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#! /usr/bin/perl
my $input = $ARGV[0];
my $source = `clang-format $input`;
# for_each_dive (...) and Q_FOREACH and friends...
$source =~ s/^(.*each.*\(.*\).*)\n\s*{\s*$/$1 {/img;
$source =~ s/(?:\G|^)(\s+[^#\/*].*each.*\(.*\))\n(\s*)([^{}\s])/$1\n\t$2$3/img;
$source =~ s/^(\s*struct[^()\n]*)\n\s*{\s*$/$1 {/img;
$source =~ s/^(\s*static\s+struct[^()\n]*)\n\s*{\s*$/$1 {/img;
$source =~ s/^(\s*union[^()\n]*)\n\s*{\s*$/$1 {/img;
$source =~ s/^(\s*static\s+union[^()\n]*)\n\s*{\s*$/$1 {/img;
$source =~ s/^(\s*class.*)\n\s*{\s*$/$1 {/img;
$source =~ s/^(\S*::\S*.*)\n\s*: /$1 : /img;
$source =~ s/(?:\G|^)[ ]{6}/\t/mg;
$source =~ s/(?:\G|^)(\t*)[ ]{4}"/$1\t"/mg;
# don't put line break before the last single term argument of a
# calculation
$source =~ s/(?:\G|^)(.*[+-])\n\s*(\S*\;)$/$1 $2/mg;
open (DIFF, "| diff -u $input -");
print DIFF $source ;
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