in reply to Re^6: Perl 5.34 is released
in thread Perl 5.34 is released

I would guess there's a special case when the brace is the first character in the regex.

$ perl -wE 'say $]; say "Match literal" if "{,3}" =~ m<{,3}> && "x" !~
+ m<{,3}>;'
5.030001
Match literal

$ perl -wE 'say $]; say "Match space" if " {,3}" =~ m< {,3}> && "x" !~
+ m< {,3}>;'
Unescaped left brace in regex is illegal here in regex; marked by <-- 
+HERE in m/ { <-- HERE ,3}/ at -e line 1.

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Re^8: Perl 5.34 is released
by LanX (Saint) on Jun 03, 2021 at 13:13 UTC
    What's happening is that the space must be repeated.

       $  perl -wE 'say $]; say "Match space" if "   " =~ m< {0,3}>' 
 5.028002

Match space
$

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    Your error is thrown because {,3} is illegal as quantifier for Perl <5.34

    Cheers Rolf
    (addicted to the Perl Programming Language :)
    Wikisyntax for the Monastery

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