[perl #115834] Successfull match $_[0] =~ /foo(.+)/ overrides $_[0] if function called as foo($1)

This is an issue which comes up perenially, see

http://thread.gmane.org/gmane.comp.lang.perl.perl5.porters/1607

for an earlier 'bug' report.

I do feel that the current behaviour is confusing, if every time a new
programmer hits a seeming bug it requires a detailed explanation from
one of the perl5-porters about why it's meant to work like that.  If
it's really unchangeable then calling foo($1) should issue a warning.

---
via perlbug:  queue: perl5 status: open
https://rt.perl.org:443/rt3/Ticket/Display.html?id=115834

• [perl #115834] Successfull match $_[0] =~ /foo(.+)/ overrides $_[0] if function called as foo($1) by sp @ smartspb . net
• Re: [perl #115834] Successfull match $_[0] =~ /foo(.+)/ overrides$_[0] if function called as foo($1) by Lukas Mai
• Re: [perl #115834] Successfull match $_[0] =~ /foo(.+)/ overrides$_[0]if function called as foo($1) by Dr.Ruud
• Re: [perl #115834] Successfull match $_[0] =~ /foo(.+)/overrides$_[0] if function called as foo($1) by Jesse Luehrs
• [perl #115834] Successfull match $_[0] =~ /foo(.+)/ overrides $_[0] if function called as foo($1) by Ed Avis via RT
• Re: [perl #115834] Successfull match $_[0] =~ /foo(.+)/ overrides$_[0] if function called as foo($1) by Jesse Luehrs
• [perl #115834] Successfull match $_[0] =~ /foo(.+)/ overrides $_[0] if function called as foo($1) by Ed Avis via RT
• Smoke [blead] v5.25.5-64-g1c56654 FAIL(X) os/390 25.00 (2964/) by Yaroslav Kuzmin
• Re: Smoke [blead] v5.25.5-64-g1c56654 FAIL(X) os/390 25.00 (2964/) by Karl Williamson