dispatch: add doctests for _earlygetopt

mercurial/dispatch.py

@@ -485,6 +485,18 b' def _earlygetopt(aliases, args):'
 
     The values are listed in the order they appear in args.
     The options and values are removed from args.
+
+    >>> args = ['x', '--cwd', 'foo', 'y']
+    >>> _earlygetopt(['--cwd'], args), args
+    (['foo'], ['x', 'y'])
+
+    >>> args = ['x', '-R', 'foo', 'y']
+    >>> _earlygetopt(['-R'], args), args
+    (['foo'], ['x', 'y'])
+
+    >>> args = ['x', '-Rbar', 'y']
+    >>> _earlygetopt(['-R'], args), args
+    (['bar'], ['x', 'y'])
     """
     try:
         argcount = args.index("--")

tests/test-doctest.py

@@ -27,6 +27,9 b' doctest.testmod(mercurial.ui)'
 import mercurial.url
 doctest.testmod(mercurial.url)
 
+import mercurial.dispatch
+doctest.testmod(mercurial.dispatch)
+
 import mercurial.encoding
 doctest.testmod(mercurial.encoding)