1	#!/usr/bin/env bash
2
3	#### Here string
4	cat <<< 'hi'
5	## stdout-json: "hi\n"
6	## N-I dash stdout-json: ""
7	## N-I dash status: 2
8
9	#### Here string with $
10	cat <<< $'one\ntwo\n'
11	## stdout-json: "one\ntwo\n\n"
12	## N-I dash stdout-json: ""
13	## N-I dash status: 2
14
15	#### Here redirect with explicit descriptor
16	# A space betwen 0 and <<EOF causes it to pass '0' as an arg to cat.
17	cat 0<<EOF
18	one
19	EOF
20	## stdout: one
21
22	#### Here doc from another input file descriptor
23	# NOTE: OSH fails on descriptor 9, but not descriptor 8? Is this because of
24	# the Python VM? How to inspect state?
25	read_from_fd.py 8 8<<EOF
26	here doc on descriptor
27	EOF
28	## stdout: 8: here doc on descriptor
29
30	#### Multiple here docs with different descriptors
31	read_from_fd.py 0 3 <<EOF 3<<EOF3
32	fd0
33	EOF
34	fd3
35	EOF3
36	## STDOUT:
37	0: fd0
38	3: fd3
39	## END
40
41	#### Here doc with bad var delimiter
42	cat <<${a}
43	here
44	${a}
45	## stdout: here
46
47	#### Here doc with bad comsub delimiter
48	# bash is OK with this; dash isn't. Should be a parse error.
49	cat <<$(a)
50	here
51	$(a)
52	## stdout-json: ""
53	## status: 2
54	## BUG bash stdout: here
55	## BUG bash status: 0
56	## OK mksh status: 1
57
58	#### Here doc and < redirect -- last one wins
59	echo hello >$TMP/hello.txt # temporary fix
60	cat <<EOF <$TMP/hello.txt
61	here
62	EOF
63	## stdout: hello
64
65	#### < redirect and here doc -- last one wins
66	cat <$TMP/hello.txt <<EOF
67	here
68	EOF
69	## stdout: here
70
71	#### Here doc with var sub, command sub, arith sub
72	var=v
73	cat <<EOF
74	var: ${var}
75	command: $(echo hi)
76	arith: $((1+2))
77	EOF
78	## STDOUT:
79	var: v
80	command: hi
81	arith: 3
82	## END
83
84	#### Here doc in middle. And redirects in the middle.
85	# This isn't specified by the POSIX grammar, but it's accepted by both dash and
86	# bash!
87	echo foo > _tmp/foo.txt
88	echo bar > _tmp/bar.txt
89	cat <<EOF 1>&2 _tmp/foo.txt - _tmp/bar.txt
90	here
91	EOF
92	## STDERR:
93	foo
94	here
95	bar
96	## END
97
98	#### Here doc line continuation
99	cat <<EOF \
100	; echo two
101	one
102	EOF
103	## STDOUT:
104	one
105	two
106	## END
107
108	#### Here doc with quote expansion in terminator
109	cat <<'EOF'"2"
110	one
111	two
112	EOF2
113	## stdout-json: "one\ntwo\n"
114
115	#### Here doc with multiline double quoted string
116	cat <<EOF; echo "two
117	three"
118	one
119	EOF
120	## STDOUT:
121	one
122	two
123	three
124	## END
125
126	#### Two here docs -- first is ignored; second ones wins!
127	<<EOF1 cat <<EOF2
128	hello
129	EOF1
130	there
131	EOF2
132	## stdout: there
133
134	#### Here doc with line continuation, then pipe. Syntax error.
135	cat <<EOF \
136	1
137	2
138	3
139	EOF
140	| tac
141	## status: 2
142	## OK mksh status: 1
143
144	#### Here doc with pipe on first line
145	cat <<EOF | tac
146	1
147	2
148	3
149	EOF
150	## STDOUT:
151	3
152	2
153	1
154	## END
155
156	#### Here doc with pipe continued on last line
157	cat <<EOF |
158	1
159	2
160	3
161	EOF
162	tac
163	## STDOUT:
164	3
165	2
166	1
167	## END
168
169	#### Here doc with builtin 'read'
170	# read can't be run in a subshell.
171	read v1 v2 <<EOF
172	val1 val2
173	EOF
174	echo =$v1= =$v2=
175	## stdout: =val1= =val2=
176
177	#### Compound command here doc
178	while read line; do
179	echo X $line
180	done <<EOF
181	1
182	2
183	3
184	EOF
185	## STDOUT:
186	X 1
187	X 2
188	X 3
189	## END
190
191
192	#### Here doc in while condition and here doc in body
193	while cat <<E1 && cat <<E2; do cat <<E3; break; done
194	1
195	E1
196	2
197	E2
198	3
199	E3
200	## STDOUT:
201	1
202	2
203	3
204	## END
205
206	#### Here doc in while condition and here doc in body on multiple lines
207	while cat <<E1 && cat <<E2
208	1
209	E1
210	2
211	E2
212	do
213	cat <<E3
214	3
215	E3
216	break
217	done
218	## STDOUT:
219	1
220	2
221	3
222	## END
223
224	#### Here doc in while loop split up more
225	while cat <<E1
226	1
227	E1
228
229	cat <<E2
230	2
231	E2
232
233	do
234	cat <<E3
235	3
236	E3
237	break
238	done
239	## STDOUT:
240	1
241	2
242	3
243	## END
244
245	#### Mixing << and <<-
246	cat <<-EOF; echo --; cat <<EOF2
247	one
248	EOF
249	two
250	EOF2
251	## stdout-json: "one\n--\ntwo\n"
252
253
254
255	#### Two compound commands with two here docs
256	while read line; do echo X $line; done <<EOF; echo ==; while read line; do echo Y $line; done <<EOF2
257	1
258	2
259	EOF
260	3
261	4
262	EOF2
263	## stdout-json: "X 1\nX 2\n==\nY 3\nY 4\n"
264
265	#### Function def and execution with here doc
266	func() { cat; } <<EOF; echo before; func; echo after
267	1
268	2
269	EOF
270	## stdout-json: "before\n1\n2\nafter\n"
271
272	#### Here doc as command prefix
273	<<EOF tac
274	1
275	2
276	3
277	EOF
278	## stdout-json: "3\n2\n1\n"
279
280	# NOTE that you can have redirection AFTER the here doc thing. And you don't
281	# need a space! Those are operators.
282	#
283	# POSIX doesn't seem to have this? They have io_file, which is for
284	# filenames, and io_here, which is here doc. But about 1>&2 syntax? Geez.
285	#### Redirect after here doc
286	cat <<EOF 1>&2
287	out
288	EOF
289	## stderr: out
290
291	#### here doc stripping tabs
292	cat <<-EOF
293	1
294	2
295	3
296	EOF
297	## STDOUT:
298	1
299	2
300	3
301	## END
302
303	#### Here doc within subshell with boolean
304	[[ $(cat <<EOF
305	foo
306	EOF
307	) == foo ]]; echo $?
308	## stdout: 0
309	## N-I dash stdout: 127
310
311	#### Here Doc in if condition
312	if cat <<EOF; then
313	here doc in IF CONDITION
314	EOF
315	echo THEN executed
316	fi
317	## STDOUT:
318	here doc in IF CONDITION
319	THEN executed
320	## END
321
322	#### Multiple here docs in pipeline
323	# SKIPPED: hangs with osh on Debian
324	# The second instance reads its stdin from the pipe, and fd 5 from a here doc.
325	read_from_fd.py 3 3<<EOF3 | read_from_fd.py 0 5 5<<EOF5
326	fd3
327	EOF3
328	fd5
329	EOF5
330	## STDOUT:
331	0: 3: fd3
332	5: fd5
333	## END
334
335	#### Multiple here docs in pipeline on multiple lines
336	# SKIPPED: hangs with osh on Debian
337	# The second instance reads its stdin from the pipe, and fd 5 from a here doc.
338	read_from_fd.py 3 3<<EOF3 |
339	fd3
340	EOF3
341	read_from_fd.py 0 5 5<<EOF5
342	fd5
343	EOF5
344	## STDOUT:
345	0: 3: fd3
346	5: fd5
347	## END