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## compare_shells: bash-4.4 zsh
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# Constructs borrowed from ksh. Hm I didn't realize zsh also implements these!
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# mksh implements most too.
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n=10
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for ((a=1; a <= n ; a++)) # Double parentheses, and naked 'n'
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do
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if test $a = 3; then
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continue
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fi
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if test $a = 6; then
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break
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fi
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echo $a
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done
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## status: 0
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## STDOUT:
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1
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2
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4
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5
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## END
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for ((a=1; a <= 3; a++)); do
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echo $a
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done
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for ((a=1; a <= 3; a++)) do
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echo $a
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done
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## status: 0
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## STDOUT:
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1
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2
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3
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1
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2
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3
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## END
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for ((a=1; a <= 3; a++)) {
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echo $a
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}
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## STDOUT:
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1
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2
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3
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## END
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i=1
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for (( ;i < 4; i++ )); do
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echo $i
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done
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## status: 0
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## STDOUT:
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1
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2
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3
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## END
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i=1
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for (( ; ; i++ )); do
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if test $i = 4; then
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break
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fi
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echo $i
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done
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## status: 0
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## STDOUT:
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1
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2
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3
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## END
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a=1
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for (( ; ; )); do
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if test $a = 4; then
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break
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fi
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echo $((a++))
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done
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## status: 0
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## STDOUT:
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1
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2
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3
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## END
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# bash is lenient; zsh disagrees
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for ((i = '3'; i < '5'; ++i)); do echo $i; done
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for ((i = "3"; i < "5"; ++i)); do echo $i; done
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for ((i = $'3'; i < $'5'; ++i)); do echo $i; done
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for ((i = $"3"; i < $"5"; ++i)); do echo $i; done
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## STDOUT:
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3
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4
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3
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4
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3
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4
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3
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4
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## END
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## OK zsh status: 1
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## OK zsh STDOUT:
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## END
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# Hm this was never a bug, but it's worth testing.
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# The bug was EvalToInt() in the condition.
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for base in 31 32 62; do
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start=$(( (1 << $base) - 2))
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end=$(( (1 << $base) + 2))
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for ((i = start; i < end; ++i)); do
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echo $i
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done
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echo ---
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done
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## STDOUT:
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2147483646
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2147483647
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2147483648
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2147483649
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---
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4294967294
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4294967295
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4294967296
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4294967297
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---
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147 |
4611686018427387902
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4611686018427387903
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149 |
4611686018427387904
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4611686018427387905
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---
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## END
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iters=0
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for ((i = 1 << 32; i; ++i)); do
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echo $i
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iters=$(( iters + 1 ))
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if test $iters -eq 5; then
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break
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fi
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done
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## STDOUT:
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4294967296
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4294967297
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4294967298
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4294967299
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4294967300
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## END
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