Bug 575893 - fixed CharSequence.toString contracts

An implementation of CharSequence has to fullfill the
CharSequence.toString contract.

Change-Id: I23022218dba00c1e7c0ad32cfbfe358981481371
Signed-off-by: Joerg Kubitz <jkubitz-eclipse@gmx.de>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.text/+/185262
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Mickael Istria <mistria@redhat.com>
3 files changed