Future: feature idea: "use Module as M"

test/modules/cassella/use-module-as.bad

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+use-module-as.chpl:5: syntax error: near 'as'

test/modules/cassella/use-module-as.chpl

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+module JohannGambolputtyDeVonAusfernSchplendenSchlitterAppleBangerVonHautkopftOfUlm {
+  var k = 7;
+}
+
+use JohannGambolputtyDeVonAusfernSchplendenSchlitterAppleBangerVonHautkopftOfUlm as J;
+
+writeln(J.k);

test/modules/cassella/use-module-as.future

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+feature request: Allow "use Module as M" to reference Module.x as M.x
+
+That is, "use Module as M" or "use moduleX.moduleY.Module as M" would
+allow referencing the symbols of the named module through the name M,
+without importing the module's symbols into the current scope.
+
+
+Discussion of several and diverse interpretations and approaches:
+
+https://github.com/chapel-lang/chapel/pull/3900

test/modules/cassella/use-module-as.good

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+7