saving uncommitted changes in /etc prior to emerge run

etc-update.conf

@@ -0,0 +1,82 @@
+# /etc/etc-update.conf: config file for `etc-update` utility
+# edit the lines below to your liking
+
+# mode - 0 for text, 1 for menu (support incomplete)
+# note that you need dev-util/dialog installed
+mode="0"
+
+# Whether to clear the term prior to each display
+#clear_term="yes"
+clear_term="no"
+
+# Whether trivial/comment changes should be automerged
+eu_automerge="yes"
+
+# arguments used whenever rm is called
+rm_opts="-i"
+
+# arguments used whenever mv is called
+mv_opts="-i"
+
+# arguments used whenever cp is called
+cp_opts="-i"
+
+# set the pager for use with diff commands (this will
+# cause the PAGER environment variable to be ignored)
+#pager="less"
+
+# For emacs-users (see NOTE_2)
+# diff_command="eval emacs -nw --eval=\'\(ediff\ \"%file1\"\ \"%file2\"\)\'"
+#using_editor=1
+
+# vim-users: you CAN use vimdiff for diff_command. (see NOTE_1 and NOTE_2)
+#diff_command="vim -d %file1 %file2"
+#using_editor=1
+
+# If using colordiff instead of diff, the less -R option may be required
+# for correct display (see 'pager' setting above).
+diff_command="diff -uN %file1 %file2"
+using_editor=0
+
+
+# vim-users: don't use vimdiff for merging (see NOTE_1)
+merge_command="sdiff -s -o %merged %orig %new"
+
+# EXPLANATION
+#
+# pager:
+#
+# Examples of pager usage:
+#	pager="cat"     # don't use a pager
+#	pager="less -E" # less
+#	pager="more"    # more
+#
+#
+# diff_command:
+#
+# Arguments:
+#	%file1	[REQUIRED]
+#	%file2	[REQUIRED]
+#
+# Examples of diff_command:
+#	diff_command="diff -uN %file1 %file2"	# diff
+#	diff_command="vim -d %file1 %file2"		# vimdiff
+#
+#
+# merge_command:
+#
+# Arguments:
+#	%orig	[REQUIRED]
+#   %new    [REQUIRED]
+#	%merged	[REQUIRED]
+#
+# Examples of merge_command:
+#	merge_command="sdiff -s -o %merged %old %new"	# sdiff
+#
+
+# NOTE_1: Editors such as vim/vimdiff are not usable for the merge_command
+# because it is not known what filenames the produced files have (the user can
+# choose while using those programs)
+
+# NOTE_2: Make sure using_editor is set to "1" when using an editor as
+# diff_command!