summaryrefslogtreecommitdiff
path: root/shell/ash_test/ash-vars/var_bash4.tests
blob: 01a0def51b194053351acd7a95a2fbf4160a30be (plain)
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
# This testcase demonstrates that backslashes are treated differently
# in 1st and 2nd parts of ${var/search/repl}:
# if quoted: "${var/search/repl}", and repl contains \a (a non-special char),
# the backslash in repl stays; if unquoted, backslash: removed
# But search part does not act like that: \a is always converted to just a,
# even in quotes.
#
# bash4 (and probably bash3 too) result: "Quoted:" results are different -
# they have extra backslash before z.

v='a*b\*c'
echo 'Source:       ' "$v"
echo 'Replace str:  ' '_\\_\z_'

echo 'Pattern:      ' 'single backslash and star: "replace literal star"'
r=${v/\*/_\\_\z_}
echo 'In assignment:' "$r"
echo 'Unquoted:     ' ${v/\*/_\\_\z_}
echo 'Quoted:       ' "${v/\*/_\\_\z_}"

echo 'Pattern:      ' 'double backslash and star: "replace backslash and everything after it"'
r=${v/\\*/_\\_\z_}
echo 'In assignment:' "$r"
echo 'Unquoted:     '  ${v/\\*/_\\_\z_}
echo 'Quoted:       ' "${v/\\*/_\\_\z_}"

echo

v='a\bc'
echo 'Source:       ' "$v"
echo 'Replace str:  ' '_\\_\z_'

echo 'Pattern:      ' 'single backslash and b: "replace literal b"'
r=${v/\b/_\\_\z_}
echo 'In assignment:' "$r"
echo 'Unquoted:     '  ${v/\b/_\\_\z_}
echo 'Quoted:       ' "${v/\b/_\\_\z_}"

echo 'Pattern:      ' 'double backslash and b: "replace backslash and b"'
r=${v/\\b/_\\_\z_}
echo 'In assignment:' "$r"
echo 'Unquoted:     '  ${v/\\b/_\\_\z_}
echo 'Quoted:       ' "${v/\\b/_\\_\z_}"

echo

echo Done: $?