| line | true | false | branch | 
 
| 17 | 0 | 0 | unless open FILEREAD, "@_" | 
 
| 27 | 0 | 0 | unless open FILEREADLINE, "$_[0]" | 
 
| 36 | 0 | 0 | unless open FILEBULKREAD, "$_[0]" | 
 
| 48 | 0 | 0 | unless open LASTLINES, "$_[0]" | 
 
| 59 | 0 | 0 | unless open FIRSTLINES, "$_[0]" | 
 
| 72 | 0 | 0 | unless open ODD, $_[0] | 
 
| 85 | 0 | 0 | unless open EVEN, "$_[0]" | 
 
| 99 | 0 | 0 | unless open FILEGREP, "$_[0]" | 
 
| 102 | 0 | 0 | if $_ =~ /$_[1]/ | 
 
| 109 | 0 | 0 | unless open FILEGREPNO, "$_[0]" | 
 
| 113 | 0 | 0 | if $_ =~ /$_[1]/ | 
 
| 120 | 0 | 0 | unless open GREPREPLACE, "$_[0]" | 
 
| 123 | 0 | 0 | if ($_ =~ /$_[1]/) | 
 
| 137 | 0 | 0 | unless open FILETAIL, "$_[0]" | 
 
| 142 | 0 | 0 | if length $lines[-1] > 0 | 
 
| 147 | 0 | 0 | if ($start = !$end) |