Currently oe.utils.contains(X, "A", true, false) will return true for substring 
matches,
e.g. if X = "ABC". This is not what most users expect from the function.

In the common OE use of this function there is the case of "touchscreen" and 
"screen" being
used as independent variables. Whilst it could be argued there isn't a problem 
in that
specific case (touchscreens are usually on screens), there is no substring 
usage of this
function is OE-Core so this patch changes the behaviour to match only full 
strings.

It also fixes a bug where duplicate entries would confuse multiple matches, e.g.
contains(X, ["A", "B"], ...) would match X = "A A" which is clearly wrong.

Signed-off-by: Richard Purdie <[email protected]>
---
diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py
index 4287eee..b3473d3 100644
--- a/meta/lib/oe/utils.py
+++ b/meta/lib/oe/utils.py
@@ -35,16 +35,15 @@ def version_less_or_equal(variable, checkvalue, truevalue, 
falsevalue, d):
         return falsevalue
 
 def contains(variable, checkvalues, truevalue, falsevalue, d):
-    val = bb.data.getVar(variable,d,1)
+    val = d.getVar(variable, True)
     if not val:
         return falsevalue
-    matches = 0
-    if type(checkvalues).__name__ == "str":
-        checkvalues = [checkvalues]
-    for value in checkvalues:
-        if val.find(value) != -1:
-            matches = matches + 1
-    if matches == len(checkvalues):
+    val = set(val.split())
+    if isinstance(checkvalues, basestring):
+        checkvalues = set(checkvalues.split())
+    else:
+        checkvalues = set(checkvalues)
+    if checkvalues.issubset(val):
         return truevalue
     return falsevalue
 



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