From 2ccc1bdd379690eeaf36181b49ec01dc294f0e36 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Wed, 30 May 2007 02:44:41 +0000
Subject: [PATCH] For bug #61732, support -flag in USE (instead of just +flag).
  Given the current default USE_ORDER, -flag in IUSE has no effect. (trunk
 r6671)

svn path=/main/branches/2.1.2/; revision=6672
---
 bin/ebuild.sh  | 2 +-
 bin/emerge     | 2 +-
 pym/portage.py | 7 ++++++-
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index 2590fcd9a..25e41ec9d 100755
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -1574,7 +1574,7 @@ if [ "${EBUILD_PHASE}" != "depend" ]; then
 	# Make IUSE defaults backward compatible with all the old shell code.
 	iuse_temp=""
 	for x in ${IUSE} ; do
-		if [[ ${x} == +* ]]; then
+		if [[ ${x} == +* ]] || [[ ${x} == -* ]] ; then
 			iuse_temp="${iuse_temp} ${x:1}"
 		else
 			iuse_temp="${iuse_temp} ${x}"
diff --git a/bin/emerge b/bin/emerge
index 7b5e6f378..03446c7c8 100755
--- a/bin/emerge
+++ b/bin/emerge
@@ -596,7 +596,7 @@ def genericdict(mylist):
 
 def filter_iuse_defaults(iuse):
 	for flag in iuse:
-		if flag.startswith("+"):
+		if flag.startswith("+") or flag.startswith("-"):
 			yield flag[1:]
 		else:
 			yield flag
diff --git a/pym/portage.py b/pym/portage.py
index 83edfeaa9..ecf14c703 100644
--- a/pym/portage.py
+++ b/pym/portage.py
@@ -1682,7 +1682,12 @@ class config:
 		if mydb:
 			slot, iuse = mydb.aux_get(self.mycpv, ["SLOT", "IUSE"])
 			cpv_slot = "%s:%s" % (self.mycpv, slot)
-			pkginternaluse = [x[1:] for x in iuse.split() if x.startswith("+")]
+			pkginternaluse = []
+			for x in iuse.split():
+				if x.startswith("+"):
+					pkginternaluse.append(x[1:])
+				elif x.startswith("-"):
+					pkginternaluse.append(x)
 			pkginternaluse = " ".join(pkginternaluse)
 		if pkginternaluse != self.configdict["pkginternal"].get("USE", ""):
 			self.configdict["pkginternal"]["USE"] = pkginternaluse
-- 
2.26.2