Reduce verbosity in twistd.log on the try server.

pylibs/buildbot/process/buildstep.py

 # -*- test-case-name: buildbot.test.test_steps -*-
 
 from zope.interface import implements
 from twisted.internet import reactor, defer, error
 from twisted.protocols import basic
 from twisted.spread import pb
 from twisted.python import log
 from twisted.python.failure import Failure
 from twisted.web.util import formatFailure
 
@@ skipping 990 matching lines @@
         startCommand().
         """
         self.logfiles[logname] = filename
 
     def startCommand(self, cmd, errorMessages=[]):
         """
         @param cmd: a suitable RemoteCommand which will be launched, with
                     all output being put into our self.stdio_log LogFile
         """
         log.msg("ShellCommand.startCommand(cmd=%s)" % (cmd,))
-        log.msg("  cmd.args = %r" % (cmd.args))
+        args = cmd.args
+        if "patch" in cmd.args:
+          # Don't print the patch in the logs, it's often too large and not
+          # useful.
+          args = cmd.args.copy()
+          # This is usually a tuple so convert it to a list to be able to modify
+          # it.
+          patch = list(args['patch'][:])
+          patch[1] = "(%s bytes)" % len(patch[1])
+          args['patch'] = patch
+        log.msg("  cmd.args = %r" % (args))
         self.cmd = cmd # so we can interrupt it
         self.step_status.setText(self.describe(False))
 
         # stdio is the first log
         self.stdio_log = stdio_log = self.addLog("stdio")
         cmd.useLog(stdio_log, True)
         for em in errorMessages:
             stdio_log.addHeader(em)
             # TODO: consider setting up self.stdio_log earlier, and have the
             # code that passes in errorMessages instead call
@@ skipping 130 matching lines @@
         # this is good enough for most steps, but it can be overridden to
         # get more control over the displayed text
         self.step_status.setText(self.getText(cmd, results))
         self.step_status.setText2(self.maybeGetText2(cmd, results))
 
 # (WithProperties used to be available in this module)
 from buildbot.process.properties import WithProperties
 _hush_pyflakes = [WithProperties]
 del _hush_pyflakes