zsh needs try-finally

zsh needs try-finally

[Dave Yost]

Hi.

Zsh needs a mechanism a la Java's try-finally or lisp's unwind-protect.

Example:

for file in $*
do
	tmp=$file.TMP-$commandName
	mv -f $file  $tmp
	(eval $filter) < $tmp > $file
	rm -f $tmp
done


The 'rm -f $tmp' command should be in a finally block, something like this:


for file in $*
do
	tmp=$file.TMP-$commandName
	mv -f $file  $tmp
	try
		(eval $filter) < $tmp > $file
	finally
		rm -f $tmp
	yrt
done


See also: http://yost.com/computers/java/finally-throwable.html

Thanks

Dave

Re: zsh needs try-finally

[Nikolai Weibull]

* Dave Yost <Dave@Yost.com> [Jun 01, 2004 23:30]:
> Zsh needs a mechanism a la Java's try-finally or lisp's unwind-protect.

Why?  Isn't this a bit ambitious for a shell language?  Some people
complain that Zsh is too complex already and tries to do too
much...While exception handling is great in most cases, I wonder if a
shell really needs it.
	nikolai

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