| 1 | #
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| 2 | # Constructs borrowed from ksh. Hm I didn't realize zsh also implements these!
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| 3 | # mksh implements most too.
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| 4 |
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| 5 | #### C-style for loop
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| 6 | n=10
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| 7 | for ((a=1; a <= n ; a++)) # Double parentheses, and naked 'n'
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| 8 | do
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| 9 | if test $a = 3; then
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| 10 | continue
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| 11 | fi
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| 12 | if test $a = 6; then
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| 13 | break
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| 14 | fi
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| 15 | echo $a
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| 16 | done
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| 17 | ## status: 0
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| 18 | ## STDOUT:
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| 19 | 1
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| 20 | 2
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| 21 | 4
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| 22 | 5
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| 23 | ## END
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| 24 |
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| 25 | #### For loop with and without semicolon
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| 26 | for ((a=1; a <= 3; a++)); do
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| 27 | echo $a
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| 28 | done
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| 29 | for ((a=1; a <= 3; a++)) do
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| 30 | echo $a
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| 31 | done
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| 32 | ## status: 0
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| 33 | ## STDOUT:
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| 34 | 1
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| 35 | 2
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| 36 | 3
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| 37 | 1
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| 38 | 2
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| 39 | 3
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| 40 | ## END
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| 41 |
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| 42 | #### Accepts { } syntax too
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| 43 | for ((a=1; a <= 3; a++)) {
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| 44 | echo $a
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| 45 | }
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| 46 | ## STDOUT:
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| 47 | 1
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| 48 | 2
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| 49 | 3
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| 50 | ## END
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| 51 |
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| 52 | #### Empty init
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| 53 | i=1
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| 54 | for (( ;i < 4; i++ )); do
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| 55 | echo $i
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| 56 | done
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| 57 | ## status: 0
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| 58 | ## STDOUT:
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| 59 | 1
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| 60 | 2
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| 61 | 3
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| 62 | ## END
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| 63 |
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| 64 | #### Empty init and cond
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| 65 | i=1
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| 66 | for (( ; ; i++ )); do
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| 67 | if test $i = 4; then
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| 68 | break
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| 69 | fi
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| 70 | echo $i
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| 71 | done
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| 72 | ## status: 0
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| 73 | ## STDOUT:
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| 74 | 1
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| 75 | 2
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| 76 | 3
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| 77 | ## END
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| 78 |
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| 79 | #### Infinite loop with ((;;))
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| 80 | a=1
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| 81 | for (( ; ; )); do
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| 82 | if test $a = 4; then
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| 83 | break
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| 84 | fi
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| 85 | echo $((a++))
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| 86 | done
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| 87 | ## status: 0
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| 88 | ## STDOUT:
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| 89 | 1
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| 90 | 2
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| 91 | 3
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| 92 | ## END
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| 93 |
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| 94 |
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| 95 | #### Arith lexer mode
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| 96 |
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| 97 | # bash is lenient; zsh disagrees
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| 98 |
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| 99 | for ((i = '3'; i < '5'; ++i)); do echo $i; done
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| 100 | for ((i = "3"; i < "5"; ++i)); do echo $i; done
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| 101 | for ((i = $'3'; i < $'5'; ++i)); do echo $i; done
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| 102 | for ((i = $"3"; i < $"5"; ++i)); do echo $i; done
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| 103 |
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| 104 | ## STDOUT:
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| 105 | 3
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| 106 | 4
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| 107 | 3
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| 108 | 4
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| 109 | 3
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| 110 | 4
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| 111 | 3
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| 112 | 4
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| 113 | ## END
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| 114 | ## OK zsh status: 1
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| 115 | ## OK zsh STDOUT:
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| 116 | ## END
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| 117 |
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