Re: [w3c/payment-request] UAs should not alter value string (addresses #624) (#631)

marcoscaceres commented on this pull request.



> @@ -1391,6 +1391,9 @@
         </dt>
         <dd>
           A <a>valid decimal monetary value</a> containing a monetary amount.
+          User agents should not alter values provided as input; for example,

To be clear, if we were to leave the "SHOULD NOT", it opens the door to the possibility that an implementer could change the value... that would be very very bad and would lead to all sorts of interop chaos. 

Instead, implementers should follow what the algorithms says - which make it clear, if you follow them, that the value never gets changed.  

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