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diff --git a/t/t0040-parse-options.sh b/t/t0040-parse-options.sh
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+#!/bin/sh
+#
+# Copyright (c) 2007 Johannes Schindelin
+#
+
+test_description='our own option parser'
+
+. ./test-lib.sh
+
+cat > expect << EOF
+usage: test-parse-options <options>
+
+ --yes get a boolean
+ -D, --no-doubt begins with 'no-'
+ -B, --no-fear be brave
+ -b, --boolean increment by one
+ -4, --or4 bitwise-or boolean with ...0100
+ --neg-or4 same as --no-or4
+
+ -i, --integer <n> get a integer
+ -j <n> get a integer, too
+ -m, --magnitude <n> get a magnitude
+ --set23 set integer to 23
+ -t <time> get timestamp of <time>
+ -L, --length <str> get length of <str>
+ -F, --file <file> set file to <file>
+
+String options
+ -s, --string <string>
+ get a string
+ --string2 <str> get another string
+ --st <st> get another string (pervert ordering)
+ -o <str> get another string
+ --list <str> add str to list
+
+Magic arguments
+ --quux means --quux
+ -NUM set integer to NUM
+ + same as -b
+ --ambiguous positive ambiguity
+ --no-ambiguous negative ambiguity
+
+Standard options
+ --abbrev[=<n>] use <n> digits to display SHA-1s
+ -v, --verbose be verbose
+ -n, --dry-run dry run
+ -q, --quiet be quiet
+
+EOF
+
+test_expect_success 'test help' '
+ test_must_fail test-parse-options -h > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_i18ncmp expect output
+'
+
+mv expect expect.err
+
+cat >expect.template <<EOF
+boolean: 0
+integer: 0
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+check() {
+ what="$1" &&
+ shift &&
+ expect="$1" &&
+ shift &&
+ sed "s/^$what .*/$what $expect/" <expect.template >expect &&
+ test-parse-options $* >output 2>output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+}
+
+check_i18n() {
+ what="$1" &&
+ shift &&
+ expect="$1" &&
+ shift &&
+ sed "s/^$what .*/$what $expect/" <expect.template >expect &&
+ test-parse-options $* >output 2>output.err &&
+ test_must_be_empty output.err &&
+ test_i18ncmp expect output
+}
+
+check_unknown() {
+ case "$1" in
+ --*)
+ echo error: unknown option \`${1#--}\' >expect ;;
+ -*)
+ echo error: unknown switch \`${1#-}\' >expect ;;
+ esac &&
+ cat expect.err >>expect &&
+ test_must_fail test-parse-options $* >output 2>output.err &&
+ test_must_be_empty output &&
+ test_cmp expect output.err
+}
+
+check_unknown_i18n() {
+ case "$1" in
+ --*)
+ echo error: unknown option \`${1#--}\' >expect ;;
+ -*)
+ echo error: unknown switch \`${1#-}\' >expect ;;
+ esac &&
+ cat expect.err >>expect &&
+ test_must_fail test-parse-options $* >output 2>output.err &&
+ test_must_be_empty output &&
+ test_i18ncmp expect output.err
+}
+
+test_expect_success 'OPT_BOOL() #1' 'check boolean: 1 --yes'
+test_expect_success 'OPT_BOOL() #2' 'check boolean: 1 --no-doubt'
+test_expect_success 'OPT_BOOL() #3' 'check boolean: 1 -D'
+test_expect_success 'OPT_BOOL() #4' 'check boolean: 1 --no-fear'
+test_expect_success 'OPT_BOOL() #5' 'check boolean: 1 -B'
+
+test_expect_success 'OPT_BOOL() is idempotent #1' 'check boolean: 1 --yes --yes'
+test_expect_success 'OPT_BOOL() is idempotent #2' 'check boolean: 1 -DB'
+
+test_expect_success 'OPT_BOOL() negation #1' 'check boolean: 0 -D --no-yes'
+test_expect_success 'OPT_BOOL() negation #2' 'check boolean: 0 -D --no-no-doubt'
+
+test_expect_success 'OPT_BOOL() no negation #1' 'check_unknown_i18n --fear'
+test_expect_success 'OPT_BOOL() no negation #2' 'check_unknown_i18n --no-no-fear'
+
+test_expect_success 'OPT_BOOL() positivation' 'check boolean: 0 -D --doubt'
+
+test_expect_success 'OPT_INT() negative' 'check integer: -2345 -i -2345'
+
+test_expect_success 'OPT_MAGNITUDE() simple' '
+ check magnitude: 2345678 -m 2345678
+'
+
+test_expect_success 'OPT_MAGNITUDE() kilo' '
+ check magnitude: 239616 -m 234k
+'
+
+test_expect_success 'OPT_MAGNITUDE() mega' '
+ check magnitude: 104857600 -m 100m
+'
+
+test_expect_success 'OPT_MAGNITUDE() giga' '
+ check magnitude: 1073741824 -m 1g
+'
+
+test_expect_success 'OPT_MAGNITUDE() 3giga' '
+ check magnitude: 3221225472 -m 3g
+'
+
+cat > expect << EOF
+boolean: 2
+integer: 1729
+magnitude: 16384
+timestamp: 0
+string: 123
+abbrev: 7
+verbose: 2
+quiet: no
+dry run: yes
+file: prefix/my.file
+EOF
+
+test_expect_success 'short options' '
+ test-parse-options -s123 -b -i 1729 -m 16k -b -vv -n -F my.file \
+ >output 2>output.err &&
+ test_cmp expect output &&
+ test_must_be_empty output.err
+'
+
+cat > expect << EOF
+boolean: 2
+integer: 1729
+magnitude: 16384
+timestamp: 0
+string: 321
+abbrev: 10
+verbose: 2
+quiet: no
+dry run: no
+file: prefix/fi.le
+EOF
+
+test_expect_success 'long options' '
+ test-parse-options --boolean --integer 1729 --magnitude 16k \
+ --boolean --string2=321 --verbose --verbose --no-dry-run \
+ --abbrev=10 --file fi.le --obsolete \
+ >output 2>output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+test_expect_success 'missing required value' '
+ test_expect_code 129 test-parse-options -s &&
+ test_expect_code 129 test-parse-options --string &&
+ test_expect_code 129 test-parse-options --file
+'
+
+cat > expect << EOF
+boolean: 1
+integer: 13
+magnitude: 0
+timestamp: 0
+string: 123
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+arg 00: a1
+arg 01: b1
+arg 02: --boolean
+EOF
+
+test_expect_success 'intermingled arguments' '
+ test-parse-options a1 --string 123 b1 --boolean -j 13 -- --boolean \
+ > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat > expect << EOF
+boolean: 0
+integer: 2
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+test_expect_success 'unambiguously abbreviated option' '
+ test-parse-options --int 2 --boolean --no-bo > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+test_expect_success 'unambiguously abbreviated option with "="' '
+ test-parse-options --int=2 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+test_expect_success 'ambiguously abbreviated option' '
+ test_expect_code 129 test-parse-options --strin 123
+'
+
+cat > expect << EOF
+boolean: 0
+integer: 0
+magnitude: 0
+timestamp: 0
+string: 123
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+test_expect_success 'non ambiguous option (after two options it abbreviates)' '
+ test-parse-options --st 123 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat > typo.err << EOF
+error: did you mean \`--boolean\` (with two dashes ?)
+EOF
+
+test_expect_success 'detect possible typos' '
+ test_must_fail test-parse-options -boolean > output 2> output.err &&
+ test_must_be_empty output &&
+ test_cmp typo.err output.err
+'
+
+cat > typo.err << EOF
+error: did you mean \`--ambiguous\` (with two dashes ?)
+EOF
+
+test_expect_success 'detect possible typos' '
+ test_must_fail test-parse-options -ambiguous > output 2> output.err &&
+ test_must_be_empty output &&
+ test_cmp typo.err output.err
+'
+
+cat > expect <<EOF
+boolean: 0
+integer: 0
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+arg 00: --quux
+EOF
+
+test_expect_success 'keep some options as arguments' '
+ test-parse-options --quux > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat > expect <<EOF
+boolean: 0
+integer: 0
+magnitude: 0
+timestamp: 1
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: yes
+dry run: no
+file: (not set)
+arg 00: foo
+EOF
+
+test_expect_success 'OPT_DATE() works' '
+ test-parse-options -t "1970-01-01 00:00:01 +0000" \
+ foo -q > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat > expect <<EOF
+Callback: "four", 0
+boolean: 5
+integer: 4
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+test_expect_success 'OPT_CALLBACK() and OPT_BIT() work' '
+ test-parse-options --length=four -b -4 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat > expect <<EOF
+Callback: "not set", 1
+EOF
+
+test_expect_success 'OPT_CALLBACK() and callback errors work' '
+ test_must_fail test-parse-options --no-length > output 2> output.err &&
+ test_i18ncmp expect output &&
+ test_i18ncmp expect.err output.err
+'
+
+cat > expect <<EOF
+boolean: 1
+integer: 23
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+test_expect_success 'OPT_BIT() and OPT_SET_INT() work' '
+ test-parse-options --set23 -bbbbb --no-or4 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+test_expect_success 'OPT_NEGBIT() and OPT_SET_INT() work' '
+ test-parse-options --set23 -bbbbb --neg-or4 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat > expect <<EOF
+boolean: 6
+integer: 0
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+test_expect_success 'OPT_BIT() works' '
+ test-parse-options -bb --or4 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+test_expect_success 'OPT_NEGBIT() works' '
+ test-parse-options -bb --no-neg-or4 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+test_expect_success 'OPT_COUNTUP() with PARSE_OPT_NODASH works' '
+ test-parse-options + + + + + + > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat > expect <<EOF
+boolean: 0
+integer: 12345
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+test_expect_success 'OPT_NUMBER_CALLBACK() works' '
+ test-parse-options -12345 > output 2> output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat >expect <<EOF
+boolean: 0
+integer: 0
+magnitude: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+file: (not set)
+EOF
+
+test_expect_success 'negation of OPT_NONEG flags is not ambiguous' '
+ test-parse-options --no-ambig >output 2>output.err &&
+ test_must_be_empty output.err &&
+ test_cmp expect output
+'
+
+cat >>expect <<'EOF'
+list: foo
+list: bar
+list: baz
+EOF
+test_expect_success '--list keeps list of strings' '
+ test-parse-options --list foo --list=bar --list=baz >output &&
+ test_cmp expect output
+'
+
+test_expect_success '--no-list resets list' '
+ test-parse-options --list=other --list=irrelevant --list=options \
+ --no-list --list=foo --list=bar --list=baz >output &&
+ test_cmp expect output
+'
+
+test_done