From 55e386bf0c0b6a98ce295366bb4f31c00f048e16 Mon Sep 17 00:00:00 2001
From: Tom Willemsen <tom@ryuslash.org>
Date: Fri, 15 Feb 2013 00:47:01 +0100
Subject: [PATCH] Add reverse target

This target takes files whose installed versions are newer than those
in the current working directory and copies them there.
---
 dotfiles.mk | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/dotfiles.mk b/dotfiles.mk
index aaabad3..92e35a1 100644
--- a/dotfiles.mk
+++ b/dotfiles.mk
@@ -16,28 +16,34 @@ define older =
 $(shell if [ "$(1)" -ot "$(DESTDIR)/$(1)" ]; then echo "older"; fi)
 endef
 
-install-objects=$(addprefix install-,$(objects))
-uninstall-objects=$(addprefix uninstall-,$(objects))
 check-objects=$(addprefix check-,$(objects))
+install-objects=$(addprefix install-,$(objects))
+reverse-objects=$(addprefix reverse-,$(objects))
+uninstall-objects=$(addprefix uninstall-,$(objects))
 
-install-modules=$(addprefix install-,$(modules))
-uninstall-modules=$(addprefix uninstall-,$(modules))
 check-modules=$(addprefix check-,$(modules))
+install-modules=$(addprefix install-,$(modules))
+reverse-modules=$(addprefix reverse-,$(modules))
+uninstall-modules=$(addprefix uninstall-,$(modules))
 
 .PHONY: all install uninstall check uninstall $(modules) \
 	$(install-objects) $(uninstall-objects) $(check-objects) \
-	$(install-modules) $(uninstall-modules) $(check-modules)
+	$(install-modules) $(uninstall-modules) $(check-modules) \
+	$(reverse) $(reverse-objects) $(reverse-modules)
 all: $(modules) $(objects)
 
 ifeq ($(MAKEROOT),y)
 check: $(check-modules) $(check-objects)
 install: $(install-modules) $(install-objects)
+reverse: $(reverse-modules) $(reverse-objects)
 uninstall: $(uninstall-modules) $(uninstall-objects)
 else
 check:
 	@$(MAKE) -s -C ../ check
 install:
 	@$(MAKE) -s -C ../ install
+reverse:
+	@$(MAKE) -s -C ../ reverse
 uninstall:
 	@$(MAKE) -C ../ uninstall
 endif
@@ -55,6 +61,15 @@ $(install-objects): install-%: %
 $(install-modules): install-%:
 	@$(MAKE) -s -C $* install
 
+$(reverse-objects): reverse-%:
+	@$(if $(call older,$*), \
+		echo -e "$(FG_GRE)reversing $(FG_YEL)$(DESTDIR)/$* $(CLR_RE)"; \
+		cp -a "$(DESTDIR)/$*" "$*", \
+		echo -e "$(FG_RED)not reversing $(FG_YEL)$*$(CLR_RE)")
+
+$(reverse-modules): reverse-%:
+	@$(MAKE) -s -C $* reverse
+
 $(uninstall-objects): uninstall-%:
 	@$(if $(call older,$*), \
 		echo -e "$(FG_RED)not uninstalling $(FG_YEL)$*$(CLR_RE)", \