3 files changed, 33 insertions, 3 deletions
diff --git a/portato/backend/flags.py b/portato/backend/flags.py
index a623973..f171356 100644
--- a/portato/backend/flags.py
+++ b/portato/backend/flags.py
@@ -192,6 +192,27 @@ def invert_use_flag (flag):
 	else:
 		return "-"+flag
 
+def sort_use_flag_list (flaglist):
+	"""
+	Sorts a list of useflags. If a use flag starts with "+" or "-" this one is ignored for the matter of sorting.
+	This functions sorts the list itself - thus does not create a new one. But for convenience it returns the list too.
+
+	@param flaglist: the list of useflags
+	@type flaglist: string[]
+
+	@returns: the sorted list (Note: it is the same as the one passed in)
+	@rtype: string[]
+	"""
+	
+	def flag_key (flag):
+			if flag.startswith(("+","-")):
+				return flag[1:]
+			else:
+				return flag
+	
+	flaglist.sort(key = flag_key)
+	return flaglist
+
 def set_use_flag (pkg, flag):
 	"""Sets the useflag for a given package.
 	
diff --git a/portato/backend/package.py b/portato/backend/package.py
index a7f41d7..4d84e90 100644
--- a/portato/backend/package.py
+++ b/portato/backend/package.py
@@ -268,11 +268,13 @@ class Package (_Package):
 		@returns: the reason for masking the package
 		@rtype: string"""
 		
-	def get_iuse_flags (self, installed = False):
+	def get_iuse_flags (self, installed = False, keep = False):
 		"""Returns a list of _all_ useflags for this package, i.e. all useflags you can set for this package.
 		
 		@param installed: do not take the ones stated in the ebuild, but the ones it has been installed with
 		@type installed: boolean
+		@param keep: keep the "+" or "-" signs for forced flags
+		@type keep: boolean
 
 		@returns: list of use-flags
 		@rtype: string[]"""
diff --git a/portato/backend/portage/package.py b/portato/backend/portage/package.py
index e5e5603..bc157cf 100644
--- a/portato/backend/portage/package.py
+++ b/portato/backend/portage/package.py
@@ -130,13 +130,20 @@ class PortagePackage (Package):
 		else:
 			return reason
 
-	def get_iuse_flags (self, installed = False):
+	def get_iuse_flags (self, installed = False, keep = False):
 		if installed or not self.is_in_system():
 			tree = self._settings.vartree
 		else:
 			tree = self._settings.porttree
 		
-		return list(set(self.get_package_settings("IUSE", tree = tree).split()).difference(self.forced_flags))
+		flags = self.get_package_settings("IUSE", tree = tree).split()
+
+		if not keep: # remove "+"/"-"
+			for ctr, f in enumerate(flags):
+				if f.startswith(("+","-")):
+					flags[ctr] = f[1:]
+		
+		return list(set(flags).difference(self.forced_flags))
 
 	def get_matched_dep_packages (self, depvar):
 		# change the useflags, because we have internally changed some, but not made them visible for portage