1	# oil-var-sub.test.sh
2
3	#### ${x|html}
4	x='echo hi 2>&1'
5	echo "${x|html}"
6	## STDOUT:
7	echo hi 2>&1
8	## END
9
10	#### ${x %05d}
11	x=3
12	printf '%05d\n' "$x"
13	echo ${x %05d}
14	## STDOUT:
15	00003
16	00003
17	## END
18
19	#### ${.myproc builtin sub}
20
21	proc myproc() {
22	echo "$@"
23	}
24
25	echo ${.myproc builtin sub}
26	## STDOUT:
27	builtin sub
28	## END
29
30	#### $[x] with _ESCAPER
31	shopt --set oil:upgrade
32
33	x='echo hi 2>&1'
34
35	shvar _ESCAPER=html {
36	echo "code $[x]"
37	}
38
39	# No _ESCAPER: fatal error
40	echo "code $[x]"
41
42	## STDOUT:
43	code echo hi 2>&1
44	## END
45