implement a txt preview fallback for the case that ttf is not support
implement a txt preview fallback for the case that ttf is not support

nextcloud/server,lrytz/core,cernbox/core,whitekiba/server,lrytz/core,lrytz/core,IljaN/core,pixelipo/server,pmattern/server,xx621998xx/server,jbicha/server,jbicha/server,michaelletzgus/nextcloud-server,sharidas/core,nextcloud/server,endsguy/server,endsguy/server,pollopolea/core,IljaN/core,sharidas/core,pollopolea/core,cernbox/core,michaelletzgus/nextcloud-server,jbicha/server,pmattern/server,Ardinis/server,endsguy/server,pmattern/server,nextcloud/server,Ardinis/server,Ardinis/server,xx621998xx/server,pixelipo/server,michaelletzgus/nextcloud-server,IljaN/core,pixelipo/server,andreas-p/nextcloud-server,whitekiba/server,xx621998xx/server,pmattern/server,pollopolea/core,Ardinis/server,andreas-p/nextcloud-server,jbicha/server,lrytz/core,nextcloud/server,owncloud/core,sharidas/core,whitekiba/server,Ardinis/server,michaelletzgus/nextcloud-server,bluelml/core,andreas-p/nextcloud-server,phil-davis/core,pollopolea/core,jbicha/server,lrytz/core,bluelml/core,pmattern/server,IljaN/core,owncloud/core,pixelipo/server,owncloud/core,bluelml/core,xx621998xx/server,endsguy/server,whitekiba/server,endsguy/server,whitekiba/server,bluelml/core,owncloud/core,pollopolea/core,cernbox/core,pixelipo/server,andreas-p/nextcloud-server,cernbox/core,owncloud/core,sharidas/core,xx621998xx/server,IljaN/core,andreas-p/nextcloud-server,bluelml/core,sharidas/core,cernbox/core