Make it possible to pass options to advent from within regression-test loads.

tests/Makefile

@@ -0,0 +1,46 @@
+# Test-suite makefile for reposurgeon
+
+# Use absolute path so tests that change working directory still use 
+# scripts from parent directory.  Note that using $PWD seems to fail
+# here under Gitlab's CI environment.
+PATH := $(realpath ..):$(realpath .):${PATH}
+
+# Defeat annoying behavior under Mac OS X - builtin echo doesn't do -n
+ECHO := /bin/echo
+
+all: regress
+	@echo "=== No diff output is good news."
+
+.SUFFIXES: .chk
+
+clean:
+	rm -fr *~ adventure.text
+
+# Show summary lines for all tests.
+testlist:
+	@grep '^##' *.log
+listcheck:
+	@for f in *.log; do \
+	    if ( head -3 $$f | grep -q '^ *##' ); then :; else echo "$$f needs a description"; fi; \
+	done
+
+# General regression testing of commands and output; look at the *.log and
+# corresponding *.chk files to see which tests this runs.
+TESTLOADS := $(shell ls -1 *.log | sed '/.log/s///')
+buildregress:
+	@for file in $(TESTLOADS); do \
+	    echo "Remaking $${file}.chk"; \
+	    OPTS=`sed -n /#options:/s///p <$${file}.log`; \
+	    advent $$OPTS <$${file}.log >$${file}.chk 2>&1 || exit 1; \
+	done
+regress:
+	@for file in $(TESTLOADS); do \
+	    $(ECHO) -n "  $${file} "; grep '##' $${file}.log  || echo ' ## (no description)'; \
+	    OPTS=`sed -n /#options:/s///p <$${file}.log`; \
+	    if advent $$OPTS < $${file}.log >/tmp/regress$$$$ 2>&1; \
+	    then diff --text -u $${file}.chk /tmp/regress$$$$ || exit 1; \
+	    else echo "*** Nonzero return status on $${file}!"; exit 1; fi \
+	done
+	@rm -f /tmp/regress$$$$
+
+# end

tests/oldstyle.log

@@ -0,0 +1,5 @@
+## Simple quit
+#options: -o
+n
+quit
+yes