From a9881a28da795ce2285187062bfaa822d4e55a18 Mon Sep 17 00:00:00 2001
From: Brian Dolbec <dolsen@gentoo.org>
Date: Thu, 7 Jun 2012 00:57:44 -0700
Subject: [PATCH] fix a bug in enalyze rebuild where it did not consider IUSE
 defaults for calculating the use flag differences. Discovered by mingdao in
 #gentoo.

---
 pym/gentoolkit/enalyze/lib.py | 23 +++++++++++++++--------
 pym/gentoolkit/flag.py        | 16 ++++++++++++++++
 2 files changed, 31 insertions(+), 8 deletions(-)

diff --git a/pym/gentoolkit/enalyze/lib.py b/pym/gentoolkit/enalyze/lib.py
index 015e23b..9dc28a3 100644
--- a/pym/gentoolkit/enalyze/lib.py
+++ b/pym/gentoolkit/enalyze/lib.py
@@ -14,7 +14,7 @@ from gentoolkit.dbapi import PORTDB, VARDB
 from gentoolkit import errors
 from gentoolkit.keyword import reduce_keywords
 from gentoolkit.flag import (reduce_flags, get_flags, get_all_cpv_use,
-	filter_flags, get_installed_use, get_iuse)
+	filter_flags, get_installed_use, get_iuse, defaulted_flags)
 #from gentoolkit.package import Package
 
 import portage
@@ -65,10 +65,12 @@ class FlagAnalyzer(object):
 		@return (plus, minus, unset) sets of USE flags
 		"""
 		installed = set(self.get_used(cpv, self.target))
-		iuse =  set(reduce_flags(self.get_flags(cpv)))
-		return self._analyse(installed, iuse)
+		_iuse = self.get_flags(cpv)
+		iuse =  set(reduce_flags(_iuse))
+		iuse_defaults = defaulted_flags(_iuse)
+		return self._analyse(installed, iuse, iuse_defaults)
 
-	def _analyse(self, installed, iuse):
+	def _analyse(self, installed, iuse, iuse_defaults):
 		"""Analyzes the supplied info and returns the flag settings
 		that differ from the defaults
 
@@ -78,6 +80,9 @@ class FlagAnalyzer(object):
 		@param iuse: the current ebuilds IUSE
 		"""
 		defaults = self.system.intersection(iuse)
+		# update defaults with iuse_defaults
+		defaults.update(iuse_defaults['+'])
+		defaults = defaults.difference(iuse_defaults['-'])
 		usedflags = iuse.intersection(set(installed))
 		if self.filter_defaults:
 			plus = usedflags.difference(defaults)
@@ -98,10 +103,12 @@ class FlagAnalyzer(object):
 		@return (plus, minus, unset) sets of USE flags
 		"""
 		installed = set(self.pkg_used(pkg))
-		print("installed =", installed)
-		iuse =  set(reduce_flags(self.pkg_flags(pkg)))
-		print("iuse =", iuse)
-		return self._analyse(installed, iuse)
+		#print("installed =", installed)
+		_iuse =  self.pkg_flags(pkg)
+		iuse =  set(reduce_flags(_iuse))
+		iuse_defaults = defaulted_flags(_iuse)
+		#print("iuse =", iuse)
+		return self._analyse(installed, iuse, iuse_defaults)
 
 	def pkg_used(self, pkg):
 		if self.target == "USE":
diff --git a/pym/gentoolkit/flag.py b/pym/gentoolkit/flag.py
index b5c8228..0377a81 100644
--- a/pym/gentoolkit/flag.py
+++ b/pym/gentoolkit/flag.py
@@ -13,6 +13,7 @@ __all__ = (
 	'get_installed_use',
 	'reduce_flag',
 	'reduce_flags',
+	'defaulted_flags',
 	'filter_flags',
 	'get_all_cpv_use',
 	'get_flags'
@@ -84,6 +85,21 @@ def reduce_flags(the_list):
 	return r
 
 
+def defaulted_flags(the_list):
+	"""Absolute value function for a USE flag list
+
+	@type the_list: list
+	@param the_list: the use flags to get defaulted ones from.
+	@rtype: dict of lists
+	@return defaulted USE flags {'+': [...], '-': [...]}
+	"""
+	r={"+":[], "-": []}
+	for member in the_list:
+		if member[0] in  ["+","-"]:
+			r[member[0]].append(member[1:])
+	return r
+
+
 def filter_flags(use, use_expand_hidden, usemasked, useforced):
 	"""Filter function to remove hidden or otherwise not normally
 	visible USE flags from a list.
-- 
2.26.2