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Commit | Line | Data |
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95732b49 JA |
1 | # basic cases |
2 | a=1 | |
3 | a+=4 | |
4 | echo $a | |
5 | ||
6 | x=(1 2 3) | |
7 | x+=(4 5 6) | |
8 | ||
9 | echo ${x[@]} | |
10 | ||
11 | x[4]+=1 | |
12 | echo ${x[@]} | |
13 | ||
14 | # trickier cases | |
ac50fbac CR |
15 | # post-bash-4.2: bash understands += in environment assignments preceding |
16 | # command names | |
95732b49 JA |
17 | a+=5 printenv a |
18 | echo $a | |
19 | ||
20 | # if the integer flag is set, ksh93 appears to do arithmetic += and evaluate | |
21 | # old value as an arithmetic expression | |
22 | a= | |
23 | typeset -i a | |
24 | a+=7 | |
25 | echo $a | |
26 | ||
27 | b=4+1 | |
28 | typeset -i b | |
29 | b+=37 | |
30 | ||
31 | echo $b | |
32 | ||
33 | unset x | |
34 | x=(1 2 3 4 5) | |
35 | ||
36 | typeset -i x | |
37 | ||
38 | x[4]+=7 | |
39 | ||
40 | echo ${x[@]} | |
41 | ||
42 | unset x | |
43 | typeset -i x | |
44 | ||
45 | x=([0]=7+11) | |
46 | echo ${x[@]} | |
47 | ||
48 | unset x | |
49 | x=(1 2 3 4 5) | |
50 | ||
51 | typeset -i x | |
52 | ||
53 | #x[4]=7+11 | |
54 | ||
55 | x=(1 2 3 4 [4]=7+11 ) | |
56 | echo ${x[@]} | |
57 | ||
58 | x=( 1 2 [2]+=7 4 5 ) | |
59 | echo ${x[@]} | |
60 | ||
61 | x+=( [3]+=9 [5]=9 ) | |
62 | echo ${x[@]} | |
63 | ||
64 | unset a | |
65 | a=1 | |
66 | export a+=4 | |
67 | printenv a | |
68 | printenv a+ | |
69 | ||
70 | unset x | |
71 | typeset -i x=4+5 | |
72 | echo $x | |
73 | ||
74 | unset x | |
75 | typeset x+=4 | |
76 | echo $x | |
77 | ||
78 | typeset -i x+=5 | |
79 | echo $x | |
80 | ||
81 | readonly x+=7 | |
82 | echo $x | |
83 | ||
84 | x+=5 | |
ac50fbac CR |
85 | |
86 | ${THIS_SH} ./appendop1.sub | |
87 | ${THIS_SH} ./appendop2.sub |