diff -r 95e99c4d10d3 -r eb234d5d695c tests/run-tests.py
--- a/tests/run-tests.py	Sun May 01 18:18:31 2011 +0100
+++ b/tests/run-tests.py	Fri May 06 20:13:10 2011 +0200
@@ -104,6 +104,7 @@
     'jobs': ('HGTEST_JOBS', 1),
     'timeout': ('HGTEST_TIMEOUT', 180),
     'port': ('HGTEST_PORT', 20059),
+    'shell': ('HGTEST_SHELL', '/bin/sh'),
 }
 
 def parseargs():
@@ -149,6 +150,8 @@
         help="retest failed tests")
     parser.add_option("-S", "--noskips", action="store_true",
         help="don't report skip tests verbosely")
+    parser.add_option("--shell", type="string",
+        help="shell to use (default: $%s or %s)" % defaults['shell'])
     parser.add_option("-t", "--timeout", type="int",
         help="kill errant tests after TIMEOUT seconds"
              " (default: $%s or %d)" % defaults['timeout'])
@@ -168,8 +171,8 @@
     parser.add_option('--extra-config-opt', action="append",
                       help='set the given config opt in the test hgrc')
 
-    for option, default in defaults.items():
-        defaults[option] = int(os.environ.get(*default))
+    for option, (envvar, default) in defaults.items():
+        defaults[option] = type(default)(os.environ.get(envvar, default))
     parser.set_defaults(**defaults)
     (options, args) = parser.parse_args()
 
@@ -177,6 +180,10 @@
     if 'java' in sys.platform or '__pypy__' in sys.modules:
         options.pure = True
 
+    if not (os.path.isfile(options.shell) and
+            os.access(options.shell, os.X_OK)):
+        parser.error('--shell must be executable')
+
     if options.with_hg:
         if not (os.path.isfile(options.with_hg) and
                 os.access(options.with_hg, os.X_OK)):
@@ -527,7 +534,7 @@
             os.write(fd, l)
         os.close(fd)
 
-        cmd = '/bin/sh "%s"' % name
+        cmd = '"%s" "%s"' % (options.shell, name)
         vlog("# Running", cmd)
         exitcode, output = run(cmd, wd, options, replacements)
         # do not merge output if skipped, return hghave message instead
@@ -917,6 +924,9 @@
         name = '--' + opt.replace('_', '-')
         if value is True:
             opts.append(name)
+        elif isinstance(value, list):
+            for v in value:
+                opts.append(name + '=' + str(v))
         elif value is not None:
             opts.append(name + '=' + str(value))