1 ## compare_shells: dash bash mksh ash
2 ## oils_failures_allowed: 3
3
4 #### getopts empty
5 set --
6 getopts 'a:' opt
7 echo "status=$? opt=$opt OPTARG=$OPTARG"
8 ## stdout: status=1 opt=? OPTARG=
9
10 #### getopts sees unknown arg
11 set -- -Z
12 getopts 'a:' opt
13 echo "status=$? opt=$opt OPTARG=$OPTARG"
14 ## stdout: status=0 opt=? OPTARG=
15
16 #### getopts three invocations
17 set -- -h -c foo
18 getopts 'hc:' opt
19 echo status=$? opt=$opt
20 getopts 'hc:' opt
21 echo status=$? opt=$opt
22 getopts 'hc:' opt
23 echo status=$? opt=$opt
24 ## STDOUT:
25 status=0 opt=h
26 status=0 opt=c
27 status=1 opt=?
28 ## END
29
30 #### getopts resets OPTARG
31 set -- -c foo -h
32 getopts 'hc:' opt
33 echo status=$? opt=$opt OPTARG=$OPTARG
34 getopts 'hc:' opt
35 echo status=$? opt=$opt OPTARG=$OPTARG
36 ## STDOUT:
37 status=0 opt=c OPTARG=foo
38 status=0 opt=h OPTARG=
39 ## END
40
41 #### Basic getopts invocation
42 set -- -h -c foo x y z
43 FLAG_h=0
44 FLAG_c=''
45 while getopts "hc:" opt; do
46 case $opt in
47 h) FLAG_h=1 ;;
48 c) FLAG_c="$OPTARG" ;;
49 esac
50 done
51 shift $(( OPTIND - 1 ))
52 echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
53 ## stdout: h=1 c=foo optind=4 argv=x y z
54
55 #### getopts with invalid variable name
56 set -- -c foo -h
57 getopts 'hc:' opt-
58 echo status=$? opt=$opt OPTARG=$OPTARG OPTIND=$OPTIND
59 ## stdout: status=2 opt= OPTARG=foo OPTIND=3
60 ## OK bash stdout: status=1 opt= OPTARG=foo OPTIND=3
61 ## OK mksh stdout: status=1 opt= OPTARG= OPTIND=1
62
63 #### getopts with invalid flag
64 set -- -h -x
65 while getopts "hc:" opt; do
66 case $opt in
67 h) FLAG_h=1 ;;
68 c) FLAG_c="$OPTARG" ;;
69 '?') echo ERROR $OPTIND; exit 2; ;;
70 esac
71 done
72 echo status=$?
73 ## stdout: ERROR 3
74 ## status: 2
75
76 #### getopts with with -
77 set -- -h -
78 echo "$@"
79 while getopts "hc:" opt; do
80 case $opt in
81 h) FLAG_h=1 ;;
82 c) FLAG_c="$OPTARG" ;;
83 '?') echo ERROR $OPTIND; exit 2; ;;
84 esac
85 done
86 echo status=$?
87 ## STDOUT:
88 -h -
89 status=0
90 ## END
91
92 #### getopts missing required argument
93 set -- -h -c
94 while getopts "hc:" opt; do
95 case $opt in
96 h) FLAG_h=1 ;;
97 c) FLAG_c="$OPTARG" ;;
98 '?') echo ERROR $OPTIND; exit 2; ;;
99 esac
100 done
101 echo status=$?
102 ## stdout: ERROR 3
103 ## status: 2
104
105 #### getopts doesn't look for flags after args
106 set -- x -h -c y
107 FLAG_h=0
108 FLAG_c=''
109 while getopts "hc:" opt; do
110 case $opt in
111 h) FLAG_h=1 ;;
112 c) FLAG_c="$OPTARG" ;;
113 esac
114 done
115 shift $(( OPTIND - 1 ))
116 echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
117 ## stdout: h=0 c= optind=1 argv=x -h -c y
118
119 #### getopts with explicit args
120 # NOTE: Alpine doesn't appear to use this, but bash-completion does.
121 FLAG_h=0
122 FLAG_c=''
123 arg=''
124 set -- A B C
125 while getopts "hc:" opt -h -c foo x y z; do
126 case $opt in
127 h) FLAG_h=1 ;;
128 c) FLAG_c="$OPTARG" ;;
129 esac
130 done
131 echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
132 ## STDOUT:
133 h=1 c=foo optind=4 argv=A B C
134 ## END
135
136 #### OPTIND
137 echo $OPTIND
138 ## stdout: 1
139
140 #### OPTIND after multiple getopts with same spec
141 while getopts "hc:" opt; do
142 echo '-'
143 done
144 echo OPTIND=$OPTIND
145
146 set -- -h -c foo x y z
147 while getopts "hc:" opt; do
148 echo '-'
149 done
150 echo OPTIND=$OPTIND
151
152 set --
153 while getopts "hc:" opt; do
154 echo '-'
155 done
156 echo OPTIND=$OPTIND
157
158 ## STDOUT:
159 OPTIND=1
160 -
161 -
162 OPTIND=4
163 OPTIND=1
164 ## END
165 ## BUG mksh STDOUT:
166 OPTIND=1
167 -
168 -
169 OPTIND=4
170 OPTIND=4
171 ## END
172
173 #### OPTIND after multiple getopts with different spec
174 # Wow this is poorly specified! A fundamental design problem with the global
175 # variable OPTIND.
176 set -- -a
177 while getopts "ab:" opt; do
178 echo '.'
179 done
180 echo OPTIND=$OPTIND
181
182 set -- -c -d -e foo
183 while getopts "cde:" opt; do
184 echo '-'
185 done
186 echo OPTIND=$OPTIND
187
188 set -- -f
189 while getopts "f:" opt; do
190 echo '_'
191 done
192 echo OPTIND=$OPTIND
193
194 ## STDOUT:
195 .
196 OPTIND=2
197 -
198 -
199 OPTIND=5
200 OPTIND=2
201 ## END
202 ## BUG ash/dash STDOUT:
203 .
204 OPTIND=2
205 -
206 -
207 -
208 OPTIND=5
209 _
210 OPTIND=2
211 ## END
212 ## BUG mksh STDOUT:
213 .
214 OPTIND=2
215 -
216 -
217 OPTIND=5
218 OPTIND=5
219 ## END
220
221 #### OPTIND narrowed down
222 FLAG_a=
223 FLAG_b=
224 FLAG_c=
225 FLAG_d=
226 FLAG_e=
227 set -- -a
228 while getopts "ab:" opt; do
229 case $opt in
230 a) FLAG_a=1 ;;
231 b) FLAG_b="$OPTARG" ;;
232 esac
233 done
234 # Bash doesn't reset OPTIND! It skips over c! mksh at least warns about this!
235 # You have to reset OPTIND yourself.
236
237 set -- -c -d -e E
238 while getopts "cde:" opt; do
239 case $opt in
240 c) FLAG_c=1 ;;
241 d) FLAG_d=1 ;;
242 e) FLAG_e="$OPTARG" ;;
243 esac
244 done
245
246 echo a=$FLAG_a b=$FLAG_b c=$FLAG_c d=$FLAG_d e=$FLAG_e
247
248 ## STDOUT:
249 a=1 b= c=1 d=1 e=E
250 ## END
251
252 ## BUG bash/mksh STDOUT:
253 a=1 b= c= d=1 e=E
254 ## END
255
256
257 #### Getopts parses the function's arguments
258 FLAG_h=0
259 FLAG_c=''
260 myfunc() {
261 while getopts "hc:" opt; do
262 case $opt in
263 h) FLAG_h=1 ;;
264 c) FLAG_c="$OPTARG" ;;
265 esac
266 done
267 }
268 set -- -h -c foo x y z
269 myfunc -c bar
270 echo h=$FLAG_h c=$FLAG_c opt=$opt optind=$OPTIND argv=$@
271 ## stdout: h=0 c=bar opt=? optind=3 argv=-h -c foo x y z
272
273 #### Local OPTIND
274 # minimal test case extracted from bash-completion
275 min() {
276 local OPTIND=1
277
278 while getopts "n:e:o:i:s" flag "$@"; do
279 echo "loop $OPTIND";
280 done
281 }
282 min -s
283 ## stdout: loop 2
284
285 #### two flags: -ab
286 getopts "ab" opt -ab
287 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
288 getopts "ab" opt -ab
289 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
290 ## STDOUT:
291 OPTIND=1 opt=a OPTARG=
292 OPTIND=2 opt=b OPTARG=
293 ## END
294 ## OK dash/mksh/ash STDOUT:
295 OPTIND=2 opt=a OPTARG=
296 OPTIND=2 opt=b OPTARG=
297 ## END
298
299 #### flag and arg: -c10
300 getopts "c:" opt -c10
301 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
302 getopts "c:" opt -c10
303 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
304 ## STDOUT:
305 OPTIND=2 opt=c OPTARG=10
306 OPTIND=2 opt=? OPTARG=
307 ## END
308 ## BUG dash STDOUT:
309 OPTIND=2 opt=c OPTARG=10
310 OPTIND=2 opt=? OPTARG=10
311 ## END
312
313 #### More Smooshing 1
314 getopts "ab:c:" opt -ab hi -c hello
315 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
316 getopts "ab:c:" opt -ab hi -c hello
317 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
318 getopts "ab:c:" opt -ab hi -c hello
319 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
320 ## STDOUT:
321 OPTIND=1 opt=a OPTARG=
322 OPTIND=3 opt=b OPTARG=hi
323 OPTIND=5 opt=c OPTARG=hello
324 ## END
325 ## OK dash/mksh/ash STDOUT:
326 OPTIND=2 opt=a OPTARG=
327 OPTIND=3 opt=b OPTARG=hi
328 OPTIND=5 opt=c OPTARG=hello
329 ## END
330
331 #### More Smooshing 2
332 getopts "abc:" opt -abc10
333 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
334 getopts "abc:" opt -abc10
335 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
336 getopts "abc:" opt -abc10
337 echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
338 ## STDOUT:
339 OPTIND=1 opt=a OPTARG=
340 OPTIND=1 opt=b OPTARG=
341 OPTIND=2 opt=c OPTARG=10
342 ## END
343 ## OK dash/mksh/ash STDOUT:
344 OPTIND=2 opt=a OPTARG=
345 OPTIND=2 opt=b OPTARG=
346 OPTIND=2 opt=c OPTARG=10
347 ## END
348
349 #### OPTIND should be >= 1 (regression)
350 OPTIND=-1
351 getopts a: foo
352 echo status=$?
353
354 OPTIND=0
355 getopts a: foo
356 echo status=$?
357 ## STDOUT:
358 status=1
359 status=1
360 ## END
361 ## OK dash status: 2
362 ## OK dash stdout-json: ""
363
364
365 #### getopts bug #1523
366
367 $SH $REPO_ROOT/spec/testdata/getopts-1523.sh -abcdef -abcde
368
369 ## status: 1
370 ## STDOUT:
371 opt:a
372 opt:b
373 opt:c arg:def
374 opt:a
375 opt:b
376 opt:c arg:de
377 ## END
378
379 #### More regression for #1523
380
381 $SH $REPO_ROOT/spec/testdata/getopts-1523.sh -abcdef -xyz
382
383 ## status: 1
384 ## STDOUT:
385 opt:a
386 opt:b
387 opt:c arg:def
388 err:?
389 err:?
390 err:?
391 ## END