Re^4: Make select apply to modules as well

Ok, what is happening is that the default filehandle seems to be changed inside my module as it should UNTIL I make a call to another subroutine which does an in-place edit of a file.

Does changing $^I(which I do for the in-place edit) screw anything up?

Thanks.

Comment on Re^4: Make select apply to modules as well

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Re^5: Make select apply to modules as well by tilly (Archbishop) on Dec 05, 2004 at 22:11 UTC
I believe that you have correctly identified the problem. This is documented, but obscurely. If you check in perlvar you'll find that $^I is the current value of the in-place edit. If you check in perlrun you'll find that -i calls select. I would suggest avoiding $^I and writing the code that it saves for you. Alternately call select before setting $^I to get the currently selected filehandle, and then call select when the edit is done so that $^I and select play nice with each other.	[reply]
Re^6: Make select apply to modules as well by richz (Beadle) on Dec 05, 2004 at 22:13 UTC
Thanks bro. After looking some more I realized it probably does affect something because when doing the in-place edit a print without specifying a filehandle prints to the file. I am just going to save the filehandle before I do the in-place edit and then restore it. Thanks again.	[reply]
Re^5: Make select apply to modules as well by gaal (Parson) on Dec 06, 2004 at 07:35 UTC
Glad you found the problem. Consider using Tie::File as a practical alternative if you're doing in-place editing. (In some cases it may not be appropriate -- read the docs -- but for many cases, it is.)	[reply]