Handle KeyboardInterrupt with less annoying spew to stderr.

redo-ifchange.py

@@ -48,12 +48,15 @@ if not vars.TARGET:
     err('redo-ifchange: error: must be run from inside a .do\n')
     sys.exit(100)
 
-want_build = []
-for t in sys.argv[1:]:
+try:
+    want_build = []
+    for t in sys.argv[1:]:
         mkdirp('%s/.redo' % vars.BASE)
         add_dep(vars.TARGET, 'm', t)
         if dirty_deps(t, depth = ''):
             want_build.append(t)
 
-if want_build:
+    if want_build:
         os.execvp('redo', ['redo', '--'] + want_build)
+except KeyboardInterrupt:
+    sys.exit(200)

redo-ifcreate.py

@@ -8,10 +8,13 @@ if not vars.TARGET:
     err('redo-ifcreate: error: must be run from inside a .do\n')
     sys.exit(100)
 
-for t in sys.argv[1:]:
+try:
+    for t in sys.argv[1:]:
         mkdirp('%s/.redo' % vars.BASE)
         if os.path.exists(t):
             err('redo-ifcreate: error: %r already exists\n' % t)
             sys.exit(1)
         else:
             add_dep(vars.TARGET, 'c', t)
+except KeyboardInterrupt:
+    sys.exit(200)

redo.py

@@ -118,9 +118,10 @@ if not vars.DEPTH:
     dirnames = [os.path.dirname(p) for p in exenames]
     os.environ['PATH'] = ':'.join(dirnames) + ':' + os.environ['PATH']
 
-retcode = 0
-startdir = os.getcwd()
-for t in targets:
+try:
+    retcode = 0
+    startdir = os.getcwd()
+    for t in targets:
         if os.path.exists('%s/all.do' % t):
             # t is a directory, but it has a default target
             t = '%s/all' % t
@@ -131,4 +132,6 @@ for t in targets:
         except BuildError, e:
             err('%s\n' % e)
             retcode = 1
-sys.exit(retcode)
+    sys.exit(retcode)
+except KeyboardInterrupt:
+    sys.exit(200)