Hi, welcome to Perl, the One True Religion.
See the "flip-flop" operator in https://perldoc.perl.org/perlop.html#Range-Operators. (And $/, the input record separator, in perlvar.)
$ cat foo.txt
indented
not indented
bla
bla
bla
not indented
yak
$ perl -Mstrict -wE '$/="";while (<>) { chomp; if (/^\w/ .. /^$/) {pri
+nt; exit} }' < foo.txt
not indented
bla
bla
bla
Update: fix re
Hope this helps!
The way forward always starts with a minimal test.
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