1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
: ${THIS_SH:=$PWD/bash} ${TMPDIR:=/tmp}
POSIX_SH="${THIS_SH} -o posix"
# these are the posix special builtins that take a numeric argument
echo invalid numeric argument
# default mode
for b in exit break continue shift; do
BUILTIN=$b ${THIS_SH} -c 'set -- a b c; (exit 45); for f in _; do $BUILTIN abcde; done; echo after $BUILTIN: $?' bash
done
${THIS_SH} -c 'func() { return abcde; echo in func: $?; }; func; echo after return: $?' bash
# posix mode
for b in exit break continue shift; do
BUILTIN=$b ${POSIX_SH} -c 'set -- a b c; (exit 45); for f in _; do $BUILTIN abcde; done; echo after $BUILTIN: $?' bash
done
${POSIX_SH} -c 'func() { return abcde; echo in func: $?; }; func; echo after return: $?' bash
# non-special builtins, no difference
set -o history
HISTFILE=/dev/null
echo a >/dev/null
echo b >/dev/null
echo c >/dev/null
history abcde
echo after history: $?
history 10 42
echo after history: $?
set +o history
# too many arguments
echo too many arguments
TDIR=$TMPDIR/errors-$$
TFILE=errors
mkdir $TDIR || exit 1
cd $TDIR
cat <<\EOF >$TFILE
set -- a b c
(exit 45)
for f in _; do $BUILTIN 42 abcde; done
echo after $BUILTIN: $?
EOF
# default mode
for b in exit return shift break continue; do
BUILTIN=$b ${THIS_SH} $TFILE # TFILE for consistent error messages
done
# posix mode
for b in exit return shift break continue; do
BUILTIN=$b ${POSIX_SH} $TFILE # TFILE for consistent error messages
done
cd $OLDPWD
rm -rf $TDIR
|
