Generate contributor list dynamically.

.gitignore

 /_site/
+/diffoscope.git/
+/_data/

Makefile

-all:
+GIT = git --git-dir=$(GIT_DIR)/.git
+GIT_DIR = diffoscope.git
+
+DATA = _data/contributors.yml
+
+all: $(DATA)
 	jekyll build --verbose --trace
 
+$(GIT_DIR):
+	git clone https://salsa.debian.org/reproducible-builds/diffoscope.git $@
+
+_data/contributors.yml: $(GIT_DIR)
+	mkdir -p "$(dir $@)"
+	echo "# This file is automatically generated" > $@
+	$(GIT) authors --list | cut -d '<' -f1 | sort | \
+		grep -v root | grep -v @ | sed -e 's@^@- @' -e 's@[ ]*$$@@' >> $@
+
 clean:
-	rm -rf _site
+	rm -rf $(GIT_DIR) $(DATA) _site

index.md

@@ -105,9 +105,4 @@ Extending *diffoscope* to support new formats is quite straightforward in most c
 
 ## Contributors
 
-Lunar, Reiner Herrmann, Chris Lamb, Helmut Grohne, Holger Levsen,
-Mattia Rizzolo, Daniel Kahn Gillmor, Paul Gevers, Peter De Wachter,
-Yasushi SHOJI, Clemens Lang, Ed Maste, Joachim Breitner, Mike McQuaid.
-Baptiste Daroussin, Levente Polyak, Ximin Luo, Maria Glukhova, Daniel Shahaf,
-Juliana Oliveira Rodrigues.
-
+{{ site.data.contributors|array_to_sentence_string:"and" }}.