From 4ef9c2b48f9fcdc5b8c347367566a987a9893aa2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Ankarstr=C3=B6m?= <john@ankarstrom.se>
Date: Thu, 24 Jun 2021 10:55:19 +0200
Subject: README.t: Add PDF bookmarks, links

---
 Makefile     |  7 +++++--
 README.t     | 37 ++++++++++++++++++++++++++++++++++++-
 t/Makefile   |  7 +++++--
 toc/Makefile |  6 ++++--
 4 files changed, 50 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index 485c8e3..cfdab83 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,12 @@
+TROFF ?= troff
+PDFROFF ?= troff | dpost | ps2pdf -
+
 all: README.pdf hacking.pdf
 
 hacking.pdf: hacking.t g.tmac
 	perl -pe '$$_=`$$_` if s/^\!//' hacking.t |\
-	troff -x3 | dpost | ps2pdf - > hacking.pdf
+	$(PDFROFF) > hacking.pdf
 
 README.pdf: README.t g.tmac
 	TROFFONTS=/usr/pkg/share/fonts/X11/TTF/ \
-	<README.t toc/toc troff -x3 | dpost | ps2pdf - > README.pdf
+	<README.t toc/toc $(PDFROFF) > README.pdf
diff --git a/README.t b/README.t
index 83b076e..e8337c6 100644
--- a/README.t
+++ b/README.t
@@ -1,9 +1,43 @@
 .so g.tmac
 .so gx.tmac
 .so toc/toc.tmac
-.papersize letter
+.mediasize letter
 .fp 0 M DejaVuSansMono ttf
 .
+.eo
+.de he
+. nr a +1
+. h
+\X'PDFMark: Bookmark 0 \\$*'\A'\na'
+. br
+. sp -1
+\$*
+. te .the \na \n% \$*
+..
+.
+.de se
+. nr a +1
+. s
+\X'PDFMark: Bookmark 1 \\$*'\A'\na'
+. br
+. sp -1
+\$*
+. te .the \na \n% \\h'18p'\$*
+..
+.
+.\" the -- toc entry
+.de the
+. nr _a \$1
+. nr _p \$2
+. shift 2
+. ta \n(.luR
+. tc .
+\T'\n(_a'\$*	\n(_p\T
+. tc
+. br
+..
+.ec
+.
 .\" configure header and footer
 .eo
 .de @h
@@ -37,6 +71,7 @@ John Ankarström
 .i "TABLE OF CONTENTS"
 .sp 4p
 .@e
+\X'SetLinkBorder: 0 0 0'\c
 .to
 .sp 0.5i
 .ns
diff --git a/t/Makefile b/t/Makefile
index f278324..49eaac5 100644
--- a/t/Makefile
+++ b/t/Makefile
@@ -1,6 +1,9 @@
 .SUFFIXES: .t .T .pdf
 TEST != ls *.t | sed 's/t$$/T/'
 
+TROFF ?= troff
+PDFROFF ?= troff | dpost | ps2pdf -
+
 all: $(TEST)
 
 g.tmac: ../g.tmac
@@ -9,7 +12,7 @@ g.tmac: ../g.tmac
 
 .t.T: g.tmac t.tmac
 	@echo -- $< -----------------------
-	@troff -x3 $< >/dev/null
+	@<$< $(TROFF) >/dev/null
 
 .t.pdf: g.tmac t.tmac
-	troff -x3 $< | dpost | ps2pdf - > $@
+	<$< $(PDFROFF) > $@
diff --git a/toc/Makefile b/toc/Makefile
index d6d2a6e..2cc92ac 100644
--- a/toc/Makefile
+++ b/toc/Makefile
@@ -1,5 +1,7 @@
+TROFF ?= groff -Tps
+
 README.pdf: README.t toc.tmac toc
-	<README.t ./toc groff -Tps | ps2pdf - > README.pdf
+	<README.t ./toc $(TROFF) | ps2pdf - > README.pdf
 
 example.pdf: example.t toc.tmac toc
-	<example.t ./toc groff -Tps | ps2pdf - > example.pdf
+	<example.t ./toc $(TROFF) | ps2pdf - > example.pdf
-- 
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