http://qs1969.pair.com?node_id=11140582


in reply to Re^4: perl -d myprog autostarts - but only in one specific directory
in thread perl -d myprog autostarts - but only in one specific directory

-e shows CON exists under windows:

C:\Users\peter.jones\Downloads\TempData>perl -le "print -e 'CON'" 1 C:\Users\peter.jones\Downloads\TempData>dir CON Directory of \\. File Not Found

in other words, that fix should work, if I understand it correctly.

crossposted to https://github.com/Perl/perl5/pull/19349#discussion_r787107781

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Re^6: perl -d myprog autostarts - but only in one specific directory
by bliako (Monsignor) on Jan 18, 2022 at 21:35 UTC

    yes, you are right.

    Can there be some magic behind that -e 'con' which obviously did not kick in in the Unix case? I tried to use logic in the absence of a windows machine, but that failed me, being m$! "CON" (like LPT, AUX and some others) are all DOS reserved words and can not be the name of files, unless doing some hack (which will confuse Perl!). So, I am not sure that your dir CON failed because of that restriction or because of not existing a CON file. In any event, your perl oneliner is proof enough.

      Sorry, yes, my point with the dir CON was to show there wasn't a filesystem file in the active directory called CON, that the -e "con" really was finding the magic CON, not some local file or directory that happened to be named CON. I guess I should have added more verbiage to explain that.