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Documentation for while: note updated exit status

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From updates in #4982.

(cherry picked from commit 4cc168ae11)
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David Adam 2019-02-04 22:26:59 +08:00
parent 4dfaa33d95
commit c9e529951b
1 changed files with 2 additions and 4 deletions
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6
doc_src/while.txt
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@ -9,10 +9,8 @@ while CONDITION; COMMANDS...; end
`while` repeatedly executes `CONDITION`, and if the exit status is 0, then executes `COMMANDS`. `while` repeatedly executes `CONDITION`, and if the exit status is 0, then executes `COMMANDS`.
If the exit status of `CONDITION` is non-zero on the first iteration, `COMMANDS` will not be The exit status of the while loop is the exit status of the last iteration of the `COMMANDS` executed,
executed at all, and the exit status of the loop set to the exit status of `CONDITION`. or 0 if none were executed. (This matches other shells and is POSIX-compatible.)
The exit status of the loop is 0 otherwise.
You can use <a href="#and">`and`</a> or <a href="#or">`or`</a> for complex conditions. Even more complex control can be achieved with `while true` containing a <a href="#break">break</a>. You can use <a href="#and">`and`</a> or <a href="#or">`or`</a> for complex conditions. Even more complex control can be achieved with `while true` containing a <a href="#break">break</a>.