Make use of --chars parameter

include/gmon.py

@@ -62,6 +62,8 @@ class PluginData(object):
             self.fmt = "xgp"
         self.name = cmdargs['<command>']
         self.args = cmdargs['<args>']
+        if cmdargs['--chars']:
+            self.maxlen = int(cmdargs['--chars'])
 
 
 class Subcommand(object):