sub a{printf"%7d "x@_."$f\n",@_ if@_}sub f{@l=@w=@c=();if(open z,$f){w
+hile(<z>
){$c[0]+=length if$c;$l[0]++if$l&/\n/;$w[0]+=s/\S+//g if$w;}close z;$o
+[0]+=$l[
0]if$l;$p[0]+=$w[0]if$w;$q[0]+=$c[0]if$c}else{$e=warn"$0: $f: $!\n"}a@
+l,@w,@c}
for(@ARGV){exit if/^-u$/&&warn"Usage: $0 [ -l ] [ -w ] [ -c ] file ...
+\n";eval
"\$$1=\@$1=0,next"if/^-([lwc])$/;push@f,$_}push@f,'-'if!@f;$l=$w=$c=1u
+nless$l+
$w+$c;for$f(@f){&f}$f='total',a@o,@p,@q if@f>1;exit$e

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In reply to /bin/wc - exact behaviour by MarkM

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