Normalize expression variables (#1146) #875

Job	Run time
copyright	3m 17s
build	5m 13s
checkstyle	3m 28s
shellcheck	3m 9s
vscode-ext	3m 58s
javadoc	4m 9s
cli/windows-amd64	6m 12s
tests/cli-linux	3m 58s
tests/others-linux	5m 54s
spotbugs	5m 55s
cli/linux-amd64	5m 33s
tests/cli-windows	4m 16s
tests/linker-linux	5m 20s
tests/cli-functional-linux	4m 45s
tests/archetype-windows	6m 7s
tests/linker-windows	5m 45s
tests/cli-functional-windows	5m 4s
cli/darwin-amd64	7m 13s
tests/archetype-linux	5m 18s
tests/others-windows	7m 44s
cli/binaries	9s
tests/results	4s
gate	2s
	1h 42m 33s

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