Move setproctitle() stuff into title.py.

This removes another instance of magical code running at module import
time.  And the process title wasn't really part of the state database
anyway.

Unfortunately this uncovered a bug: the recent change to use
'python -S' makes it not find the setproctitle module if installed.

My goodness, I hate the horrible python easy_install module gunk that
makes startup linearly slower the more modules you have installed,
whether you import them or not, if you don't use -S.  But oh well,
we're stuck with it for now.

bin/default.do

@@ -18,13 +18,15 @@ case $1 in
 		read py <../redo/whichpython
 		cmd=${1#redo-}
 		cat >$3 <<-EOF
-			#!$py -S
+			#!$py
 			import sys, os;
 			exe = os.path.realpath(os.path.abspath(sys.argv[0]))
 			exedir = os.path.dirname(exe)
 			sys.path.insert(0, os.path.join(exedir, '../lib'))
 			sys.path.insert(0, os.path.join(exedir, '..'))
+			import redo.title
 			import redo.cmd_$cmd
+			redo.title.auto()
 			redo.cmd_$cmd.main()
 		EOF
 		chmod a+x "$3"

redo/state.py

@@ -3,17 +3,6 @@ import cycles, env
 from helpers import unlink, close_on_exec, join
 from logs import warn, debug2, debug3
 
-# When the module is imported, change the process title.
-# We do it here because this module is imported by all the scripts.
-try:
-    from setproctitle import setproctitle
-except ImportError:
-    pass
-else:
-    cmdline = sys.argv[:]
-    cmdline[0] = os.path.splitext(os.path.basename(cmdline[0]))[0]
-    setproctitle(" ".join(cmdline))
-
 SCHEMA_VER = 2
 TIMEOUT = 60
 

redo/title.py

@@ -0,0 +1,17 @@
+import os, sys
+
+# FIXME: setproctitle module is only usable if *not* using python -S,
+# and without -S, python startup time is annoyingly longer
+try:
+    from setproctitle import setproctitle
+except ImportError:
+    def setproctitle(name):
+        pass
+
+
+def auto():
+    """Automatically clean up the title as seen by 'ps', based on argv."""
+    exe = sys.argv[0]
+    exename, ext = os.path.splitext(os.path.basename(sys.argv[0]))
+    title = ' '.join([exename] + sys.argv[1:])
+    setproctitle(title)