in log4j-jakarta-web/src/main/java/org/apache/logging/log4j/web/Log4jWebInitializerImpl.java [176:186]
private List<URI> getConfigURIs(final String location) {
final String[] parts = location.split(",");
final List<URI> uris = new ArrayList<>(parts.length);
for (final String part : parts) {
final URI uri = getConfigURI(part);
if (uri != null) {
uris.add(uri);
}
}
return uris;
}