From 197d1b16dbc129b43560d449d7c73a48120205c1 Mon Sep 17 00:00:00 2001
From: Ben Ransford <ben@ransford.org>
Date: Wed, 19 Mar 2014 11:28:59 -0700
Subject: [PATCH] make snapshot

---
 Makefile.include | 7 ++++++-
 README.md        | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/Makefile.include b/Makefile.include
index 82261d0..c3e66d4 100644
--- a/Makefile.include
+++ b/Makefile.include
@@ -88,7 +88,7 @@ else ifneq ($(wildcard .svn/entries),)
 endif
 
 # .PHONY names all targets that aren't filenames
-.PHONY: all clean pdf view
+.PHONY: all clean pdf view snapshot
 
 all: pdf $(AFTERALL)
 
@@ -128,6 +128,11 @@ endif
 	@while grep -q "Rerun to" $*.log; do \
 		$(PDFLATEX) $* $(ERRFILTER); done
 
+DRAFTS := $(PDFTARGETS:.pdf=-$(REVISION).pdf)
+$(DRAFTS): %-$(REVISION).pdf: %.pdf
+	cp $< $@
+snapshot: $(DRAFTS)
+
 clean:
 	$(RM) $(foreach T,$(PDFTARGETS:.pdf=), \
 		$(T).out $(T).pdf $(T).blg $(T).bbl \
diff --git a/README.md b/README.md
index 3d488a9..a5b7f22 100644
--- a/README.md
+++ b/README.md
@@ -21,3 +21,5 @@ Features:
   command you can use in your LaTeX markup to include a current revision
   identifier.  Useful for circulating drafts for comment.
 * `make view` opens your typeset document.
+* To generate a draft with the revision number in its filename (to pass
+  around), use `make snapshot`.