[thirdparty/git.git] / t / t4034-diff-words.sh

#!/bin/sh

test_description='word diff colors'

. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-diff.sh

cat >pre.simple <<-\EOF
	h(4)

	a = b + c
EOF
cat >post.simple <<-\EOF
	h(4),hh[44]

	a = b + c

	aa = a

	aeff = aeff * ( aaa )
EOF
pre=$(git rev-parse --short $(git hash-object pre.simple))
post=$(git rev-parse --short $(git hash-object post.simple))
cat >expect.letter-runs-are-words <<-EOF
	<BOLD>diff --git a/pre b/post<RESET>
	<BOLD>index $pre..$post 100644<RESET>
	<BOLD>--- a/pre<RESET>
	<BOLD>+++ b/post<RESET>
	<CYAN>@@ -1,3 +1,7 @@<RESET>
	h(4),<GREEN>hh<RESET>[44]

	a = b + c<RESET>

	<GREEN>aa = a<RESET>

	<GREEN>aeff = aeff * ( aaa<RESET> )
EOF
cat >expect.non-whitespace-is-word <<-EOF
	<BOLD>diff --git a/pre b/post<RESET>
	<BOLD>index $pre..$post 100644<RESET>
	<BOLD>--- a/pre<RESET>
	<BOLD>+++ b/post<RESET>
	<CYAN>@@ -1,3 +1,7 @@<RESET>
	h(4)<GREEN>,hh[44]<RESET>

	a = b + c<RESET>

	<GREEN>aa = a<RESET>

	<GREEN>aeff = aeff * ( aaa )<RESET>
EOF

word_diff () {
	pre=$(git rev-parse --short $(git hash-object pre)) &&
	post=$(git rev-parse --short $(git hash-object post)) &&
	test_must_fail git diff --no-index "$@" pre post >output &&
	test_decode_color <output >output.decrypted &&
	sed -e "2s/index [^ ]*/index $pre..$post/" expect >expected
	test_cmp expected output.decrypted
}

test_language_driver () {
	lang=$1
	test_expect_success "diff driver '$lang'" '
		cp "$TEST_DIRECTORY/t4034/'"$lang"'/pre" \
			"$TEST_DIRECTORY/t4034/'"$lang"'/post" \
			"$TEST_DIRECTORY/t4034/'"$lang"'/expect" . &&
		echo "* diff='"$lang"'" >.gitattributes &&
		word_diff --color-words
	'
}

test_expect_success setup '
	git config diff.color.old red &&
	git config diff.color.new green &&
	git config diff.color.func magenta
'

test_expect_success 'set up pre and post with runs of whitespace' '
	cp pre.simple pre &&
	cp post.simple post
'

test_expect_success 'word diff with runs of whitespace' '
	cat >expect <<-EOF &&
		<BOLD>diff --git a/pre b/post<RESET>
		<BOLD>index $pre..$post 100644<RESET>
		<BOLD>--- a/pre<RESET>
		<BOLD>+++ b/post<RESET>
		<CYAN>@@ -1,3 +1,7 @@<RESET>
		<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>

		a = b + c<RESET>

		<GREEN>aa = a<RESET>

		<GREEN>aeff = aeff * ( aaa )<RESET>
	EOF
	word_diff --color-words &&
	word_diff --word-diff=color &&
	word_diff --color --word-diff=color
'

test_expect_success '--word-diff=porcelain' '
	sed "s/#.*$//" >expect <<-EOF &&
		diff --git a/pre b/post
		index $pre..$post 100644
		--- a/pre
		+++ b/post
		@@ -1,3 +1,7 @@
		-h(4)
		+h(4),hh[44]
		~
		 # significant space
		~
		 a = b + c
		~
		~
		+aa = a
		~
		~
		+aeff = aeff * ( aaa )
		~
	EOF
	word_diff --word-diff=porcelain
'

test_expect_success '--word-diff=plain' '
	cat >expect <<-EOF &&
		diff --git a/pre b/post
		index $pre..$post 100644
		--- a/pre
		+++ b/post
		@@ -1,3 +1,7 @@
		[-h(4)-]{+h(4),hh[44]+}

		a = b + c

		{+aa = a+}

		{+aeff = aeff * ( aaa )+}
	EOF
	word_diff --word-diff=plain &&
	word_diff --word-diff=plain --no-color
'

test_expect_success '--word-diff=plain --color' '
	cat >expect <<-EOF &&
		<BOLD>diff --git a/pre b/post<RESET>
		<BOLD>index $pre..$post 100644<RESET>
		<BOLD>--- a/pre<RESET>
		<BOLD>+++ b/post<RESET>
		<CYAN>@@ -1,3 +1,7 @@<RESET>
		<RED>[-h(4)-]<RESET><GREEN>{+h(4),hh[44]+}<RESET>

		a = b + c<RESET>

		<GREEN>{+aa = a+}<RESET>

		<GREEN>{+aeff = aeff * ( aaa )+}<RESET>
	EOF
	word_diff --word-diff=plain --color
'

test_expect_success 'word diff without context' '
	cat >expect <<-EOF &&
		<BOLD>diff --git a/pre b/post<RESET>
		<BOLD>index $pre..$post 100644<RESET>
		<BOLD>--- a/pre<RESET>
		<BOLD>+++ b/post<RESET>
		<CYAN>@@ -1 +1 @@<RESET>
		<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
		<CYAN>@@ -3,0 +4,4 @@<RESET> <RESET><MAGENTA>a = b + c<RESET>

		<GREEN>aa = a<RESET>

		<GREEN>aeff = aeff * ( aaa )<RESET>
	EOF
	word_diff --color-words --unified=0
'

test_expect_success 'word diff with a regular expression' '
	cp expect.letter-runs-are-words expect &&
	word_diff --color-words="[a-z]+"
'

test_expect_success 'word diff with zero length matches' '
	cp expect.letter-runs-are-words expect &&
	word_diff --color-words="[a-z${LF}]*"
'

test_expect_success 'set up a diff driver' '
	git config diff.testdriver.wordRegex "[^[:space:]]" &&
	cat <<-\EOF >.gitattributes
		pre diff=testdriver
		post diff=testdriver
	EOF
'

test_expect_success 'option overrides .gitattributes' '
	cp expect.letter-runs-are-words expect &&
	word_diff --color-words="[a-z]+"
'

test_expect_success 'use regex supplied by driver' '
	cp expect.non-whitespace-is-word expect &&
	word_diff --color-words
'

test_expect_success 'set up diff.wordRegex option' '
	git config diff.wordRegex "[[:alnum:]]+"
'

test_expect_success 'command-line overrides config' '
	cp expect.letter-runs-are-words expect &&
	word_diff --color-words="[a-z]+"
'

test_expect_success 'command-line overrides config: --word-diff-regex' '
	cat >expect <<-EOF &&
		<BOLD>diff --git a/pre b/post<RESET>
		<BOLD>index $pre..$post 100644<RESET>
		<BOLD>--- a/pre<RESET>
		<BOLD>+++ b/post<RESET>
		<CYAN>@@ -1,3 +1,7 @@<RESET>
		h(4),<GREEN>{+hh+}<RESET>[44]

		a = b + c<RESET>

		<GREEN>{+aa = a+}<RESET>

		<GREEN>{+aeff = aeff * ( aaa+}<RESET> )
	EOF
	word_diff --color --word-diff-regex="[a-z]+"
'

test_expect_success '.gitattributes override config' '
	cp expect.non-whitespace-is-word expect &&
	word_diff --color-words
'

test_expect_success 'setup: remove diff driver regex' '
	test_unconfig diff.testdriver.wordRegex
'

test_expect_success 'use configured regex' '
	cat >expect <<-EOF &&
		<BOLD>diff --git a/pre b/post<RESET>
		<BOLD>index $pre..$post 100644<RESET>
		<BOLD>--- a/pre<RESET>
		<BOLD>+++ b/post<RESET>
		<CYAN>@@ -1,3 +1,7 @@<RESET>
		h(4),<GREEN>hh[44<RESET>]

		a = b + c<RESET>

		<GREEN>aa = a<RESET>

		<GREEN>aeff = aeff * ( aaa<RESET> )
	EOF
	word_diff --color-words
'

test_expect_success 'test parsing words for newline' '
	echo "aaa (aaa)" >pre &&
	echo "aaa (aaa) aaa" >post &&
	pre=$(git rev-parse --short $(git hash-object pre)) &&
	post=$(git rev-parse --short $(git hash-object post)) &&
	cat >expect <<-EOF &&
		<BOLD>diff --git a/pre b/post<RESET>
		<BOLD>index $pre..$post 100644<RESET>
		<BOLD>--- a/pre<RESET>
		<BOLD>+++ b/post<RESET>
		<CYAN>@@ -1 +1 @@<RESET>
		aaa (aaa) <GREEN>aaa<RESET>
	EOF
	word_diff --color-words="a+"
'

test_expect_success 'test when words are only removed at the end' '
	echo "(:" >pre &&
	echo "(" >post &&
	pre=$(git rev-parse --short $(git hash-object pre)) &&
	post=$(git rev-parse --short $(git hash-object post)) &&
	cat >expect <<-EOF &&
		<BOLD>diff --git a/pre b/post<RESET>
		<BOLD>index $pre..$post 100644<RESET>
		<BOLD>--- a/pre<RESET>
		<BOLD>+++ b/post<RESET>
		<CYAN>@@ -1 +1 @@<RESET>
		(<RED>:<RESET>
	EOF
	word_diff --color-words=.
'

test_expect_success '--word-diff=none' '
	echo "(:" >pre &&
	echo "(" >post &&
	pre=$(git rev-parse --short $(git hash-object pre)) &&
	post=$(git rev-parse --short $(git hash-object post)) &&
	cat >expect <<-EOF &&
		diff --git a/pre b/post
		index $pre..$post 100644
		--- a/pre
		+++ b/post
		@@ -1 +1 @@
		-(:
		+(
	EOF
	word_diff --word-diff=plain --word-diff=none
'

test_expect_success 'unset default driver' '
	test_unconfig diff.wordregex
'

test_language_driver ada
test_language_driver bibtex
test_language_driver cpp
test_language_driver csharp
test_language_driver css
test_language_driver dts
test_language_driver fortran
test_language_driver html
test_language_driver java
test_language_driver matlab
test_language_driver objc
test_language_driver pascal
test_language_driver perl
test_language_driver php
test_language_driver python
test_language_driver ruby
test_language_driver scheme
test_language_driver tex

test_expect_success 'word-diff with diff.sbe' '
	cat >pre <<-\EOF &&
	a

	b
	EOF
	cat >post <<-\EOF &&
	a

	c
	EOF
	pre=$(git rev-parse --short $(git hash-object pre)) &&
	post=$(git rev-parse --short $(git hash-object post)) &&
	cat >expect <<-EOF &&
	diff --git a/pre b/post
	index $pre..$post 100644
	--- a/pre
	+++ b/post
	@@ -1,3 +1,3 @@
	a

	[-b-]{+c+}
	EOF
	test_config diff.suppress-blank-empty true &&
	word_diff --word-diff=plain
'

test_expect_success 'word-diff with no newline at EOF' '
	printf "%s" "a a a a a" >pre &&
	printf "%s" "a a ab a a" >post &&
	pre=$(git rev-parse --short $(git hash-object pre)) &&
	post=$(git rev-parse --short $(git hash-object post)) &&
	cat >expect <<-EOF &&
	diff --git a/pre b/post
	index $pre..$post 100644
	--- a/pre
	+++ b/post
	@@ -1 +1 @@
	a a [-a-]{+ab+} a a
	EOF
	word_diff --word-diff=plain
'

test_expect_success 'setup history with two files' '
	echo "a b; c" >a.tex &&
	echo "a b; c" >z.txt &&
	git add a.tex z.txt &&
	git commit -minitial &&

	# modify both
	echo "a bx; c" >a.tex &&
	echo "a bx; c" >z.txt &&
	git commit -mmodified -a
'

test_expect_success 'wordRegex for the first file does not apply to the second' '
	echo "*.tex diff=tex" >.gitattributes &&
	test_config diff.tex.wordRegex "[a-z]+|." &&
	cat >expect <<-\EOF &&
		diff --git a/a.tex b/a.tex
		--- a/a.tex
		+++ b/a.tex
		@@ -1 +1 @@
		a [-b-]{+bx+}; c
		diff --git a/z.txt b/z.txt
		--- a/z.txt
		+++ b/z.txt
		@@ -1 +1 @@
		a [-b;-]{+bx;+} c
	EOF
	git diff --word-diff HEAD~ >actual &&
	compare_diff_patch expect actual
'

test_done
Commit	Line	Data
2e5d2003 JS	1	#!/bin/sh
	2
	3	test_description='word diff colors'
	4
	5	. ./test-lib.sh
ebd73f50	6	. "$TEST_DIRECTORY"/lib-diff.sh
2e5d2003	7
5094d158 JN	8	cat >pre.simple <<-\EOF
5094d158 JN	9	h(4)
2e5d2003	10
5094d158 JN	11	a = b + c
	12	EOF
	13	cat >post.simple <<-\EOF
	14	h(4),hh[44]
2e5d2003	15
5094d158	16	a = b + c
2e5d2003	17
5094d158	18	aa = a
2e5d2003	19
5094d158	20	aeff = aeff * ( aaa )
2e5d2003	21	EOF
0253e126	22	pre=$(git rev-parse --short $(git hash-object pre.simple))
	23	post=$(git rev-parse --short $(git hash-object post.simple))
	24	cat >expect.letter-runs-are-words <<-EOF
5094d158	25	<BOLD>diff --git a/pre b/post<RESET>
0253e126	26	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	27	<BOLD>--- a/pre<RESET>
	28	<BOLD>+++ b/post<RESET>
	29	<CYAN>@@ -1,3 +1,7 @@<RESET>
	30	h(4),<GREEN>hh<RESET>[44]
2e5d2003	31
5094d158	32	a = b + c<RESET>
2e5d2003	33
5094d158	34	<GREEN>aa = a<RESET>
2e5d2003	35
5094d158	36	<GREEN>aeff = aeff * ( aaa<RESET> )
2e5d2003	37	EOF
0253e126	38	cat >expect.non-whitespace-is-word <<-EOF
5094d158	39	<BOLD>diff --git a/pre b/post<RESET>
0253e126	40	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	41	<BOLD>--- a/pre<RESET>
	42	<BOLD>+++ b/post<RESET>
	43	<CYAN>@@ -1,3 +1,7 @@<RESET>
	44	h(4)<GREEN>,hh[44]<RESET>
2e5d2003	45
5094d158	46	a = b + c<RESET>
2e5d2003	47
5094d158	48	<GREEN>aa = a<RESET>
2e5d2003	49
5094d158	50	<GREEN>aeff = aeff * ( aaa )<RESET>
2e5d2003 JS	51	EOF
2e5d2003 JS	52
5094d158	53	word_diff () {
0253e126	54	pre=$(git rev-parse --short $(git hash-object pre)) &&
0253e126	55	post=$(git rev-parse --short $(git hash-object post)) &&
5094d158 JN	56	test_must_fail git diff --no-index "$@" pre post >output &&
5094d158 JN	57	test_decode_color <output >output.decrypted &&
0253e126	58	sed -e "2s/index [^ ]*/index $pre..$post/" expect >expected
0253e126	59	test_cmp expected output.decrypted
5094d158	60	}
2e5d2003	61
5094d158 JN	62	test_language_driver () {
	63	lang=$1
	64	test_expect_success "diff driver '$lang'" '
	65	cp "$TEST_DIRECTORY/t4034/'"$lang"'/pre" \
	66	"$TEST_DIRECTORY/t4034/'"$lang"'/post" \
	67	"$TEST_DIRECTORY/t4034/'"$lang"'/expect" . &&
	68	echo "* diff='"$lang"'" >.gitattributes &&
	69	word_diff --color-words
	70	'
	71	}
2e5d2003	72
5094d158 JN	73	test_expect_success setup '
	74	git config diff.color.old red &&
	75	git config diff.color.new green &&
	76	git config diff.color.func magenta
2e5d2003 JS	77	'
2e5d2003 JS	78
5094d158 JN	79	test_expect_success 'set up pre and post with runs of whitespace' '
	80	cp pre.simple pre &&
	81	cp post.simple post
882749a0 TR	82	'
882749a0 TR	83
5094d158	84	test_expect_success 'word diff with runs of whitespace' '
0253e126	85	cat >expect <<-EOF &&
5094d158	86	<BOLD>diff --git a/pre b/post<RESET>
0253e126	87	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	88	<BOLD>--- a/pre<RESET>
	89	<BOLD>+++ b/post<RESET>
	90	<CYAN>@@ -1,3 +1,7 @@<RESET>
	91	<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
	92
	93	a = b + c<RESET>
	94
	95	<GREEN>aa = a<RESET>
	96
	97	<GREEN>aeff = aeff * ( aaa )<RESET>
	98	EOF
	99	word_diff --color-words &&
	100	word_diff --word-diff=color &&
882749a0	101	word_diff --color --word-diff=color
882749a0 TR	102	'
882749a0 TR	103
882749a0	104	test_expect_success '--word-diff=porcelain' '
c76b84a1	105	sed "s/#.*$//" >expect <<-EOF &&
5094d158	106	diff --git a/pre b/post
0253e126	107	index $pre..$post 100644
5094d158 JN	108	--- a/pre
	109	+++ b/post
	110	@@ -1,3 +1,7 @@
	111	-h(4)
	112	+h(4),hh[44]
	113	~
	114	# significant space
	115	~
	116	a = b + c
	117	~
	118	~
	119	+aa = a
	120	~
	121	~
	122	+aeff = aeff * ( aaa )
	123	~
	124	EOF
882749a0	125	word_diff --word-diff=porcelain
882749a0 TR	126	'
882749a0 TR	127
882749a0	128	test_expect_success '--word-diff=plain' '
0253e126	129	cat >expect <<-EOF &&
5094d158	130	diff --git a/pre b/post
0253e126	131	index $pre..$post 100644
5094d158 JN	132	--- a/pre
	133	+++ b/post
	134	@@ -1,3 +1,7 @@
	135	[-h(4)-]{+h(4),hh[44]+}
882749a0	136
5094d158	137	a = b + c
882749a0	138
5094d158	139	{+aa = a+}
882749a0	140
5094d158 JN	141	{+aeff = aeff * ( aaa )+}
	142	EOF
	143	word_diff --word-diff=plain &&
882749a0	144	word_diff --word-diff=plain --no-color
882749a0 TR	145	'
882749a0 TR	146
5094d158	147	test_expect_success '--word-diff=plain --color' '
0253e126	148	cat >expect <<-EOF &&
5094d158	149	<BOLD>diff --git a/pre b/post<RESET>
0253e126	150	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	151	<BOLD>--- a/pre<RESET>
	152	<BOLD>+++ b/post<RESET>
	153	<CYAN>@@ -1,3 +1,7 @@<RESET>
	154	<RED>[-h(4)-]<RESET><GREEN>{+h(4),hh[44]+}<RESET>
882749a0	155
5094d158	156	a = b + c<RESET>
882749a0	157
5094d158	158	<GREEN>{+aa = a+}<RESET>
882749a0	159
5094d158 JN	160	<GREEN>{+aeff = aeff * ( aaa )+}<RESET>
5094d158 JN	161	EOF
882749a0	162	word_diff --word-diff=plain --color
882749a0 TR	163	'
882749a0 TR	164
a4ca1465	165	test_expect_success 'word diff without context' '
0253e126	166	cat >expect <<-EOF &&
5094d158	167	<BOLD>diff --git a/pre b/post<RESET>
0253e126	168	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	169	<BOLD>--- a/pre<RESET>
	170	<BOLD>+++ b/post<RESET>
	171	<CYAN>@@ -1 +1 @@<RESET>
	172	<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
	173	<CYAN>@@ -3,0 +4,4 @@<RESET> <RESET><MAGENTA>a = b + c<RESET>
	174
	175	<GREEN>aa = a<RESET>
	176
	177	<GREEN>aeff = aeff * ( aaa )<RESET>
	178	EOF
168eff3c	179	word_diff --color-words --unified=0
168eff3c MH	180	'
168eff3c MH	181
2b6a5417	182	test_expect_success 'word diff with a regular expression' '
5094d158	183	cp expect.letter-runs-are-words expect &&
2b6a5417	184	word_diff --color-words="[a-z]+"
2b6a5417 JS	185	'
2b6a5417 JS	186
0324e8fc PW	187	test_expect_success 'word diff with zero length matches' '
	188	cp expect.letter-runs-are-words expect &&
	189	word_diff --color-words="[a-z${LF}]*"
	190	'
	191
5094d158	192	test_expect_success 'set up a diff driver' '
ae3b970a	193	git config diff.testdriver.wordRegex "[^[:space:]]" &&
5094d158 JN	194	cat <<-\EOF >.gitattributes
	195	pre diff=testdriver
	196	post diff=testdriver
	197	EOF
80c49c3d TR	198	'
80c49c3d TR	199
98a4d87b	200	test_expect_success 'option overrides .gitattributes' '
5094d158	201	cp expect.letter-runs-are-words expect &&
80c49c3d	202	word_diff --color-words="[a-z]+"
80c49c3d TR	203	'
80c49c3d TR	204
98a4d87b	205	test_expect_success 'use regex supplied by driver' '
5094d158	206	cp expect.non-whitespace-is-word expect &&
80c49c3d	207	word_diff --color-words
80c49c3d TR	208	'
80c49c3d TR	209
5094d158	210	test_expect_success 'set up diff.wordRegex option' '
ae3b970a	211	git config diff.wordRegex "[[:alnum:]]+"
98a4d87b BSSJ	212	'
98a4d87b BSSJ	213
98a4d87b	214	test_expect_success 'command-line overrides config' '
5094d158	215	cp expect.letter-runs-are-words expect &&
98a4d87b BSSJ	216	word_diff --color-words="[a-z]+"
	217	'
	218
5094d158	219	test_expect_success 'command-line overrides config: --word-diff-regex' '
0253e126	220	cat >expect <<-EOF &&
5094d158	221	<BOLD>diff --git a/pre b/post<RESET>
0253e126	222	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	223	<BOLD>--- a/pre<RESET>
	224	<BOLD>+++ b/post<RESET>
	225	<CYAN>@@ -1,3 +1,7 @@<RESET>
	226	h(4),<GREEN>{+hh+}<RESET>[44]
882749a0	227
5094d158	228	a = b + c<RESET>
882749a0	229
5094d158	230	<GREEN>{+aa = a+}<RESET>
882749a0	231
5094d158 JN	232	<GREEN>{+aeff = aeff * ( aaa+}<RESET> )
5094d158 JN	233	EOF
882749a0 TR	234	word_diff --color --word-diff-regex="[a-z]+"
	235	'
	236
98a4d87b	237	test_expect_success '.gitattributes override config' '
5094d158	238	cp expect.non-whitespace-is-word expect &&
98a4d87b BSSJ	239	word_diff --color-words
	240	'
	241
5094d158	242	test_expect_success 'setup: remove diff driver regex' '
ff73aa40	243	test_unconfig diff.testdriver.wordRegex
98a4d87b BSSJ	244	'
98a4d87b BSSJ	245
5094d158	246	test_expect_success 'use configured regex' '
0253e126	247	cat >expect <<-EOF &&
5094d158	248	<BOLD>diff --git a/pre b/post<RESET>
0253e126	249	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	250	<BOLD>--- a/pre<RESET>
	251	<BOLD>+++ b/post<RESET>
	252	<CYAN>@@ -1,3 +1,7 @@<RESET>
	253	h(4),<GREEN>hh[44<RESET>]
98a4d87b	254
5094d158	255	a = b + c<RESET>
98a4d87b	256
5094d158	257	<GREEN>aa = a<RESET>
98a4d87b	258
5094d158 JN	259	<GREEN>aeff = aeff * ( aaa<RESET> )
5094d158 JN	260	EOF
98a4d87b BSSJ	261	word_diff --color-words
	262	'
	263
2b6a5417	264	test_expect_success 'test parsing words for newline' '
5094d158 JN	265	echo "aaa (aaa)" >pre &&
5094d158 JN	266	echo "aaa (aaa) aaa" >post &&
0253e126	267	pre=$(git rev-parse --short $(git hash-object pre)) &&
	268	post=$(git rev-parse --short $(git hash-object post)) &&
	269	cat >expect <<-EOF &&
5094d158	270	<BOLD>diff --git a/pre b/post<RESET>
0253e126	271	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	272	<BOLD>--- a/pre<RESET>
	273	<BOLD>+++ b/post<RESET>
	274	<CYAN>@@ -1 +1 @@<RESET>
	275	aaa (aaa) <GREEN>aaa<RESET>
	276	EOF
2b6a5417	277	word_diff --color-words="a+"
2b6a5417 JS	278	'
2b6a5417 JS	279
2b6a5417	280	test_expect_success 'test when words are only removed at the end' '
5094d158 JN	281	echo "(:" >pre &&
5094d158 JN	282	echo "(" >post &&
0253e126	283	pre=$(git rev-parse --short $(git hash-object pre)) &&
	284	post=$(git rev-parse --short $(git hash-object post)) &&
	285	cat >expect <<-EOF &&
5094d158	286	<BOLD>diff --git a/pre b/post<RESET>
0253e126	287	<BOLD>index $pre..$post 100644<RESET>
5094d158 JN	288	<BOLD>--- a/pre<RESET>
	289	<BOLD>+++ b/post<RESET>
	290	<CYAN>@@ -1 +1 @@<RESET>
	291	(<RED>:<RESET>
	292	EOF
2b6a5417	293	word_diff --color-words=.
2b6a5417 JS	294	'
2b6a5417 JS	295
882749a0	296	test_expect_success '--word-diff=none' '
5094d158 JN	297	echo "(:" >pre &&
5094d158 JN	298	echo "(" >post &&
0253e126	299	pre=$(git rev-parse --short $(git hash-object pre)) &&
	300	post=$(git rev-parse --short $(git hash-object post)) &&
	301	cat >expect <<-EOF &&
5094d158	302	diff --git a/pre b/post
0253e126	303	index $pre..$post 100644
5094d158 JN	304	--- a/pre
	305	+++ b/post
	306	@@ -1 +1 @@
	307	-(:
	308	+(
	309	EOF
882749a0	310	word_diff --word-diff=plain --word-diff=none
882749a0 TR	311	'
882749a0 TR	312
62d39359 JS	313	test_expect_success 'unset default driver' '
	314	test_unconfig diff.wordregex
	315	'
	316
e90d065e	317	test_language_driver ada
5094d158 JN	318	test_language_driver bibtex
	319	test_language_driver cpp
	320	test_language_driver csharp
0719f3ee	321	test_language_driver css
3c81760b	322	test_language_driver dts
5094d158 JN	323	test_language_driver fortran
	324	test_language_driver html
	325	test_language_driver java
53b10a14	326	test_language_driver matlab
5094d158 JN	327	test_language_driver objc
5094d158 JN	328	test_language_driver pascal
5269edf1	329	test_language_driver perl
5094d158 JN	330	test_language_driver php
	331	test_language_driver python
	332	test_language_driver ruby
a4373903	333	test_language_driver scheme
5094d158	334	test_language_driver tex
8d96e728	335
42536dd9	336	test_expect_success 'word-diff with diff.sbe' '
42536dd9 JM	337	cat >pre <<-\EOF &&
	338	a
	339
	340	b
	341	EOF
	342	cat >post <<-\EOF &&
	343	a
	344
	345	c
	346	EOF
0253e126	347	pre=$(git rev-parse --short $(git hash-object pre)) &&
	348	post=$(git rev-parse --short $(git hash-object post)) &&
	349	cat >expect <<-EOF &&
	350	diff --git a/pre b/post
	351	index $pre..$post 100644
	352	--- a/pre
	353	+++ b/post
	354	@@ -1,3 +1,3 @@
	355	a
	356
	357	[-b-]{+c+}
	358	EOF
ff73aa40	359	test_config diff.suppress-blank-empty true &&
42536dd9 JM	360	word_diff --word-diff=plain
	361	'
	362
c7c2bc0a	363	test_expect_success 'word-diff with no newline at EOF' '
0253e126	364	printf "%s" "a a a a a" >pre &&
	365	printf "%s" "a a ab a a" >post &&
	366	pre=$(git rev-parse --short $(git hash-object pre)) &&
	367	post=$(git rev-parse --short $(git hash-object post)) &&
	368	cat >expect <<-EOF &&
c7c2bc0a	369	diff --git a/pre b/post
0253e126	370	index $pre..$post 100644
c7c2bc0a TR	371	--- a/pre
	372	+++ b/post
	373	@@ -1 +1 @@
	374	a a [-a-]{+ab+} a a
	375	EOF
c7c2bc0a TR	376	word_diff --word-diff=plain
	377	'
	378
62d39359 JS	379	test_expect_success 'setup history with two files' '
	380	echo "a b; c" >a.tex &&
	381	echo "a b; c" >z.txt &&
	382	git add a.tex z.txt &&
	383	git commit -minitial &&
	384
	385	# modify both
	386	echo "a bx; c" >a.tex &&
	387	echo "a bx; c" >z.txt &&
	388	git commit -mmodified -a
	389	'
	390
6440d341	391	test_expect_success 'wordRegex for the first file does not apply to the second' '
62d39359	392	echo "*.tex diff=tex" >.gitattributes &&
ff73aa40	393	test_config diff.tex.wordRegex "[a-z]+\|." &&
62d39359 JS	394	cat >expect <<-\EOF &&
	395	diff --git a/a.tex b/a.tex
	396	--- a/a.tex
	397	+++ b/a.tex
	398	@@ -1 +1 @@
	399	a [-b-]{+bx+}; c
	400	diff --git a/z.txt b/z.txt
	401	--- a/z.txt
	402	+++ b/z.txt
	403	@@ -1 +1 @@
	404	a [-b;-]{+bx;+} c
	405	EOF
	406	git diff --word-diff HEAD~ >actual &&
	407	compare_diff_patch expect actual
	408	'
	409
2e5d2003	410	test_done