#!/bin/rc

rfork e
switch($#*){
case 1
       RE=`{echo *.c | sed 's/ /|/g; s/.*/^(&)$/'}
       if(~ $RE '^(*.c)$')
               LIST=`{builtin cd $1; ls *.c }
       if not
               LIST=`{builtin cd $1; ls *.c | grep -v ''$RE''}
       echo $LIST | sed 's/\.c//g; s/ +/|/g'
case *
       exit 'usage'
}
exit ''

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