# HG changeset patch
# User Thomas Arendsen Hein <thomas@intevation.de>
# Date 1186830467 -7200
# Node ID 88803a69b24ac0ea4298470b70a67043a61a2ff2
# Parent  6e040f6c2c9ce1b961a77ab6834c228009f4e673
fancyopts: Copy list arguments in command table before modifying.

Before this, executing
commands.dispatch(['log', '-r', '0'])
commands.dispatch(['log', '-r', 'tip'])
would look like:
hg log -r 0
hg log -r 0 -r tip

Reported by TK Soh, patch by Alexis S. L. Carvalho

diff --git a/mercurial/fancyopts.py b/mercurial/fancyopts.py
--- a/mercurial/fancyopts.py
+++ b/mercurial/fancyopts.py
@@ -9,7 +9,10 @@ def fancyopts(args, options, state):
     for s, l, d, c in options:
         pl = l.replace('-', '_')
         map['-'+s] = map['--'+l] = pl
-        state[pl] = d
+        if isinstance(d, list):
+            state[pl] = d[:]
+        else:
+            state[pl] = d
         dt[pl] = type(d)
         if (d is not None and d is not True and d is not False and
             not callable(d)):