All of the following satisfy your criteria, are valid and normal Perl code, and would get a semicolon incorrectly inserted based on your criteria: 
use softsemicolon;

$x = $a
   + $b;

$x = 1
    if $condition;

$x = 1 unless  $condition1
           && $condition2;
Yes in cases 1 and 2; In case 3 if the scanner always returns previous token (one token lookahead) this will be detected (no Perl statement can start with && )

As for "valid and normal" your millage may vary. For people who would want to use this pragma it is definitely not "valid and normal". Both 1 and 2 looks to me like frivolities without any useful meaning or justification. Moreover, case 1 can be rewritten as: 

$x =($a
   + $b);

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The case 3 actually happens in Perl most often with regular if and here the opening bracket is obligatory: 
if ( ( $str=~/a\[s\]/ || $str =~/h\[s\]/ ) 
   && ( $str... )   ){
   ....
   }

[download]
Also Python-inspired fascination with eliminating all brackets does not do here any good 
  1
  2 $a=$b=1;
  3 $x=1 if $a==1
  4      && $b=2;

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should generally be written 
  2 $a=$b=1;
  3 $x=1 if( $a==1
  4      && $b=2);

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I was surprised that the case without brackets was accepted by the syntax analyser. Because how would you interpret the statement $x=1 if $a{$b++}; without brackets is unclear to me. It has dual meaning: should be a syntax error in one case 
$x=1 if $a{
   $b++
};

[download]
and the test for an element of hash $a in another.

In reply to Re^12: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff by likbez
in thread What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff by likbez

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