[PATCH 1 of 4] hbisect: add two private revset descriptions

[Yann E. MORIN]

# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998 at anciens.enib.fr>
# Date 1316639690 -7200
# Node ID 85607e1e24e03e75410739cfee8465c3520ef0cd
# Parent  510184e5a09eb09be23b55bc1191c6ca77af05d5
hbisect: add two private revset descriptions

This patch adds two new revset descriptions:
 - goods: list the range of 'pruned' and 'good' csets
 - bads: ditto for bad csets

Those internal descriptions will be needed to pretty-print the
bisection status of changesets.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at anciens.enib.fr>

diff --git a/mercurial/hbisect.py b/mercurial/hbisect.py
--- a/mercurial/hbisect.py
+++ b/mercurial/hbisect.py
@@ -184,10 +184,10 @@
         #   - skipped
         # But in case of irrelevant goods/bads, we also need to
         # include them.
-        pg = 'bisect(good)::bisect(good)'   # Pruned goods
-        pb = 'bisect(bad)::bisect(bad)'     # Pruned bads
-        ps = 'bisect(skip)'                 # Pruned skipped
-        pruned = '( (%s) | (%s) | (%s) )' % (pg, pb, ps)
+        goods = 'bisect(good)::bisect(good)'   # Pruned good csets
+        bads  = 'bisect(bad)::bisect(bad)'     # Pruned bad csets
+        skips = 'bisect(skip)'                 # Pruned skipped csets
+        pruned = '( (%s) | (%s) | (%s) )' % (goods, bads, skips)
 
         # 'untested' is all cset that are- in 'range', but not in 'pruned'
         untested = '( (%s) - (%s) )' % (range, pruned)
@@ -209,5 +209,13 @@
         elif status == 'ignored':
             return [c.rev() for c in repo.set(ignored)]
 
+        # Revset descriptions for private use
+        # Although not documented, they are nonetheless useable by
+        # the user
+        elif status == "__goods":
+            return [c.rev() for c in repo.set(goods)]
+        elif status == "__bads":
+            return [c.rev() for c in repo.set(bads)]
+
         else:
             raise error.ParseError(_('invalid bisect state'))