saving uncommitted changes in /etc prior to emerge run

cups/._cfg0000_cups-browsed.conf

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+# Which protocols will we use to discover printers on the network?
+# Can use DNSSD and/or CUPS, or 'none' for neither.
+BrowseRemoteProtocols DNSSD,CUPS
+
+# Which protocols will we use to broadcast shared local printers to the network?
+# Can use DNSSD and/or CUPS, or 'none' for neither.
+# Only CUPS is actually supported, as DNSSD is done by CUPS itself (we ignore
+# DNSSD in this directive).
+# BrowseLocalProtocols none
+
+# Settings of this directive apply to both BrowseRemoteProtocols and
+# BrowseLocalProtocols.
+# Can use DNSSD and/or CUPS, or 'none' for neither.
+# BrowseProtocols none
+
+# Only browse remote printers from selected servers
+# BrowseAllow All
+# BrowseAllow cups.example.com
+# BrowseAllow 192.168.1.12
+# BrowseAllow 192.168.1.0/24
+# BrowseAllow 192.168.1.0/255.255.255.0
+
+# Use BrowsePoll to poll a particular CUPS server
+# BrowsePoll cups.example.com
+# BrowsePoll cups.example.com:631
+# BrowsePoll cups.example.com:631/version=1.1
+
+# Use DomainSocket to access the local CUPS daemon via another than the
+# default domain socket
+# DomainSocket /var/lib/run/cups/cups.sock
+
+# Set CreateIPPPrinterQueues to "Yes" to let cups-browsed discover IPP
+# network printers (native printers, not CUPS queues) with known page
+# description languages (PWG Raster, PDF, PostScript, PCL XL, PCL
+# 5c/e) in the local network and auto-create PPD-less print queues for
+# them (using a System V interface script to control the filter
+# chain). Clients have to IPP-poll the capabilities of the printer and
+# send option settings as standard IPP attributes. We do not poll the
+# capabilities by ourselves to not wake up the printer from
+# power-saving mode when creating the queues. Jobs have to be sent in
+# PDF format. Other formats are not accepted. This functionality is
+# primarily for mobile devices running CUPS to not need a printer
+# setup tool nor a collection of printer drivers and PPDs.
+
+# CreateIPPPrinterQueues Yes
+
+# The AutoShutdown directive specifies whether cups-browsed should
+# automatically terminate when it has no local raw queues set up
+# pointing to any discovered remote printers (auto shutdown
+# mode). Setting it to "On" activates the auto-shutdown mode, setting
+# it to "Off" deactiivates it (the default). The special mode "avahi"
+# turns auto shutdown off while avahi-daemon is running and on when
+# avahi-daemon stops. This allows running cups-browsed on-demand when
+# avahi-daemon is run on-demand.
+
+# AutoShutdown Off
+# AutoShutdown On
+# AutoShutdown avahi
+
+# The AutoShutdownTimeout directive specifies after how many seconds
+# without local raw queues set up pointing to any discovered remote
+# printers cups-browsed should actually shut down in auto shutdown
+# mode. Default is 30 seconds, 0 means immediate shutdown.
+
+# AutoShutdownTimeout 30
+
+# Unknown directives are ignored, also unknown values.