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1d21e3f470
A while loop now evaluates to the last executed command in the body, or zero if the loop body is empty. This matches POSIX semantics. Add a bunch of tricky tests. See #4982
74 lines
1.3 KiB
Fish
74 lines
1.3 KiB
Fish
# vim: set ft=fish:
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function never_runs
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while false
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end
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end
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function early_return
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while true
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return 2
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end
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end
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function runs_once
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set -l i 1
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while test $i -ne 0 && set i (math $i - 1)
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end
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end
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# this should return 1
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never_runs; echo "Empty Loop in Function: $status"
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# this should return 0
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runs_once; echo "Runs Once: $status"
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# this should return 2
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early_return; echo "Early Return: $status"
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logmsg Loops exit status handling
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function set_status ; return $argv[1]; end
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# The previous status is visible in the loop condition.
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# This includes both the incoming status, and the last command in the
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# loop body.
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set_status 36
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while begin
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set -l saved $status
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echo "Condition Status: $status"
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set_status $saved
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end
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true
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end
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# The condition status IS visible in the loop body.
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set_status 55
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while true
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echo "Body Status: $status"
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break
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end
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# The status of the last command is visible in the loop condition
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set_status 13
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while begin
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set -l saved $status
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echo "Condition 2 Status: $saved"
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test $saved -ne 5
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end
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set_status 5
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end
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# The status of the last command is visible outside the loop
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set rem 5 7 11
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while [ (count $rem) -gt 0 ]
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set_status $rem[1]
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set rem $rem[2..-1]
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end
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echo "Loop Exit Status: $status"
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# Empty loops succeed.
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false
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while false; end
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echo "Empty Loop Status: $status"
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