1 ## compare_shells: bash
2 ## oils_failures_allowed: 2
3
4 #### SHELLOPTS is updated when options are changed
5 echo $SHELLOPTS | grep -q xtrace
6 echo $?
7 set -x
8 echo $SHELLOPTS | grep -q xtrace
9 echo $?
10 set +x
11 echo $SHELLOPTS | grep -q xtrace
12 echo $?
13 ## STDOUT:
14 1
15 0
16 1
17 ## END
18 ## N-I dash/mksh STDOUT:
19 1
20 1
21 1
22 ## END
23
24 #### SHELLOPTS is readonly
25 SHELLOPTS=x
26 echo status=$?
27 ## stdout: status=1
28 ## N-I dash/mksh stdout: status=0
29
30 # Setting a readonly variable in osh is a hard failure.
31 ## OK osh status: 1
32 ## OK osh stdout-json: ""
33
34 #### SHELLOPTS and BASHOPTS are non-empty
35
36 # 2024-06 - tickled by Samuel testing Gentoo
37
38 if test -v SHELLOPTS; then
39 echo 'shellopts is set'
40 fi
41 if test -v BASHOPTS; then
42 echo 'bashopts is set'
43 fi
44
45 # bash: braceexpand:hashall etc.
46
47 echo shellopts ${SHELLOPTS:?} > /dev/null
48 echo bashopts ${BASHOPTS:?} > /dev/null
49
50 ## STDOUT:
51 shellopts is set
52 bashopts is set
53 ## END
54
55 ## N-I dash status: 2
56 ## N-I mksh status: 1
57
58 #### SHELLOPTS reflects flags like sh -x
59
60 $SH -x -c 'echo $SHELLOPTS' | grep -o xtrace
61
62 ## STDOUT:
63 xtrace
64 ## END
65
66 #### export SHELLOPTS does cross-process tracing
67
68 $SH -c '
69 export SHELLOPTS
70 set -x
71 echo 1
72 $SH -c "echo 2"
73 ' 2>&1 | sed 's/.*sh /sh /g'
74
75 ## STDOUT:
76 + echo 1
77 1
78 sh -c 'echo 2'
79 + echo 2
80 2
81 ## END
82
83 #### export SHELLOPTS does cross-process tracing with bash
84
85 # calling bash
86 $SH -c '
87 export SHELLOPTS
88 set -x
89 #echo SHELLOPTS=$SHELLOPTS
90 echo 1
91 bash -c "echo 2"
92 ' 2>&1 | sed 's/.*sh /sh /g'
93
94 ## STDOUT:
95 + echo 1
96 1
97 sh -c 'echo 2'
98 + echo 2
99 2
100 ## END
101
102 #### OSH calling bash with SHELLOPTS does not change braceexpand
103
104 #echo outside=$SHELLOPTS
105
106 # sed pattern to normalize spaces
107 normalize='s/[ \t]\+/ /g'
108
109 bash -c '
110 #echo bash=$SHELLOPTS
111 set -o | grep braceexpand | sed "$1"
112 ' unused "$normalize"
113
114 env SHELLOPTS= bash -c '
115 #echo bash2=$SHELLOPTS
116 set -o | grep braceexpand | sed "$1"
117 ' unused "$normalize"
118
119 ## STDOUT:
120 braceexpand on
121 braceexpand on
122 ## END
123
124 #### If shopt --set xtrace is allowed, it should update SHELLOPTS, not BASHOPTS
125 case $SH in bash) exit ;; esac
126
127 shopt --set xtrace
128 echo SHELLOPTS=$SHELLOPTS
129 set -x
130 echo SHELLOPTS=$SHELLOPTS
131 set +x
132 echo SHELLOPTS=$SHELLOPTS
133
134 ## STDOUT:
135 SHELLOPTS=xtrace
136 SHELLOPTS=xtrace
137 SHELLOPTS=
138 ## END
139 ## N-I bash STDOUT:
140 ## END
141