which converts to a combination of substr and o3tl::starts_with Change-Id: I5b01a181b9e6bee3483e4f49f1a9426abcc682d0 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132458 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>