From 2a13c6e8811c2b1dea72b37d68dc9289128cc72d Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 26 Oct 2021 18:32:12 +0100
Subject: [PATCH] yellow: process bag image

---
 Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 121d838..3ee9600 100644
--- a/Makefile
+++ b/Makefile
@@ -7,17 +7,17 @@ all:	pumpkin-books.pdf
 
 # Don't print the ps, printers (eg ours!) don't always have the fonts
 
-pumpkin-books.ps: pumpkin-books.ps.pl
+pumpkin-books.ps: pumpkin-books.ps.pl bag.pgm
 	./$< >$@.new && mv -f $@.new $@
 
-pumpkin-books.pdf: pumpkin-books.ps bag.pgm
+pumpkin-books.pdf: pumpkin-books.ps
 	gs -q -dNOPAUSE -dBATCH -dPDFSETTINGS=/prepress \
 		-sDEVICE=pdfwrite -sOutputFile=$@ $<
 
 bag.pgm: Sack_-_Sac_-_Zak_brown.svg Makefile
 	rsvg-convert -f png -o $@.tmp.png $<
 	set -o pipefail; set -e;			\
-	pngtopnm <$@.tmp.png				\
+	pngtopnm <$@.tmp.png -mix -background 'white'	\
 	| ppmtopgm 					\
 	| pnmdepth 255 					\
 	| pnmnoraw >$@.tmp.new
-- 
2.30.2