stdout: {X,Y}
139## BUG mksh stdout: X Y
140
141#### no expansion with RHS assignment
142{v,x}=X
143## status: 127
144## stdout-json: ""
145## OK zsh status: 1
146
147#### Tilde expansion
148HOME=/home/foo
149echo ~
150HOME=/home/bar
151echo ~
152## STDOUT:
153/home/foo
154/home/bar
155## END
156
157#### Tilde expansion with brace expansion
158
159# The brace expansion happens FIRST. After that, the second token has tilde
160# FIRST, so it gets expanded. The first token has an unexpanded tilde, because
161# it's not in the leading position.
162
163HOME=/home/bob
164
165# Command
166
167echo {foo~,~}/bar
168
169# Loop
170
171for x in {foo~,~}/bar; do
172 echo -- $x
173done
174
175# Array
176
177a=({foo~,~}/bar)
178
179for y in "${a[@]}"; do
180 echo "== $y"
181done
182
183## STDOUT:
184foo~/bar /home/bob/bar
185-- foo~/bar
186-- /home/bob/bar
187== foo~/bar
188== /home/bob/bar
189## END
190
191## BUG mksh STDOUT:
192foo~/bar ~/bar
193-- foo~/bar
194-- ~/bar
195== foo~/bar
196== ~/bar
197## END
198
199#### Two kinds of tilde expansion
200
201HOME=/home/bob
202
203# Command
204echo ~{/src,root}
205
206# Loop
207
208for x in ~{/src,root}; do
209 echo -- $x
210done
211
212# Array
213
214a=(~{/src,root})
215
216for y in "${a[@]}"; do
217 echo "== $y"
218done
219
220## STDOUT:
221/home/bob/src /root
222-- /home/bob/src
223-- /root
224== /home/bob/src
225== /root
226## END
227
228## BUG mksh STDOUT:
229~/src ~root
230-- ~/src
231-- ~root
232== ~/src
233== ~root
234## END
235
236#### Tilde expansion come before var expansion
237HOME=/home/bob
238foo=~
239echo $foo
240foo='~'
241echo $foo
242# In the second instance, we expand into a literal ~, and since var expansion
243# comes after tilde expansion, it is NOT tried again.
244## STDOUT:
245/home/bob
246~
247## END
248
249#### Number range expansion
250echo -{1..8..3}-
251echo -{1..10..3}-
252## STDOUT:
253-1- -4- -7-
254-1- -4- -7- -10-
255## N-I mksh STDOUT:
256-{1..8..3}-
257-{1..10..3}-
258## END
259
260#### Ascending number range expansion with negative step is invalid
261echo -{1..8..-3}-
262## stdout-json: ""
263## status: 2
264## BUG bash stdout: -1- -4- -7-
265## BUG zsh stdout: -7- -4- -1-
266## BUG bash/zsh status: 0
267## N-I mksh stdout: -{1..8..-3}-
268## N-I mksh status: 0
269
270#### regression: -1 step disallowed
271echo -{1..4..-1}-
272## stdout-json: ""
273## status: 2
274## BUG bash stdout: -1- -2- -3- -4-
275## BUG zsh stdout: -4- -3- -2- -1-
276## BUG bash/zsh status: 0
277## N-I mksh stdout: -{1..4..-1}-
278## N-I mksh status: 0
279
280#### regression: 0 step disallowed
281echo -{1..4..0}-
282## stdout-json: ""
283## status: 2
284## BUG bash stdout: -1- -2- -3- -4-
285## BUG zsh stdout: -1..4..0-
286## BUG bash/zsh status: 0
287## N-I mksh stdout: -{1..4..0}-
288## N-I mksh status: 0
289
290#### Descending number range expansion with positive step is invalid
291echo -{8..1..3}-
292## stdout-json: ""
293## status: 2
294## BUG bash/zsh stdout: -8- -5- -2-
295## BUG bash/zsh status: 0
296## N-I mksh stdout: -{8..1..3}-
297## N-I mksh status: 0
298
299#### Descending number range expansion with negative step
300echo -{8..1..-3}-
301## stdout: -8- -5- -2-
302# zsh behavior seems clearly wrong!
303## BUG zsh stdout: -2- -5- -8-
304## N-I mksh stdout: -{8..1..-3}-
305
306#### Singleton ranges
307echo {1..1}-
308echo {-9..-9}-
309echo {-9..-9..3}-
310echo {-9..-9..-3}-
311echo {a..a}-
312## STDOUT:
3131-
314-9-
315-9-
316-9-
317a-
318## END
319## N-I mksh STDOUT:
320{1..1}-
321{-9..-9}-
322{-9..-9..3}-
323{-9..-9..-3}-
324{a..a}-
325## END
326
327#### Singleton char ranges with steps
328echo {a..a..2}-
329echo {a..a..-2}-
330## STDOUT:
331a-
332a-
333## END
334# zsh is considered buggy because it implements {a..a} but not {a..a..1} !
335## BUG zsh STDOUT:
336{a..a..2}-
337{a..a..-2}-
338## END
339## N-I mksh STDOUT:
340{a..a..2}-
341{a..a..-2}-
342## END
343
344#### Char range expansion
345echo -{a..e}-
346## stdout: -a- -b- -c- -d- -e-
347## N-I mksh stdout: -{a..e}-
348
349#### Char range expansion with step
350echo -{a..e..2}-
351## stdout: -a- -c- -e-
352## N-I mksh/zsh stdout: -{a..e..2}-
353
354#### Char ranges with steps of the wrong sign
355echo -{a..e..-2}-
356echo -{e..a..2}-
357## stdout-json: ""
358## status: 2
359## BUG bash STDOUT:
360-a- -c- -e-
361-e- -c- -a-
362## END
363## BUG bash status: 0
364## N-I mksh/zsh STDOUT:
365-{a..e..-2}-
366-{e..a..2}-
367## END
368## N-I mksh/zsh status: 0
369
370#### Mixed case char expansion is invalid
371case $SH in *zsh) echo BUG; exit ;; esac
372echo -{z..A}-
373echo -{z..A..2}-
374## stdout-json: ""
375## status: 2
376## OK mksh STDOUT:
377-{z..A}-
378-{z..A..2}-
379## END
380## OK mksh status: 0
381## BUG zsh stdout: BUG
382## BUG zsh status: 0
383# This is exposed a weird bash bug!!!
384## BUG bash stdout-json: ""
385## BUG bash status: 1
386
387#### Descending char range expansion
388echo -{e..a..-2}-
389## stdout: -e- -c- -a-
390## N-I mksh/zsh stdout: -{e..a..-2}-
391
392#### Fixed width number range expansion
393echo -{01..03}-
394echo -{09..12}- # doesn't become -012-, fixed width
395echo -{12..07}-
396## STDOUT:
397-01- -02- -03-
398-09- -10- -11- -12-
399-12- -11- -10- -09- -08- -07-
400## END
401## N-I mksh STDOUT:
402-{01..03}-
403-{09..12}-
404-{12..07}-
405## END
406
407#### Inconsistent fixed width number range expansion
408# zsh uses the first one, bash uses the max width?
409echo -{01..003}-
410## stdout: -001- -002- -003-
411## OK zsh stdout: -01- -02- -03-
412## N-I mksh stdout: -{01..003}-
413
414#### Inconsistent fixed width number range expansion
415# zsh uses the first width, bash uses the max width?
416echo -{01..3}-
417## stdout: -01- -02- -03-
418## N-I mksh stdout: -{01..3}-
419
420#### Adjacent comma and range works
421echo -{a,b}{1..3}-
422## STDOUT:
423-a1- -a2- -a3- -b1- -b2- -b3-
424## END
425## N-I mksh STDOUT:
426-a{1..3}- -b{1..3}-
427## END
428
429#### Range inside comma works
430echo -{a,_{1..3}_,b}-
431## STDOUT:
432-a- -_1_- -_2_- -_3_- -b-
433## END
434## N-I mksh STDOUT:
435-a- -_{1..3}_- -b-
436## END
437
438#### Mixed comma and range doesn't work
439echo -{a,b,1..3}-
440## STDOUT:
441-a- -b- -1..3-
442## END
443
444#### comma and invalid range (adjacent and nested)
445echo -{a,b}{1...3}-
446echo -{a,{1...3}}-
447echo {a,b}{}
448## STDOUT:
449-a{1...3}- -b{1...3}-
450-a- -{1...3}-
451a{} b{}
452## END
453# osh doesn't expand ANYTHING on invalid syntax. That's OK because of the test
454# case below.
455## OK osh STDOUT:
456-{a,b}{1...3}-
457-{a,{1...3}}-
458{a,b}{}
459## END
460
461#### OSH provides an alternative to invalid syntax
462echo -{a,b}\{1...3\}-
463echo -{a,\{1...3\}}-
464echo {a,b}\{\}
465## STDOUT:
466-a{1...3}- -b{1...3}-
467-a- -{1...3}-
468a{} b{}
469## END
470
471#### Side effect in expansion
472# bash is the only one that does it first. I guess since this is
473# non-POSIX anyway, follow bash?
474i=0
475echo {a,b,c}-$((i++))
476## stdout: a-0 b-1 c-2
477## OK mksh/zsh stdout: a-0 b-0 c-0
478
479#### Invalid brace expansions don't expand
480echo {1.3}
481echo {1...3}
482echo {1__3}
483## STDOUT:
484{1.3}
485{1...3}
486{1__3}
487## END
488
489#### Invalid brace expansions mixing characters and numbers
490# zsh does something crazy like : ; < = > that I'm not writing
491case $SH in *zsh) echo BUG; exit ;; esac
492echo {1..a}
493echo {z..3}
494## STDOUT:
495{1..a}
496{z..3}
497## END
498## BUG zsh STDOUT:
499BUG
500## END
501