loop exited when error occurs?

loop exited when error occurs?

[Michal Vitecek]

 [ i apologize for sending this to zsh-workers first - a copy&paste
 mistake ]

 hello,

 i've come across another strange behaviour of zsh. if an error occurs the
 loop is exited and the code below it is executed (see example program).

 example program (test.sh):
 
 ----begin----
 
#!/bin/zsh

nexistentdirs=(aaa bbb ccc)
while :; do
    files=(${nonexistentdirs}/*)
    echo "in the loop"
done
echo "out of loop"

 ----end----

 $ chmod +x test.sh
 $ ./test.sh
 ./test.sh:5: no matches found: ccc/*
 out of loop
 $

 $ mkdir aaa bbb ccc
 $ touch aaa/fileA bbb/fileB ccc/fileC
 $ ./test.sh
 in the loop
 in the loop
 ...
 [and so on]

 i'd expect zsh to simply continue executing commands after the faulty command
but it exits the loop and continues simply below the loop. perhaps another bug?

    thanks for your help,
-- 
			fuf


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Re: loop exited when error occurs?

[Michal Vitecek]

 correction - there's a typo in the initialization of 'nonexistentdirs'.
 it should read 'nonexistentdirs=(aaa bbb ccc)'. sorry.

Michal Vitecek <M.Vitecek@sh.cvut.cz> wrote:
> [ i apologize for sending this to zsh-workers first - a copy&paste
> mistake ]
>
> hello,
>
> i've come across another strange behaviour of zsh. if an error occurs the
> loop is exited and the code below it is executed (see example program).
>
> example program (test.sh):
> 
> ----begin----
> 
>#!/bin/zsh
>
>nexistentdirs=(aaa bbb ccc)
>while :; do
>    files=(${nonexistentdirs}/*)
>    echo "in the loop"
>done
>echo "out of loop"
>
> ----end----
>
> $ chmod +x test.sh
> $ ./test.sh
> ./test.sh:5: no matches found: ccc/*
> out of loop
> $
>
> $ mkdir aaa bbb ccc
> $ touch aaa/fileA bbb/fileB ccc/fileC
> $ ./test.sh
> in the loop
> in the loop
> ...
> [and so on]
>
> i'd expect zsh to simply continue executing commands after the faulty command
>but it exits the loop and continues simply below the loop. perhaps another bug?
>
>    thanks for your help,
>-- 
>			fuf
>
>
>------------------------------ na IRC -------------------------------------
> BillGates [bgates@www.microsoft.com] has joined #LINUX
> ...
> mode/#linux [+b BillGates!*@*] by DoDad
> BillGates was kicked off #linux by DoDad (banned: We see enough of Bill
>          Gates already.)
> 

-- 
			fuf


------------------------------ na IRC -------------------------------------
 BillGates [bgates@www.microsoft.com] has joined #LINUX
 ...
 mode/#linux [+b BillGates!*@*] by DoDad
 BillGates was kicked off #linux by DoDad (banned: We see enough of Bill
          Gates already.)