document spark option

[barcat.git] / barcat

diff --git a/barcat b/barcat
index 9e4d0ae0feaf3de2ba64284b3f014f108b38a35b..a7c67ee11cb88a543c502da66036f4f7d1bf823f 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -47,7 +47,7 @@ GetOptions(\%opt,
                $opt{'graph-format'} = substr $_[1], 0, 1;
        },
        'spark:s' => sub {
-               $opt{spark} = [split //, $_[1] || '������▂▃▄▅▆▇█'];
+               $opt{spark} = [split //, $_[1] || '▁▂▃▄▅▆▇█'];
        },
        'stat|s!',
        'signal-stat=s',
@@ -356,6 +356,11 @@ or 68% of all entries.
 
 =back
 
+=item --spark
+
+Replace lines by I<sparklines>,
+single characters corresponding to input values.
+
 =item -s, --stat
 
 Total statistics after all data.